/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 EqDomain -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 13:31:34,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 13:31:34,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 13:31:35,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 13:31:35,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 13:31:35,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 13:31:35,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 13:31:35,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 13:31:35,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 13:31:35,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 13:31:35,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 13:31:35,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 13:31:35,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 13:31:35,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 13:31:35,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 13:31:35,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 13:31:35,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 13:31:35,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 13:31:35,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 13:31:35,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 13:31:35,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 13:31:35,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 13:31:35,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 13:31:35,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 13:31:35,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 13:31:35,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 13:31:35,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 13:31:35,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 13:31:35,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 13:31:35,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 13:31:35,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 13:31:35,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 13:31:35,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 13:31:35,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 13:31:35,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 13:31:35,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 13:31:35,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 13:31:35,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 13:31:35,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 13:31:35,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 13:31:35,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 13:31:35,044 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 [2023-04-01 13:31:35,066 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 13:31:35,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 13:31:35,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 13:31:35,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 13:31:35,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 13:31:35,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 13:31:35,067 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 13:31:35,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 13:31:35,068 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 13:31:35,068 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 13:31:35,068 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 13:31:35,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 13:31:35,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 13:31:35,068 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 13:31:35,068 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 13:31:35,068 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 13:31:35,068 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 13:31:35,072 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 13:31:35,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 13:31:35,073 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 13:31:35,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 13:31:35,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 13:31:35,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 13:31:35,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 13:31:35,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 13:31:35,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 13:31:35,074 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 13:31:35,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 13:31:35,074 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 13:31:35,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 13:31:35,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 13:31:35,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 13:31:35,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 13:31:35,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 13:31:35,074 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 13:31:35,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 13:31:35,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 13:31:35,075 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 13:31:35,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 13:31:35,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 13:31:35,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 13:31:35,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 13:31:35,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 13:31:35,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 13:31:35,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 13:31:35,269 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 13:31:35,269 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 13:31:35,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2023-04-01 13:31:36,265 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 13:31:36,603 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 13:31:36,604 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2023-04-01 13:31:36,631 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ebc6301f/274d14b554e1442e9e63fbcb6e7b8080/FLAG9218ce8da [2023-04-01 13:31:36,642 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ebc6301f/274d14b554e1442e9e63fbcb6e7b8080 [2023-04-01 13:31:36,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 13:31:36,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 13:31:36,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 13:31:36,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 13:31:36,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 13:31:36,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:31:36" (1/1) ... [2023-04-01 13:31:36,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1abf3e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:36, skipping insertion in model container [2023-04-01 13:31:36,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:31:36" (1/1) ... [2023-04-01 13:31:36,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 13:31:36,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 13:31:37,059 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2023-04-01 13:31:37,060 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2023-04-01 13:31:37,347 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2023-04-01 13:31:37,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 13:31:37,906 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 13:31:37,954 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2023-04-01 13:31:37,954 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2023-04-01 13:31:37,964 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2023-04-01 13:31:38,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 13:31:38,130 INFO L208 MainTranslator]: Completed translation [2023-04-01 13:31:38,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38 WrapperNode [2023-04-01 13:31:38,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 13:31:38,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 13:31:38,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 13:31:38,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 13:31:38,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38" (1/1) ... [2023-04-01 13:31:38,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38" (1/1) ... [2023-04-01 13:31:38,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38" (1/1) ... [2023-04-01 13:31:38,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38" (1/1) ... [2023-04-01 13:31:38,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38" (1/1) ... [2023-04-01 13:31:38,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38" (1/1) ... [2023-04-01 13:31:38,367 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38" (1/1) ... [2023-04-01 13:31:38,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38" (1/1) ... [2023-04-01 13:31:38,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 13:31:38,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 13:31:38,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 13:31:38,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 13:31:38,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38" (1/1) ... [2023-04-01 13:31:38,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 13:31:38,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:31:38,486 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) [2023-04-01 13:31:38,490 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 [2023-04-01 13:31:38,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 13:31:38,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 13:31:38,523 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 13:31:38,523 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-04-01 13:31:38,523 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_1 [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_4 [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_5 [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_7 [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kmalloc_12 [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kcalloc_14 [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-01 13:31:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_virt [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-04-01 13:31:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-04-01 13:31:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-04-01 13:31:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-04-01 13:31:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure testdev_to_usbdev [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure get_endpoints [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_callback [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_alloc_urb [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_alloc_urb [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_fill_buf [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_offset [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure check_guard_bytes [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_check_buf [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_free_urb [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_io [2023-04-01 13:31:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure free_sglist [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_sglist [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure perform_sglist [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure get_altsetting [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure set_altsetting [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_config [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_ext [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_ss_cap [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_con_id [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ch9_postconfig [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_complete [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ctrl_queue [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1_callback [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1 [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_simple [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_queued_callback [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_queued [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_not_halted [2023-04-01 13:31:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_halted [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure test_halt [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure halt_simple [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_out [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_callback [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_alloc_urb [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure test_iso_queue [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure test_unaligned_bulk [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_ioctl [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_probe [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_suspend [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_resume [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_disconnect [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_init [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_exit [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 13:31:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_19 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_coherent_20 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_21 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_23 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_25 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_coherent_26 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_27 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2023-04-01 13:31:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_30 [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_coherent_31 [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_33 [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_34 [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-04-01 13:31:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __virt_addr_valid [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure completion_done [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-04-01 13:31:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_descriptor [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_status [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_speed_string [2023-04-01 13:31:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-04-01 13:31:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2023-04-01 13:31:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-04-01 13:31:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2023-04-01 13:31:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 13:31:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-01 13:31:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-01 13:31:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 13:31:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 13:31:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 13:31:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 13:31:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 13:31:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 13:31:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-01 13:31:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-04-01 13:31:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-04-01 13:31:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure __virt_addr_valid [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_1 [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-04-01 13:31:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_4 [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_5 [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_7 [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure completion_done [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2023-04-01 13:31:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kmalloc_12 [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kcalloc_14 [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 13:31:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure sg_virt [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2023-04-01 13:31:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure usb_speed_string [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_33 [2023-04-01 13:31:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_34 [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_19 [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_27 [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_30 [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_21 [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_23 [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_25 [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2023-04-01 13:31:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2023-04-01 13:31:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2023-04-01 13:31:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2023-04-01 13:31:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-04-01 13:31:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-04-01 13:31:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_coherent_20 [2023-04-01 13:31:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_coherent_26 [2023-04-01 13:31:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_coherent_31 [2023-04-01 13:31:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-04-01 13:31:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-04-01 13:31:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_descriptor [2023-04-01 13:31:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_status [2023-04-01 13:31:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-04-01 13:31:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-04-01 13:31:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2023-04-01 13:31:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2023-04-01 13:31:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-04-01 13:31:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure testdev_to_usbdev [2023-04-01 13:31:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure get_endpoints [2023-04-01 13:31:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure simple_callback [2023-04-01 13:31:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_alloc_urb [2023-04-01 13:31:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-01 13:31:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure simple_alloc_urb [2023-04-01 13:31:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure simple_fill_buf [2023-04-01 13:31:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_offset [2023-04-01 13:31:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure check_guard_bytes [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure simple_check_buf [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure simple_free_urb [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure simple_io [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure free_sglist [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_sglist [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure perform_sglist [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure get_altsetting [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure set_altsetting [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_config [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_ext [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_ss_cap [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_con_id [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure ch9_postconfig [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_complete [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure test_ctrl_queue [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1_callback [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1 [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_simple [2023-04-01 13:31:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_queued_callback [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_queued [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure verify_not_halted [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure verify_halted [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure test_halt [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure halt_simple [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_out [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure iso_callback [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure iso_alloc_urb [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure test_iso_queue [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure test_unaligned_bulk [2023-04-01 13:31:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_ioctl [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_probe [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_suspend [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_resume [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_disconnect [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_init [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_exit [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 13:31:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2023-04-01 13:31:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2023-04-01 13:31:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2023-04-01 13:31:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2023-04-01 13:31:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2023-04-01 13:31:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 13:31:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 13:31:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 13:31:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 13:31:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 13:31:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 13:31:39,072 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 13:31:39,075 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 13:31:39,493 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-01 13:31:41,668 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 13:31:42,422 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 13:31:42,422 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 13:31:42,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:31:42 BoogieIcfgContainer [2023-04-01 13:31:42,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 13:31:42,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 13:31:42,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 13:31:42,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 13:31:42,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 01:31:36" (1/3) ... [2023-04-01 13:31:42,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5860496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:31:42, skipping insertion in model container [2023-04-01 