/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-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 05:06:21,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 05:06:21,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 05:06:21,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 05:06:21,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 05:06:21,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 05:06:21,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 05:06:21,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 05:06:21,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 05:06:21,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 05:06:21,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 05:06:21,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 05:06:21,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 05:06:21,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 05:06:21,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 05:06:21,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 05:06:21,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 05:06:21,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 05:06:21,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 05:06:21,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 05:06:21,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 05:06:21,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 05:06:21,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 05:06:21,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 05:06:21,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 05:06:21,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 05:06:21,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 05:06:21,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 05:06:21,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 05:06:21,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 05:06:21,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 05:06:21,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 05:06:21,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 05:06:21,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 05:06:21,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 05:06:21,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 05:06:21,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 05:06:21,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 05:06:21,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 05:06:21,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 05:06:21,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 05:06:21,987 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 05:06:22,007 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 05:06:22,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 05:06:22,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 05:06:22,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 05:06:22,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 05:06:22,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 05:06:22,008 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 05:06:22,009 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 05:06:22,009 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 05:06:22,009 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 05:06:22,009 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 05:06:22,009 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 05:06:22,009 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 05:06:22,010 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 05:06:22,010 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 05:06:22,010 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 05:06:22,010 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 05:06:22,010 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 05:06:22,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 05:06:22,010 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 05:06:22,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 05:06:22,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 05:06:22,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 05:06:22,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 05:06:22,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 05:06:22,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 05:06:22,011 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 05:06:22,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 05:06:22,011 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 05:06:22,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 05:06:22,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 05:06:22,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 05:06:22,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 05:06:22,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 05:06:22,012 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 05:06:22,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 05:06:22,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 05:06:22,012 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 05:06:22,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 05:06:22,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 05:06:22,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 05:06:22,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 05:06:22,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 05:06:22,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 05:06:22,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 05:06:22,221 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 05:06:22,222 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 05:06:22,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2023-04-03 05:06:23,343 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 05:06:23,626 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 05:06:23,627 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2023-04-03 05:06:23,644 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/170583930/5b0b88f770f047009a6a0c45511874c4/FLAGe3f27a5c4 [2023-04-03 05:06:23,654 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/170583930/5b0b88f770f047009a6a0c45511874c4 [2023-04-03 05:06:23,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 05:06:23,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 05:06:23,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 05:06:23,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 05:06:23,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 05:06:23,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 05:06:23" (1/1) ... [2023-04-03 05:06:23,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9a0f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:23, skipping insertion in model container [2023-04-03 05:06:23,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 05:06:23" (1/1) ... [2023-04-03 05:06:23,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 05:06:23,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 05:06:24,031 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-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i[95017,95030] [2023-04-03 05:06:24,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 05:06:24,308 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 05:06:24,390 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-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i[95017,95030] [2023-04-03 05:06:24,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 05:06:24,536 INFO L208 MainTranslator]: Completed translation [2023-04-03 05:06:24,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24 WrapperNode [2023-04-03 05:06:24,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 05:06:24,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 05:06:24,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 05:06:24,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 05:06:24,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24" (1/1) ... [2023-04-03 05:06:24,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24" (1/1) ... [2023-04-03 05:06:24,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24" (1/1) ... [2023-04-03 