/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 04:43:06,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 04:43:06,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 04:43:06,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 04:43:06,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 04:43:06,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 04:43:06,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 04:43:06,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 04:43:06,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 04:43:06,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 04:43:06,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 04:43:06,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 04:43:06,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 04:43:06,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 04:43:06,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 04:43:06,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 04:43:06,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 04:43:06,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 04:43:06,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 04:43:06,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 04:43:06,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 04:43:06,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 04:43:06,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 04:43:06,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 04:43:06,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 04:43:06,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 04:43:06,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 04:43:06,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 04:43:06,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 04:43:06,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 04:43:06,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 04:43:06,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 04:43:06,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 04:43:06,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 04:43:06,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 04:43:06,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 04:43:06,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 04:43:06,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 04:43:06,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 04:43:06,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 04:43:06,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 04:43:06,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 04:43:06,380 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 04:43:06,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 04:43:06,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 04:43:06,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 04:43:06,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 04:43:06,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 04:43:06,382 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 04:43:06,382 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 04:43:06,382 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 04:43:06,382 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 04:43:06,383 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 04:43:06,383 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 04:43:06,383 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 04:43:06,383 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 04:43:06,383 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 04:43:06,383 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 04:43:06,384 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 04:43:06,384 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 04:43:06,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 04:43:06,385 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 04:43:06,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 04:43:06,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 04:43:06,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 04:43:06,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 04:43:06,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 04:43:06,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 04:43:06,386 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 04:43:06,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 04:43:06,386 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 04:43:06,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 04:43:06,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 04:43:06,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 04:43:06,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 04:43:06,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 04:43:06,387 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 04:43:06,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 04:43:06,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 04:43:06,387 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 04:43:06,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 04:43:06,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 04:43:06,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 04:43:06,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 04:43:06,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 04:43:06,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 04:43:06,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 04:43:06,619 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 04:43:06,620 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 04:43:06,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2023-04-03 04:43:07,781 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 04:43:08,251 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 04:43:08,252 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2023-04-03 04:43:08,286 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42befefc/2fa1dc767e0b43a1acef6686a35941ec/FLAGe5a7b7205 [2023-04-03 04:43:08,300 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42befefc/2fa1dc767e0b43a1acef6686a35941ec [2023-04-03 04:43:08,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 04:43:08,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 04:43:08,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 04:43:08,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 04:43:08,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 04:43:08,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 04:43:08" (1/1) ... [2023-04-03 04:43:08,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c840ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:08, skipping insertion in model container [2023-04-03 04:43:08,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 04:43:08" (1/1) ... [2023-04-03 04:43:08,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 04:43:08,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 04:43:09,527 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i[202214,202227] [2023-04-03 04:43:10,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 04:43:10,201 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 04:43:10,344 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i[202214,202227] [2023-04-03 04:43:10,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 04:43:10,622 WARN L667 CHandler]: The function __VERIFIER_nondet_u8 is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 04:43:10,628 INFO L208 MainTranslator]: Completed translation [2023-04-03 04:43:10,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10 WrapperNode [2023-04-03 04:43:10,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 04:43:10,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 04:43:10,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 04:43:10,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 04:43:10,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10" (1/1) ... [2023-04-03 04:43:10,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10" (1/1) ... [2023-04-03 04:43:10,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10" (1/1) ... [2023-04-03 04:43:10,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10" (1/1) ... [2023-04-03 04:43:10,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10" (1/1) ... [2023-04-03 04:43:10,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10" (1/1) ... [2023-04-03 04:43:10,916 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10" (1/1) ... [2023-04-03 04:43:10,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10" (1/1) ... [2023-04-03 04:43:10,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 04:43:10,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 04:43:10,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 04:43:10,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 04:43:10,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10" (1/1) ... [2023-04-03 04:43:10,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 04:43:10,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:43:10,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 04:43:11,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 04:43:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 04:43:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 04:43:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-04-03 