05:06:24,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24" (1/1) ... [2023-04-03 05:06:24,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24" (1/1) ... [2023-04-03 05:06:24,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24" (1/1) ... [2023-04-03 05:06:24,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24" (1/1) ... [2023-04-03 05:06:24,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24" (1/1) ... [2023-04-03 05:06:24,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 05:06:24,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 05:06:24,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 05:06:24,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 05:06:24,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24" (1/1) ... [2023-04-03 05:06:24,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 05:06:24,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 05:06:24,715 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 05:06:24,721 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 05:06:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 05:06:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 05:06:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 05:06:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 05:06:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-03 05:06:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-03 05:06:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kzalloc_1 [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-04-03 05:06:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure qcprobe [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure qc_release [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure qcinit [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure qcexit [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2023-04-03 05:06:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_3 [2023-04-03 05:06:24,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_4 [2023-04-03 05:06:24,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_5 [2023-04-03 05:06:24,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_6 [2023-04-03 05:06:24,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_7 [2023-04-03 05:06:24,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_8 [2023-04-03 05:06:24,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_9 [2023-04-03 05:06:24,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_10 [2023-04-03 05:06:24,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_11 [2023-04-03 05:06:24,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_12 [2023-04-03 05:06:24,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2023-04-03 05:06:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc [2023-04-03 05:06:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-04-03 05:06:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-03 05:06:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-04-03 05:06:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-03 05:06:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-03 05:06:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_2 [2023-04-03 05:06:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-03 05:06:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-04-03 05:06:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_enable_autosuspend [2023-04-03 05:06:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-04-03 05:06:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-04-03 05:06:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2023-04-03 05:06:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_release [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_startup [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2023-04-03 05:06:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2023-04-03 05:06:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-03 05:06:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-03 05:06:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-03 05:06:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 05:06:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 05:06:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-03 05:06:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-03 05:06:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 05:06:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 05:06:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-03 05:06:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-03 05:06:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 05:06:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-03 05:06:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-03 05:06:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 05:06:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-03 05:06:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 05:06:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-03 05:06:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_4 [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_6 [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_8 [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_10 [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_11 [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_12 [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kzalloc_1 [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2023-04-03 05:06:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2023-04-03 05:06:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-03 05:06:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-04-03 05:06:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 05:06:24,759 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2023-04-03 05:06:24,759 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-04-03 05:06:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2023-04-03 05:06:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2023-04-03 05:06:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure usb_enable_autosuspend [2023-04-03 05:06:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-04-03 05:06:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2023-04-03 05:06:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2023-04-03 05:06:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-04-03 05:06:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2023-04-03 05:06:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-04-03 05:06:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_3 [2023-04-03 05:06:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_5 [2023-04-03 05:06:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_7 [2023-04-03 05:06:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_9 [2023-04-03 05:06:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_startup [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_release [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure qcprobe [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-03 05:06:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure qc_release [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure qcinit [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure qcexit [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_2 [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 05:06:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-03 05:06:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 05:06:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 05:06:25,080 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 05:06:25,082 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 05:06:25,400 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-03 05:06:26,129 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 05:06:26,263 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 05:06:26,263 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 05:06:26,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 05:06:26 BoogieIcfgContainer [2023-04-03 05:06:26,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 05:06:26,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 05:06:26,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 05:06:26,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 05:06:26,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 05:06:23" (1/3) ... [2023-04-03 05:06:26,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0fca9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 05:06:26, skipping insertion in model container [2023-04-03 05:06:26,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:06:24" (2/3) ... [2023-04-03 05:06:26,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0fca9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 05:06:26, skipping insertion in model container [2023-04-03 05:06:26,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 05:06:26" (3/3) ... [2023-04-03 05:06:26,276 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2023-04-03 05:06:26,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 05:06:26,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 05:06:26,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 05:06:26,389 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;@17c5c812, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 05:06:26,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 05:06:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 509 states, 304 states have (on average 1.3421052631578947) internal successors, (408), 318 states have internal predecessors, (408), 132 states have call successors, (132), 71 states have call predecessors, (132), 70 states have return successors, (127), 124 states have call predecessors, (127), 127 states have call successors, (127) [2023-04-03 05:06:26,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-03 05:06:26,421 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:06:26,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-04-03 05:06:26,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:06:26,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:06:26,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1801981970, now seen corresponding path program 1 times [2023-04-03 05:06:26,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:06:26,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862954543] [2023-04-03 05:06:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:26,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:06:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-03 05:06:26,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:06:26,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862954543] [2023-04-03 05:06:26,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862954543] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:06:26,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:06:26,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 05:06:26,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722229636] [2023-04-03 05:06:26,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:06:26,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 05:06:26,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:06:27,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 05:06:27,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:06:27,035 INFO L87 Difference]: Start difference. First operand has 509 states, 304 states have (on average 1.3421052631578947) internal successors, (408), 318 states have internal predecessors, (408), 132 states have call successors, (132), 71 states have call predecessors, (132), 70 states have return successors, (127), 124 states have call predecessors, (127), 127 states have call successors, (127) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-03 05:06:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:06:27,288 INFO L93 Difference]: Finished difference Result 1412 states and 1871 transitions. [2023-04-03 05:06:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 05:06:27,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2023-04-03 05:06:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:06:27,302 INFO L225 Difference]: With dead ends: 1412 [2023-04-03 05:06:27,302 INFO L226 Difference]: Without dead ends: 908 [2023-04-03 05:06:27,306 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 05:06:27,308 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 593 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 05:06:27,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1151 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 05:06:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2023-04-03 05:06:27,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2023-04-03 05:06:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 558 states have (on average 1.3333333333333333) internal successors, (744), 571 states have internal predecessors, (744), 228 states have call successors, (228), 124 states have call predecessors, (228), 121 states have return successors, (225), 219 states have call predecessors, (225), 225 states have call successors, (225) [2023-04-03 05:06:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1197 transitions. [2023-04-03 05:06:27,379 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1197 transitions. Word has length 60 [2023-04-03 05:06:27,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:06:27,380 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1197 transitions. [2023-04-03 05:06:27,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-03 05:06:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1197 transitions. [2023-04-03 05:06:27,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-03 05:06:27,385 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:06:27,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-04-03 05:06:27,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 05:06:27,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:06:27,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:06:27,386 INFO L85 PathProgramCache]: Analyzing trace with hash -38933035, now seen corresponding path program 1 times [2023-04-03 05:06:27,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:06:27,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109348276] [2023-04-03 05:06:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:27,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:06:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-03 05:06:27,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:06:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109348276] [2023-04-03 05:06:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109348276] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:06:27,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:06:27,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 05:06:27,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418948439] [2023-04-03 05:06:27,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:06:27,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 05:06:27,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:06:27,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 05:06:27,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:06:27,707 INFO L87 Difference]: Start difference. First operand 908 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 05:06:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:06:27,903 INFO L93 Difference]: Finished difference Result 1759 states and 2354 transitions. [2023-04-03 05:06:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 05:06:27,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 58 [2023-04-03 05:06:27,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:06:27,914 INFO L225 Difference]: With dead ends: 1759 [2023-04-03 05:06:27,914 INFO L226 Difference]: Without dead ends: 1740 [2023-04-03 05:06:27,914 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 05:06:27,918 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 592 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 05:06:27,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1177 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 05:06:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2023-04-03 05:06:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1658. [2023-04-03 05:06:27,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1050 