04:43:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 04:43:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2023-04-03 04:43:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-04-03 04:43:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2023-04-03 04:43:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-04-03 04:43:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-03 04:43:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pm_wakeup_card_complete [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_recv [2023-04-03 04:43:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_rx_complete [2023-04-03 04:43:11,033 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_tx_complete [2023-04-03 04:43:11,033 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_submit_rx_urb [2023-04-03 04:43:11,033 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_free [2023-04-03 04:43:11,033 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_probe [2023-04-03 04:43:11,033 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_suspend [2023-04-03 04:43:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_resume [2023-04-03 04:43:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_disconnect [2023-04-03 04:43:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_tx_init [2023-04-03 04:43:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_rx_init [2023-04-03 04:43:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_sync [2023-04-03 04:43:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_data_sync [2023-04-03 04:43:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_host_to_card [2023-04-03 04:43:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_register_dev [2023-04-03 04:43:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_unregister_dev [2023-04-03 04:43:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_prog_fw_w_helper [2023-04-03 04:43:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_dnld_fw [2023-04-03 04:43:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_submit_rx_urb [2023-04-03 04:43:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_cmd_event_complete [2023-04-03 04:43:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_data_complete [2023-04-03 04:43:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pm_wakeup_card [2023-04-03 04:43:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_init_module [2023-04-03 04:43:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_cleanup_module [2023-04-03 04:43:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_mwifiex_if_ops_1 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_4 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_5 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_6 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_7 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_dev_9 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_10 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_dev_14 [2023-04-03 04:43:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_15 [2023-04-03 04:43:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_16 [2023-04-03 04:43:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_17 [2023-04-03 04:43:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_18 [2023-04-03 04:43:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_20 [2023-04-03 04:43:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_22 [2023-04-03 04:43:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_23 [2023-04-03 04:43:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-04-03 04:43:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2023-04-03 04:43:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2023-04-03 04:43:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2023-04-03 04:43:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-04-03 04:43:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-04-03 04:43:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2023-04-03 04:43:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2023-04-03 04:43:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-04-03 04:43:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2023-04-03 04:43:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2023-04-03 04:43:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2023-04-03 04:43:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2023-04-03 04:43:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2023-04-03 04:43:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure down_interruptible [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_2 [2023-04-03 04:43:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_add_card [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_cancel_hs [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_deauthenticate [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_enable_hs [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_init_shutdown_fw [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_process_hs_config [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_process_sleep_confirm_resp [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_remove_card [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_complete [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-04-03 04:43:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2023-04-03 04:43:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-03 04:43:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-04-03 04:43:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2023-04-03 04:43:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2023-04-03 04:43:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-04-03 04:43:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-04-03 04:43:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2023-04-03 04:43:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2023-04-03 04:43:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-04-03 04:43:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-04-03 04:43:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_disable_autosuspend [2023-04-03 04:43:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-04-03 04:43:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-04-03 04:43:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2023-04-03 04:43:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-04-03 04:43:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-03 04:43:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-03 04:43:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-03 04:43:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-03 04:43:11,053 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 04:43:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2023-04-03 04:43:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure down_interruptible [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure up [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_10 [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_dev_9 [2023-04-03 04:43:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_dev_14 [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure usb_disable_autosuspend [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_22 [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_23 [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_15 [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_16 [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_17 [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_18 [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_4 [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_5 [2023-04-03 04:43:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_6 [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_7 [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_20 [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2023-04-03 04:43:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 04:43:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_mwifiex_if_ops_1 [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-04-03 04:43:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_complete [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_process_sleep_confirm_resp [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_process_hs_config [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_deauthenticate [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_init_shutdown_fw [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_add_card [2023-04-03 04:43:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_remove_card [2023-04-03 04:43:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_cancel_hs [2023-04-03 04:43:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_enable_hs [2023-04-03 04:43:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pm_wakeup_card_complete [2023-04-03 04:43:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_submit_rx_urb [2023-04-03 04:43:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_recv [2023-04-03 04:43:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_rx_complete [2023-04-03 04:43:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_tx_complete [2023-04-03 04:43:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_free [2023-04-03 04:43:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_probe [2023-04-03 04:43:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_suspend [2023-04-03 04:43:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_resume [2023-04-03 04:43:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_disconnect [2023-04-03 04:43:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_tx_init [2023-04-03 04:43:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_rx_init [2023-04-03 04:43:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_sync [2023-04-03 04:43:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_data_sync [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_host_to_card [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_register_dev [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_unregister_dev [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_prog_fw_w_helper [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_dnld_fw [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_submit_rx_urb [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_cmd_event_complete [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_data_complete [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pm_wakeup_card [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_init_module [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_cleanup_module [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_2 [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 04:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-03 04:43:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-03 04:43:11,658 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 04:43:11,661 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 04:43:11,904 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-03 04:43:13,138 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-04-03 04:43:16,240 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 04:43:16,627 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 04:43:16,627 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 04:43:16,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 04:43:16 BoogieIcfgContainer [2023-04-03 04:43:16,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 04:43:16,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 04:43:16,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 04:43:16,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 04:43:16,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 04:43:08" (1/3) ... [2023-04-03 04:43:16,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f256a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 04:43:16, skipping insertion in model container [2023-04-03 04:43:16,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:43:10" (2/3) ... [2023-04-03 04:43:16,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f256a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 04:43:16, skipping insertion in model container [2023-04-03 04:43:16,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 04:43:16" (3/3) ... [2023-04-03 04:43:16,638 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2023-04-03 04:43:16,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 04:43:16,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 04:43:16,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 04:43:16,740 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41d41da4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 04:43:16,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 04:43:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 1128 states, 685 states have (on average 1.3124087591240876) internal successors, (899), 717 states have internal predecessors, (899), 313 states have call successors, (313), 125 states have call predecessors, (313), 123 states have return successors, (305), 296 states have call predecessors, (305), 305 states have call successors, (305) [2023-04-03 04:43:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-03 04:43:16,762 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:16,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:16,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:16,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1966067404, now seen corresponding path program 1 times [2023-04-03 04:43:16,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:16,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461155355] [2023-04-03 04:43:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:16,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-03 04:43:17,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:17,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461155355] [2023-04-03 04:43:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461155355] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:43:17,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:43:17,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:43:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840036244] [2023-04-03 04:43:17,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:17,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:43:17,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:17,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:43:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:17,421 INFO L87 Difference]: Start difference. First operand has 1128 states, 685 states have (on average 1.3124087591240876) internal successors, (899), 717 states have internal predecessors, (899), 313 states have call successors, (313), 125 states have call predecessors, (313), 123 states have return successors, (305), 296 states have call predecessors, (305), 305 states have call successors, (305) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-03 04:43:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:43:18,919 INFO L93 Difference]: Finished difference Result 3193 states and 4340 transitions. [2023-04-03 04:43:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:43:18,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 59 [2023-04-03 04:43:18,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:43:18,960 INFO L225 Difference]: With dead ends: 3193 [2023-04-03 04:43:18,960 INFO L226 Difference]: Without dead ends: 2075 [2023-04-03 04:43:18,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:18,979 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 1386 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 04:43:18,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 2684 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 04:43:18,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-04-03 04:43:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2023-04-03 04:43:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1279 states have (on average 1.3049257232212665) internal successors, (1669), 1316 states have internal predecessors, (1669), 572 states have call successors, (572), 226 states have call predecessors, (572), 223 states have return successors, (565), 547 states have call predecessors, (565), 565 states have call successors, (565) [2023-04-03 04:43:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2806 transitions. [2023-04-03 04:43:19,165 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2806 transitions. Word has length 59 [2023-04-03 04:43:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:43:19,165 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2806 transitions. [2023-04-03 04:43:19,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-03 04:43:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2806 transitions. [2023-04-03 04:43:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 04:43:19,178 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:19,178 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:19,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 04:43:19,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:19,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1250688434, now seen corresponding path program 1 times [2023-04-03 04:43:19,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:19,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014236273] [2023-04-03 04:43:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:19,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-03 04:43:20,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014236273] [2023-04-03 04:43:20,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014236273] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:43:20,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:43:20,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:43:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284751068] [2023-04-03 04:43:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:20,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:43:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:20,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:43:20,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:20,096 INFO L87 Difference]: Start difference. First operand 2075 states and 2806 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-04-03 04:43:21,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:43:21,159 INFO L93 Difference]: Finished difference Result 4022 states and 5445 transitions. [2023-04-03 04:43:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:43:21,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 84 [2023-04-03 04:43:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:43:21,182 INFO L225 Difference]: With dead ends: 4022 [2023-04-03 04:43:21,182 INFO L226 Difference]: Without dead ends: 4019 [2023-04-03 04:43:21,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:21,186 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 1369 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 04:43:21,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 2705 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 04:43:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-04-03 04:43:21,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 4007. [2023-04-03 04:43:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 2474 states have (on average 1.305578011317704) internal successors, (3230), 2546 states have internal predecessors, (3230), 1102 states have call successors, (1102), 440 states have call predecessors, (1102), 430 states have return successors, (1096), 1050 states have call predecessors, (1096), 1094 states have call successors, (1096) [2023-04-03 04:43:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5428 transitions. [2023-04-03 04:43:21,364 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5428 transitions. Word has length 84 [2023-04-03 04:43:21,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:43:21,366 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 5428 transitions. [2023-04-03 04:43:21,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-04-03 04:43:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5428 transitions. [2023-04-03 04:43:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 04:43:21,369 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:21,369 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 04:43:21,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:21,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash 115998397, now seen corresponding path program 1 times [2023-04-03 04:43:21,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:21,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034647050] [2023-04-03 04:43:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-03 04:43:22,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:22,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034647050] [2023-04-03 04:43:22,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034647050] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:43:22,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:43:22,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:43:22,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091493817] [2023-04-03 04:43:22,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:22,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:43:22,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:22,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:43:22,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:22,012 INFO L87 Difference]: Start difference. First operand 4007 states and 5428 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-04-03 04:43:23,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:43:23,080 INFO L93 Difference]: Finished difference Result 11968 states and 16247 transitions. [2023-04-03 04:43:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:43:23,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 85 [2023-04-03 04:43:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:43:23,139 INFO L225 Difference]: With dead ends: 11968 [2023-04-03 04:43:23,139 INFO L226 Difference]: Without dead ends: 7977 [2023-04-03 04:43:23,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:23,162 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 1440 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 04:43:23,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 2667 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 04:43:23,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7977 states. [2023-04-03 04:43:23,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7977 to 7964. [2023-04-03 04:43:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7964 states, 4921 states have (on average 1.305832147937411) internal successors, (6426), 5065 states have internal predecessors, (6426), 2192 states have call successors, (2192), 876 states have call predecessors, (2192), 850 states have return successors, (2190), 2082 states have call predecessors, (2190), 2182 states have call successors, (2190) [2023-04-03 04:43:23,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7964 states to 7964 states and 10808 transitions. [2023-04-03 04:43:23,583 INFO L78 Accepts]: Start accepts. Automaton has 7964 states and 10808 transitions. Word has length 85 [2023-04-03 04:43:23,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:43:23,585 INFO L495 AbstractCegarLoop]: Abstraction has 7964 states and 10808 transitions. [2023-04-03 04:43:23,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-04-03 04:43:23,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7964 states and 10808 transitions. [2023-04-03 04:43:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 04:43:23,589 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:23,589 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:23,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 04:43:23,589 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:23,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:23,590 INFO L85 PathProgramCache]: Analyzing trace with hash -699649515, now seen corresponding path program 1 times [2023-04-03 04:43:23,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:23,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794174786] [2023-04-03 04:43:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:23,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-03 04:43:23,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:23,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794174786] [2023-04-03 04:43:23,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794174786] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:43:23,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:43:23,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:43:23,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999305892] [2023-04-03 04:43:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:23,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:43:23,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:43:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:23,852 INFO L87 Difference]: Start difference. First operand 7964 states and 10808 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-04-03 04:43:25,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:43:25,187 INFO L93 Difference]: Finished difference Result 11912 states and 16274 transitions. [2023-04-03 04:43:25,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:43:25,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 86 [2023-04-03 04:43:25,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:43:25,274 INFO L225 Difference]: With dead ends: 11912 [2023-04-03 04:43:25,275 INFO L226 Difference]: Without dead ends: 11909 [2023-04-03 04:43:25,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:25,288 INFO L413 NwaCegarLoop]: 1344 mSDtfsCounter, 1431 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 04:43:25,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 2680 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 04:43:25,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11909 states. [2023-04-03 04:43:25,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11909 to 11882. [2023-04-03 04:43:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11882 states, 7349 states have (on average 1.3067083957000953) internal successors, (9603), 7569 states have internal predecessors, (9603), 3270 states have call successors, (3270), 1304 states have call predecessors, (3270), 1262 states have return successors, (3364), 3098 states have call predecessors, (3364), 3258 states have call successors, (3364) [2023-04-03 04:43:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11882 states to 11882 states and 16237 transitions. [2023-04-03 04:43:26,024 INFO L78 Accepts]: Start accepts. Automaton has 11882 states and 16237 transitions. Word has length 86 [2023-04-03 04:43:26,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:43:26,024 INFO L495 AbstractCegarLoop]: Abstraction has 11882 states and 16237 transitions. [2023-04-03 04:43:26,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-04-03 04:43:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 11882 states and 16237 transitions. [2023-04-03 04:43:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 04:43:26,028 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:26,028 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:26,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 04:43:26,029 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:26,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:26,029 INFO L85 PathProgramCache]: Analyzing trace with hash -214926144, now seen corresponding path program 1 times [2023-04-03 04:43:26,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:26,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644105241] [2023-04-03 