states have (on average 1.3514285714285714) internal successors, (1419), 1068 states have internal predecessors, (1419), 394 states have call successors, (394), 218 states have call predecessors, (394), 213 states have return successors, (395), 381 states have call predecessors, (395), 391 states have call successors, (395) [2023-04-03 05:06:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2208 transitions. [2023-04-03 05:06:27,990 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2208 transitions. Word has length 58 [2023-04-03 05:06:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:06:27,991 INFO L495 AbstractCegarLoop]: Abstraction has 1658 states and 2208 transitions. [2023-04-03 05:06:27,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 05:06:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2208 transitions. [2023-04-03 05:06:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 05:06:27,993 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:06:27,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 05:06:27,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 05:06:27,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:06:27,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:06:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1189477817, now seen corresponding path program 1 times [2023-04-03 05:06:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:06:27,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126098935] [2023-04-03 05:06:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:27,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:06:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-03 05:06:28,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:06:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126098935] [2023-04-03 05:06:28,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126098935] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:06:28,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:06:28,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 05:06:28,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384874029] [2023-04-03 05:06:28,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:06:28,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 05:06:28,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:06:28,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 05:06:28,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:06:28,139 INFO L87 Difference]: Start difference. First operand 1658 states and 2208 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 05:06:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:06:28,364 INFO L93 Difference]: Finished difference Result 3620 states and 4804 transitions. [2023-04-03 05:06:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 05:06:28,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 96 [2023-04-03 05:06:28,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:06:28,371 INFO L225 Difference]: With dead ends: 3620 [2023-04-03 05:06:28,371 INFO L226 Difference]: Without dead ends: 1983 [2023-04-03 05:06:28,375 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 05:06:28,375 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 160 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 05:06:28,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1067 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 05:06:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2023-04-03 05:06:28,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1964. [2023-04-03 05:06:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1267 states have (on average 1.3567482241515392) internal successors, (1719), 1285 states have internal predecessors, (1719), 440 states have call successors, (440), 261 states have call predecessors, (440), 256 states have return successors, (441), 427 states have call predecessors, (441), 437 states have call successors, (441) [2023-04-03 05:06:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2600 transitions. [2023-04-03 05:06:28,484 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2600 transitions. Word has length 96 [2023-04-03 05:06:28,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:06:28,484 INFO L495 AbstractCegarLoop]: Abstraction has 1964 states and 2600 transitions. [2023-04-03 05:06:28,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 05:06:28,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2600 transitions. [2023-04-03 05:06:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 05:06:28,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:06:28,488 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-04-03 05:06:28,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 05:06:28,488 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:06:28,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:06:28,488 INFO L85 PathProgramCache]: Analyzing trace with hash 767675706, now seen corresponding path program 1 times [2023-04-03 05:06:28,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:06:28,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045753152] [2023-04-03 05:06:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:28,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:06:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-04-03 05:06:28,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:06:28,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045753152] [2023-04-03 05:06:28,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045753152] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:06:28,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:06:28,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 05:06:28,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825743860] [2023-04-03 05:06:28,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:06:28,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 05:06:28,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:06:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 05:06:28,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:06:28,707 INFO L87 Difference]: Start difference. First operand 1964 states and 2600 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-03 05:06:28,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:06:28,973 INFO L93 Difference]: Finished difference Result 4416 states and 5912 transitions. [2023-04-03 05:06:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 05:06:28,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 138 [2023-04-03 05:06:28,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:06:28,981 INFO L225 Difference]: With dead ends: 4416 [2023-04-03 05:06:28,981 INFO L226 Difference]: Without dead ends: 2485 [2023-04-03 05:06:28,984 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 05:06:28,985 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 466 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 05:06:28,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 905 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 05:06:28,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2023-04-03 05:06:29,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2432. [2023-04-03 05:06:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 1649 states have (on average 1.3493026076409946) internal successors, (2225), 1665 states have internal predecessors, (2225), 474 states have call successors, (474), 311 states have call predecessors, (474), 308 states have return successors, (475), 465 states have call predecessors, (475), 471 states have call successors, (475) [2023-04-03 05:06:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3174 transitions. [2023-04-03 05:06:29,048 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3174 transitions. Word has length 138 [2023-04-03 05:06:29,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:06:29,049 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3174 transitions. [2023-04-03 05:06:29,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-03 05:06:29,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3174 transitions. [2023-04-03 05:06:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-03 05:06:29,052 