04:43:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:26,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-03 04:43:26,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644105241] [2023-04-03 04:43:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644105241] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:43:26,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:43:26,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:43:26,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258186531] [2023-04-03 04:43:26,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:26,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:43:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:43:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:26,232 INFO L87 Difference]: Start difference. First operand 11882 states and 16237 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-04-03 04:43:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:43:27,063 INFO L93 Difference]: Finished difference Result 11884 states and 16238 transitions. [2023-04-03 04:43:27,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:43:27,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 87 [2023-04-03 04:43:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:43:27,118 INFO L225 Difference]: With dead ends: 11884 [2023-04-03 04:43:27,118 INFO L226 Difference]: Without dead ends: 11881 [2023-04-03 04:43:27,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:27,129 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 1446 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 04:43:27,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 1343 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 04:43:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11881 states. [2023-04-03 04:43:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11881 to 11881. [2023-04-03 04:43:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11881 states, 7349 states have (on average 1.3065723227650021) internal successors, (9602), 7568 states have internal predecessors, (9602), 3269 states have call successors, (3269), 1304 states have call predecessors, (3269), 1262 states have return successors, (3364), 3098 states have call predecessors, (3364), 3258 states have call successors, (3364) [2023-04-03 04:43:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11881 states to 11881 states and 16235 transitions. [2023-04-03 04:43:27,827 INFO L78 Accepts]: Start accepts. Automaton has 11881 states and 16235 transitions. Word has length 87 [2023-04-03 04:43:27,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:43:27,828 INFO L495 AbstractCegarLoop]: Abstraction has 11881 states and 16235 transitions. [2023-04-03 04:43:27,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-04-03 04:43:27,828 INFO L276 IsEmpty]: Start isEmpty. Operand 11881 states and 16235 transitions. [2023-04-03 04:43:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-03 04:43:27,835 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:27,835 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:27,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 04:43:27,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:27,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1926601336, now seen corresponding path program 1 times [2023-04-03 04:43:27,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:27,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207256479] [2023-04-03 04:43:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:27,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-03 04:43:28,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207256479] [2023-04-03 04:43:28,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207256479] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:43:28,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:43:28,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:43:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513338255] [2023-04-03 04:43:28,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:28,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:43:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:43:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:28,023 INFO L87 Difference]: Start difference. First operand 11881 states and 16235 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-04-03 04:43:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:43:28,981 INFO L93 Difference]: Finished difference Result 11883 states and 16236 transitions. [2023-04-03 04:43:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:43:28,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 88 [2023-04-03 04:43:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:43:29,032 INFO L225 Difference]: With dead ends: 11883 [2023-04-03 04:43:29,032 INFO L226 Difference]: Without dead ends: 11848 [2023-04-03 04:43:29,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:29,042 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1443 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 04:43:29,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 1342 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 04:43:29,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2023-04-03 04:43:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 11848. [2023-04-03 04:43:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11848 states, 7328 states have (on average 1.306359170305677) internal successors, (9573), 7547 states have internal predecessors, (9573), 3262 states have call successors, (3262), 1299 states have call predecessors, (3262), 1257 states have return successors, (3357), 3091 states have call predecessors, (3357), 3253 states have call successors, (3357) [2023-04-03 04:43:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 16192 transitions. [2023-04-03 04:43:29,827 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 16192 transitions. Word has length 88 [2023-04-03 04:43:29,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:43:29,828 INFO L495 AbstractCegarLoop]: Abstraction has 11848 states and 16192 transitions. [2023-04-03 04:43:29,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-04-03 04:43:29,828 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 16192 transitions. [2023-04-03 04:43:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-04-03 04:43:29,838 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:29,838 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:29,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 04:43:29,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:29,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1280673974, now seen corresponding path program 1 times [2023-04-03 04:43:29,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:29,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445495414] [2023-04-03 04:43:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:29,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-03 04:43:30,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:30,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445495414] [2023-04-03 04:43:30,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445495414] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:43:30,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:43:30,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:43:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432128734] [2023-04-03 04:43:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:30,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:43:30,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:30,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:43:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:30,022 INFO L87 Difference]: Start difference. First operand 11848 states and 16192 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-04-03 04:43:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:43:31,431 INFO L93 Difference]: Finished difference Result 32381 states and 44005 transitions. [2023-04-03 04:43:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:43:31,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 130 [2023-04-03 04:43:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:43:31,524 INFO L225 Difference]: With dead ends: 32381 [2023-04-03 04:43:31,524 INFO L226 Difference]: Without dead ends: 20549 [2023-04-03 04:43:31,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:31,579 INFO L413 NwaCegarLoop]: 1482 mSDtfsCounter, 1056 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 04:43:31,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 2773 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 04:43:31,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20549 states. [2023-04-03 04:43:32,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20549 to 20526. [2023-04-03 04:43:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20526 states, 12639 states have (on average 1.2992325342194795) internal successors, (16421), 13050 states have internal predecessors, (16421), 5611 states have call successors, (5611), 2334 states have call predecessors, (5611), 2275 states have return successors, (5764), 5309 states have call predecessors, (5764), 5602 states have call successors, (5764) [2023-04-03 04:43:32,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20526 states to 20526 states and 27796 transitions. [2023-04-03 04:43:32,864 INFO L78 Accepts]: Start accepts. Automaton has 20526 states and 27796 transitions. Word has length 130 [2023-04-03 04:43:32,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:43:32,864 INFO L495 AbstractCegarLoop]: Abstraction has 20526 states and 27796 transitions. [2023-04-03 04:43:32,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-04-03 04:43:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 20526 states and 27796 transitions. [2023-04-03 04:43:32,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-04-03 04:43:32,879 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:32,879 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:32,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 04:43:32,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:32,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:32,880 INFO L85 PathProgramCache]: Analyzing trace with hash 801491567, now seen corresponding path program 1 times [2023-04-03 04:43:32,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:32,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222470437] [2023-04-03 04:43:32,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:32,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-04-03 04:43:33,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:33,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222470437] [2023-04-03 04:43:33,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222470437] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:43:33,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:43:33,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 04:43:33,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960402174] [2023-04-03 04:43:33,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:33,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 04:43:33,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:33,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 04:43:33,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 04:43:33,217 INFO L87 Difference]: Start difference. First operand 20526 states and 27796 transitions. Second operand has 6 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2023-04-03 04:43:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:43:35,564 INFO L93 Difference]: Finished difference Result 33544 states and 45265 transitions. [2023-04-03 04:43:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 04:43:35,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 169 [2023-04-03 04:43:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:43:35,626 INFO L225 Difference]: With dead ends: 33544 [2023-04-03 04:43:35,627 INFO L226 Difference]: Without dead ends: 13031 [2023-04-03 04:43:35,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-03 04:43:35,703 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 13 mSDsluCounter, 5341 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6679 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-03 04:43:35,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6679 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-03 04:43:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13031 states. [2023-04-03 04:43:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13031 to 12812. [2023-04-03 04:43:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12812 states, 7858 states have (on average 1.2940951896156783) internal successors, (10169), 8124 states have internal predecessors, (10169), 3476 states have call successors, (3476), 1508 states have call predecessors, (3476), 1477 states have return successors, (3571), 3287 states have call predecessors, (3571), 3467 states have call successors, (3571) [2023-04-03 04:43:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12812 states to 12812 states and 17216 transitions. [2023-04-03 04:43:36,576 INFO L78 Accepts]: Start accepts. Automaton has 12812 states and 17216 transitions. Word has length 169 [2023-04-03 04:43:36,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:43:36,576 INFO L495 AbstractCegarLoop]: Abstraction has 12812 states and 17216 transitions. [2023-04-03 04:43:36,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2023-04-03 04:43:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 12812 states and 17216 transitions. [2023-04-03 04:43:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-04-03 04:43:36,589 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:36,589 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:36,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 04:43:36,589 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:36,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:36,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1862083514, now seen corresponding path program 1 times [2023-04-03 04:43:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:36,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261544624] [2023-04-03 04:43:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:36,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-04-03 04:43:36,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:36,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261544624] [2023-04-03 04:43:36,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261544624] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:43:36,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:43:36,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:43:36,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833119639] [2023-04-03 04:43:36,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:36,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:43:36,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:36,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:43:36,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:36,799 INFO L87 Difference]: Start difference. First operand 12812 states and 17216 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-03 04:43:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:43:38,431 INFO L93 Difference]: Finished difference Result 31443 states and 42123 transitions. [2023-04-03 04:43:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:43:38,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 172 [2023-04-03 04:43:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:43:38,532 INFO L225 Difference]: With dead ends: 31443 [2023-04-03 04:43:38,532 INFO L226 Difference]: Without dead ends: 18588 [2023-04-03 04:43:38,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:43:38,584 INFO L413 NwaCegarLoop]: 1855 mSDtfsCounter, 1135 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 04:43:38,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 3155 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 04:43:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18588 states. [2023-04-03 04:43:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18588 to 18136. [2023-04-03 04:43:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18136 states, 11142 states have (on average 1.2960868784778317) internal successors, (14441), 11539 states have internal predecessors, (14441), 4874 states have call successors, (4874), 2177 states have call predecessors, (4874), 2119 states have return successors, (5019), 4563 states have call predecessors, (5019), 4865 states have call successors, (5019) [2023-04-03 04:43:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18136 states to 18136 states and 24334 transitions. [2023-04-03 04:43:39,531 INFO L78 Accepts]: Start accepts. Automaton has 18136 states and 24334 transitions. Word has length 172 [2023-04-03 04:43:39,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:43:39,531 INFO L495 AbstractCegarLoop]: Abstraction has 18136 states and 24334 transitions. [2023-04-03 04:43:39,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-03 04:43:39,531 INFO L276 IsEmpty]: Start isEmpty. Operand 18136 states and 24334 transitions. [2023-04-03 04:43:39,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-03 04:43:39,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:39,550 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:39,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 04:43:39,550 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:39,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:39,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1160535889, now seen corresponding path program 1 times [2023-04-03 04:43:39,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:39,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896119804] [2023-04-03 04:43:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:39,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-04-03 04:43:40,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:40,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896119804] [2023-04-03 04:43:40,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896119804] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:43:40,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:43:40,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 04:43:40,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611773121] [2023-04-03 04:43:40,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:40,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 