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:06:29,052 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-04-03 05:06:29,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 05:06:29,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:06:29,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:06:29,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1457521459, now seen corresponding path program 1 times [2023-04-03 05:06:29,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:06:29,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275606010] [2023-04-03 05:06:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:29,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:06:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-03 05:06:30,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:06:30,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275606010] [2023-04-03 05:06:30,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275606010] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:06:30,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:06:30,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 05:06:30,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135056098] [2023-04-03 05:06:30,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:06:30,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 05:06:30,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:06:30,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 05:06:30,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-03 05:06:30,043 INFO L87 Difference]: Start difference. First operand 2432 states and 3174 transitions. Second operand has 11 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (24), 6 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-03 05:06:30,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:06:30,436 INFO L93 Difference]: Finished difference Result 3769 states and 4905 transitions. [2023-04-03 05:06:30,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 05:06:30,437 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (24), 6 states have call predecessors, (24), 2 states have call successors, (24) Word has length 144 [2023-04-03 05:06:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:06:30,446 INFO L225 Difference]: With dead ends: 3769 [2023-04-03 05:06:30,446 INFO L226 Difference]: Without dead ends: 2480 [2023-04-03 05:06:30,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-03 05:06:30,451 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 2 mSDsluCounter, 5167 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5742 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 05:06:30,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5742 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 05:06:30,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2023-04-03 05:06:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2476. [2023-04-03 05:06:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 1675 states have (on average 1.3438805970149255) internal successors, (2251), 1693 states have internal predecessors, (2251), 474 states have call successors, (474), 311 states have call predecessors, (474), 326 states have return successors, (493), 481 states have call predecessors, (493), 471 states have call successors, (493) [2023-04-03 05:06:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3218 transitions. [2023-04-03 05:06:30,530 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3218 transitions. Word has length 144 [2023-04-03 05:06:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:06:30,530 INFO L495 AbstractCegarLoop]: Abstraction has 2476 states and 3218 transitions. [2023-04-03 05:06:30,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (24), 6 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-03 05:06:30,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3218 transitions. [2023-04-03 05:06:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-03 05:06:30,535 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:06:30,535 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-04-03 05:06:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 05:06:30,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:06:30,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:06:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1495512221, now seen corresponding path program 1 times [2023-04-03 05:06:30,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:06:30,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871016345] [2023-04-03 05:06:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:30,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:06:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-03 05:06:30,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:06:30,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871016345] [2023-04-03 05:06:30,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871016345] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 05:06:30,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123490652] [2023-04-03 05:06:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:30,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 05:06:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 05:06:30,939 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 05:06:30,945 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 05:06:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:31,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 3032 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-03 05:06:31,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 05:06:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-04-03 05:06:31,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 05:06:31,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123490652] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:06:31,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 05:06:31,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-04-03 05:06:31,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497028395] [2023-04-03 05:06:31,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:06:31,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 05:06:31,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:06:31,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 05:06:31,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 05:06:31,460 INFO L87 Difference]: Start difference. First operand 2476 states and 3218 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-03 05:06:31,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:06:31,803 INFO L93 Difference]: Finished difference Result 5286 states and 6803 transitions. [2023-04-03 05:06:31,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 05:06:31,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 148 [2023-04-03 05:06:31,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:06:31,812 INFO L225 Difference]: With dead ends: 5286 [2023-04-03 05:06:31,812 INFO L226 Difference]: Without dead ends: 2822 [2023-04-03 05:06:31,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 05:06:31,816 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 590 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 3831 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 05:06:31,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 3831 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 05:06:31,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2023-04-03 05:06:31,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2574. [2023-04-03 05:06:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 1729 states have (on average 1.3342972816657028) internal successors, (2307), 1752 states have internal predecessors, (2307), 494 states have call successors, (494), 331 states have call predecessors, (494), 350 states have return successors, (517), 500 states have call predecessors, (517), 491 states have call successors, (517) [2023-04-03 05:06:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 3318 transitions. [2023-04-03 05:06:31,890 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 3318 transitions. Word has length 148 [2023-04-03 