04:43:40,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 04:43:40,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 04:43:40,181 INFO L87 Difference]: Start difference. First operand 18136 states and 24334 transitions. Second operand has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-03 04:43:42,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:43:42,268 INFO L93 Difference]: Finished difference Result 36270 states and 48674 transitions. [2023-04-03 04:43:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 04:43:42,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 170 [2023-04-03 04:43:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:43:42,354 INFO L225 Difference]: With dead ends: 36270 [2023-04-03 04:43:42,354 INFO L226 Difference]: Without dead ends: 18161 [2023-04-03 04:43:42,415 INFO L412 NwaCegarLoop]: 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 [2023-04-03 04:43:42,415 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 5 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4009 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 04:43:42,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4009 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 04:43:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18161 states. [2023-04-03 04:43:43,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18161 to 18137. [2023-04-03 04:43:43,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18137 states, 11143 states have (on average 1.296060306919142) internal successors, (14442), 11540 states have internal predecessors, (14442), 4874 states have call successors, (4874), 2177 states have call predecessors, (4874), 2119 states have return successors, (5019), 4563 states have call predecessors, (5019), 4865 states have call successors, (5019) [2023-04-03 04:43:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18137 states to 18137 states and 24335 transitions. [2023-04-03 04:43:43,417 INFO L78 Accepts]: Start accepts. Automaton has 18137 states and 24335 transitions. Word has length 170 [2023-04-03 04:43:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:43:43,417 INFO L495 AbstractCegarLoop]: Abstraction has 18137 states and 24335 transitions. [2023-04-03 04:43:43,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-03 04:43:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 18137 states and 24335 transitions. [2023-04-03 04:43:43,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-03 04:43:43,427 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:43:43,427 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:43:43,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 04:43:43,428 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:43:43,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:43:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1429993195, now seen corresponding path program 1 times [2023-04-03 04:43:43,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:43:43,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892506131] [2023-04-03 04:43:43,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:43,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:43:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-04-03 04:43:44,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:43:44,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892506131] [2023-04-03 04:43:44,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892506131] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:43:44,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637928584] [2023-04-03 04:43:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:43:44,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:43:44,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:43:44,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 04:43:44,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 04:43:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:43:45,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 77 conjunts are in the unsatisfiable core [2023-04-03 04:43:45,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:43:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-04-03 04:43:45,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 04:43:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 04:43:47,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637928584] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-03 04:43:47,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-03 04:43:47,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 9] total 17 [2023-04-03 04:43:47,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522207939] [2023-04-03 04:43:47,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:43:47,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 04:43:47,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:43:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 04:43:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-04-03 04:43:47,187 INFO L87 Difference]: Start difference. First operand 18137 states and 24335 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 5 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-03 04:43:49,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:43:51,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:43:55,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:43:57,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:43:59,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:44:05,709 INFO L93 Difference]: Finished difference Result 27856 states and 37708 transitions. [2023-04-03 04:44:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 04:44:05,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 5 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 171 [2023-04-03 04:44:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:44:05,815 INFO L225 Difference]: With dead ends: 27856 [2023-04-03 04:44:05,815 INFO L226 Difference]: Without dead ends: 27697 [2023-04-03 04:44:05,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-04-03 04:44:05,838 INFO L413 NwaCegarLoop]: 1348 mSDtfsCounter, 2306 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 4202 mSolverCounterSat, 189 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 4202 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-04-03 04:44:05,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2555 Valid, 3484 Invalid, 4396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [189 Valid, 4202 Invalid, 5 Unknown, 0 Unchecked, 16.8s Time] [2023-04-03 04:44:05,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27697 states. [2023-04-03 04:44:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27697 to 27635. [2023-04-03 04:44:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27635 states, 16971 states have (on average 1.2954451711743562) internal successors, (21985), 17585 states have internal predecessors, (21985), 7418 states have call successors, (7418), 3262 states have call predecessors, (7418), 3245 states have return successors, (7949), 7003 states have call predecessors, (7949), 7409 states have call successors, (7949) [2023-04-03 04:44:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27635 states to 27635 states and 37352 transitions. [2023-04-03 04:44:07,684 INFO L78 Accepts]: Start accepts. Automaton has 27635 states and 37352 transitions. Word has length 171 [2023-04-03 04:44:07,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:44:07,686 INFO L495 AbstractCegarLoop]: Abstraction has 27635 states and 37352 transitions. [2023-04-03 04:44:07,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 5 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-03 04:44:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 27635 states and 37352 transitions. [2023-04-03 04:44:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-04-03 04:44:07,702 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:44:07,702 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:44:07,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-03 04:44:07,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-03 04:44:07,929 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:44:07,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:44:07,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1520456512, now seen corresponding path program 1 times [2023-04-03 04:44:07,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:44:07,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587587986] [2023-04-03 04:44:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:44:07,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:44:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:44:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-04-03 04:44:08,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:44:08,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587587986] [2023-04-03 04:44:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587587986] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:44:08,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943877685] [2023-04-03 04:44:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:44:08,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:44:08,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:44:08,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 04:44:08,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-03 