05:06:31,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:06:31,891 INFO L495 AbstractCegarLoop]: Abstraction has 2574 states and 3318 transitions. [2023-04-03 05:06:31,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-03 05:06:31,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 3318 transitions. [2023-04-03 05:06:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-03 05:06:31,894 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:06:31,894 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-04-03 05:06:31,911 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 05:06:32,104 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,SelfDestructingSolverStorable5 [2023-04-03 05:06:32,104 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:06:32,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:06:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2118712795, now seen corresponding path program 1 times [2023-04-03 05:06:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:06:32,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311262903] [2023-04-03 05:06:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:32,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:06:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-03 05:06:32,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:06:32,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311262903] [2023-04-03 05:06:32,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311262903] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 05:06:32,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408207292] [2023-04-03 05:06:32,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:32,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 05:06:32,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 05:06:32,463 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 05:06:32,464 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 05:06:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:32,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-03 05:06:32,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 05:06:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-03 05:06:32,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 05:06:32,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408207292] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:06:32,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 05:06:32,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-04-03 05:06:32,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835508082] [2023-04-03 05:06:32,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:06:32,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 05:06:32,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:06:32,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 05:06:32,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 05:06:32,961 INFO L87 Difference]: Start difference. First operand 2574 states and 3318 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, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-03 05:06:33,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:06:33,191 INFO L93 Difference]: Finished difference Result 5123 states and 6609 transitions. [2023-04-03 05:06:33,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 05:06:33,192 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, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 171 [2023-04-03 05:06:33,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:06:33,199 INFO L225 Difference]: With dead ends: 5123 [2023-04-03 05:06:33,200 INFO L226 Difference]: Without dead ends: 2575 [2023-04-03 05:06:33,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-03 05:06:33,204 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 05:06:33,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1725 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 05:06:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2023-04-03 05:06:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2575. [2023-04-03 05:06:33,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2575 states, 1730 states have (on average 1.3341040462427747) internal successors, (2308), 1753 states have internal predecessors, (2308), 494 states have call successors, (494), 331 states have call predecessors, (494), 350 states have return successors, (517), 500 states have call predecessors, (517), 491 states have call successors, (517) [2023-04-03 05:06:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3319 transitions. [2023-04-03 05:06:33,279 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3319 transitions. Word has length 171 [2023-04-03 05:06:33,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:06:33,280 INFO L495 AbstractCegarLoop]: Abstraction has 2575 states and 3319 transitions. [2023-04-03 05:06:33,280 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, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-03 05:06:33,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3319 transitions. [2023-04-03 05:06:33,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-04-03 05:06:33,284 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:06:33,284 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-04-03 05:06:33,309 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 05:06:33,494 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,SelfDestructingSolverStorable6 [2023-04-03 05:06:33,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:06:33,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:06:33,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1268066525, now seen corresponding path program 1 times [2023-04-03 05:06:33,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:06:33,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139613160] [2023-04-03 05:06:33,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:33,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:06:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-04-03 05:06:33,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:06:33,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139613160] [2023-04-03 05:06:33,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139613160] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 05:06:33,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068696961] [2023-04-03 05:06:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:33,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 05:06:33,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 05:06:33,977 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 05:06:33,978 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 05:06:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:34,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 3244 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-03 05:06:34,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 05:06:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-04-03 05:06:34,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 05:06:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-04-03 05:06:34,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068696961] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 05:06:34,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1615392897] [2023-04-03 05:06:34,723 INFO L159 IcfgInterpreter]: Started Sifa with 138 locations of interest [2023-04-03 05:06:34,723 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 05:06:34,726 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 05:06:34,729 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 05:06:34,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 05:07:00,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 139 for LOIs [2023-04-03 05:07:10,138 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 163 for LOIs [2023-04-03 05:08:53,430 WARN L223 SmtUtils]: Spent 1.64m on a formula simplification. DAG size of input: 13498 DAG size of output: 275 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 05:10:34,765 WARN L223 SmtUtils]: Spent 1.65m on a formula simplification. DAG size of input: 13472 DAG size of output: 321 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)