04:44:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:44:12,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 114 conjunts are in the unsatisfiable core [2023-04-03 04:44:12,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:44:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 04:44:13,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 04:44:13,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943877685] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:44:13,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 04:44:13,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 20 [2023-04-03 04:44:13,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391576649] [2023-04-03 04:44:13,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:44:13,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-03 04:44:13,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:44:13,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-03 04:44:13,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-04-03 04:44:13,899 INFO L87 Difference]: Start difference. First operand 27635 states and 37352 transitions. Second operand has 17 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 7 states have call successors, (33), 5 states have call predecessors, (33), 9 states have return successors, (30), 9 states have call predecessors, (30), 6 states have call successors, (30) [2023-04-03 04:44:16,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:18,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:20,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:22,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:24,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:26,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:28,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:30,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:32,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:34,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:36,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:38,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:43,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:45,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:47,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:49,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:51,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:53,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:55,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:57,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:44:59,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:01,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:03,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:05,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:07,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:09,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:11,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:28,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:31,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:33,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:35,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:37,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:39,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:41,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:43,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:45,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:47,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:49,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:51,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:53,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 04:45:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:45:57,973 INFO L93 Difference]: Finished difference Result 47095 states and 64021 transitions. [2023-04-03 04:45:57,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-03 04:45:57,974 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 7 states have call successors, (33), 5 states have call predecessors, (33), 9 states have return successors, (30), 9 states have call predecessors, (30), 6 states have call successors, (30) Word has length 175 [2023-04-03 04:45:57,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:45:58,118 INFO L225 Difference]: With dead ends: 47095 [2023-04-03 04:45:58,118 INFO L226 Difference]: Without dead ends: 46780 [2023-04-03 04:45:58,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=1140, Unknown=0, NotChecked=0, Total=1332 [2023-04-03 04:45:58,139 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 4220 mSDsluCounter, 6234 mSDsCounter, 0 mSdLazyCounter, 16050 mSolverCounterSat, 2006 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 6810 SdHoareTripleChecker+Invalid, 18096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2006 IncrementalHoareTripleChecker+Valid, 16050 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.7s IncrementalHoareTripleChecker+Time [2023-04-03 04:45:58,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 6810 Invalid, 18096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2006 Valid, 16050 Invalid, 40 Unknown, 0 Unchecked, 100.7s Time] [2023-04-03 04:45:58,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46780 states. [2023-04-03 04:46:01,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46780 to 46023. [2023-04-03 04:46:01,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46023 states, 28261 states have (on average 1.2943986412370405) internal successors, (36581), 29355 states have internal predecessors, (36581), 12350 states have call successors, (12350), 5408 states have call predecessors, (12350), 5411 states have return successors, (13437), 11623 states have call predecessors, (13437), 12341 states have call successors, (13437) [2023-04-03 04:46:01,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46023 states to 46023 states and 62368 transitions. [2023-04-03 04:46:01,797 INFO L78 Accepts]: Start accepts. Automaton has 46023 states and 62368 transitions. Word has length 175 [2023-04-03 04:46:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:46:01,798 INFO L495 AbstractCegarLoop]: Abstraction has 46023 states and 62368 transitions. [2023-04-03 04:46:01,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 7 states have call successors, (33), 5 states have call predecessors, (33), 9 states have return successors, (30), 9 states have call predecessors, (30), 6 states have call successors, (30) [2023-04-03 04:46:01,798 INFO L276 IsEmpty]: Start isEmpty. Operand 46023 states and 62368 transitions. [2023-04-03 04:46:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-04-03 04:46:01,826 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:46:01,826 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:46:01,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-03 04:46:02,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-03 04:46:02,042 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:46:02,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:46:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1267540172, now seen corresponding path program 1 times [2023-04-03 04:46:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:46:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417607347] [2023-04-03 04:46:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:46:02,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:46:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:46:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-04-03 04:46:02,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:46:02,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417607347] [2023-04-03 04:46:02,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417607347] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:46:02,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193939221] [2023-04-03 04:46:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:46:02,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:46:02,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:46:02,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 04:46:02,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-03 04:46:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:46:04,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 3106 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-03 04:46:04,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:46:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-04-03 04:46:04,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 04:46:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-04-03 04:46:04,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193939221] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 04:46:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1577474557] [2023-04-03 04:46:04,961 INFO L159 IcfgInterpreter]: Started Sifa with 163 locations of interest [2023-04-03 04:46:04,961 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 04:46:04,965 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 04:46:04,969 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 04:46:04,969 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 04:46:13,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2023-04-03 04:46:16,223 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 201 for LOIs