13:31:42,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:38" (2/3) ... [2023-04-01 13:31:42,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5860496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:31:42, skipping insertion in model container [2023-04-01 13:31:42,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:31:42" (3/3) ... [2023-04-01 13:31:42,433 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2023-04-01 13:31:42,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 13:31:42,448 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 13:31:42,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 13:31:42,519 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;@5846abf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 13:31:42,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 13:31:42,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 1611 states, 1001 states have (on average 1.3406593406593406) internal successors, (1342), 1019 states have internal predecessors, (1342), 448 states have call successors, (448), 151 states have call predecessors, (448), 150 states have return successors, (445), 442 states have call predecessors, (445), 445 states have call successors, (445) [2023-04-01 13:31:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-01 13:31:42,540 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:31:42,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:31:42,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:31:42,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:31:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1136973632, now seen corresponding path program 1 times [2023-04-01 13:31:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:31:42,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274933757] [2023-04-01 13:31:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:31:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:31:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:31:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 13:31:43,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:31:43,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274933757] [2023-04-01 13:31:43,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274933757] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:31:43,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:31:43,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:31:43,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771993428] [2023-04-01 13:31:43,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:31:43,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:31:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:31:43,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:31:43,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:31:43,069 INFO L87 Difference]: Start difference. First operand has 1611 states, 1001 states have (on average 1.3406593406593406) internal successors, (1342), 1019 states have internal predecessors, (1342), 448 states have call successors, (448), 151 states have call predecessors, (448), 150 states have return successors, (445), 442 states have call predecessors, (445), 445 states have call successors, (445) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 13:31:43,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:31:43,779 INFO L93 Difference]: Finished difference Result 3014 states and 4283 transitions. [2023-04-01 13:31:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:31:43,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2023-04-01 13:31:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:31:43,809 INFO L225 Difference]: With dead ends: 3014 [2023-04-01 13:31:43,810 INFO L226 Difference]: Without dead ends: 1500 [2023-04-01 13:31:43,821 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 [2023-04-01 13:31:43,825 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 89 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 3653 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 13:31:43,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 3653 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 13:31:43,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2023-04-01 13:31:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1488. [2023-04-01 13:31:43,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 934 states have (on average 1.3340471092077089) internal successors, (1246), 945 states have internal predecessors, (1246), 413 states have call successors, (413), 143 states have call predecessors, (413), 140 states have return successors, (411), 406 states have call predecessors, (411), 411 states have call successors, (411) [2023-04-01 13:31:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2070 transitions. [2023-04-01 13:31:43,946 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2070 transitions. Word has length 44 [2023-04-01 13:31:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:31:43,947 INFO L495 AbstractCegarLoop]: Abstraction has 1488 states and 2070 transitions. [2023-04-01 13:31:43,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 13:31:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2070 transitions. [2023-04-01 13:31:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-01 13:31:43,950 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:31:43,950 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:31:43,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 13:31:43,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:31:43,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:31:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1659886669, now seen corresponding path program 1 times [2023-04-01 13:31:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:31:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057975259] [2023-04-01 13:31:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:31:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:31:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:31:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 13:31:44,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:31:44,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057975259] [2023-04-01 13:31:44,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057975259] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:31:44,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:31:44,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 13:31:44,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470171308] [2023-04-01 13:31:44,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:31:44,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 13:31:44,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:31:44,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 13:31:44,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 13:31:44,317 INFO L87 Difference]: Start difference. First operand 1488 states and 2070 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 13:31:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:31:44,797 INFO L93 Difference]: Finished difference Result 1518 states and 2097 transitions. [2023-04-01 13:31:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 13:31:44,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 75 [2023-04-01 13:31:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:31:44,804 INFO L225 Difference]: With dead ends: 1518 [2023-04-01 13:31:44,804 INFO L226 Difference]: Without dead ends: 1515 [2023-04-01 13:31:44,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:31:44,805 INFO L413 NwaCegarLoop]: 1812 mSDtfsCounter, 1932 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 13:31:44,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1932 Valid, 3695 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 13:31:44,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2023-04-01 13:31:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1515. [2023-04-01 13:31:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 949 states have (on average 1.3298208640674394) internal successors, (1262), 960 states have internal predecessors, (1262), 417 states have call successors, (417), 151 states have call predecessors, (417), 148 states have return successors, (415), 410 states have call predecessors, (415), 415 states have call successors, (415) [2023-04-01 13:31:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2094 transitions. [2023-04-01 13:31:44,851 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2094 transitions. Word has length 75 [2023-04-01 13:31:44,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:31:44,851 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2094 transitions. [2023-04-01 13:31:44,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 13:31:44,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2094 transitions. [2023-04-01 13:31:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-01 13:31:44,860 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:31:44,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:31:44,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 13:31:44,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:31:44,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:31:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash 964471520, now seen corresponding path program 1 times [2023-04-01 13:31:44,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:31:44,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051059238] [2023-04-01 13:31:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:31:44,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:31:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:31:44,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:31:44,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051059238] [2023-04-01 13:31:44,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-01 13:31:44,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190986372] [2023-04-01 13:31:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:31:44,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:31:44,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:31:44,951 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) [2023-04-01 13:31:44,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 13:31:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:31:45,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 13:31:45,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:31:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 13:31:45,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 13:31:45,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190986372] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:31:45,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:31:45,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:31:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032490317] [2023-04-01 13:31:45,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:31:45,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:31:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:31:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:31:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:31:45,791 INFO L87 Difference]: Start difference. First operand 1515 states and 2094 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-04-01 13:31:46,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:31:46,281 INFO L93 Difference]: Finished difference Result 3099 states and 4272 transitions. [2023-04-01 13:31:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:31:46,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 194 [2023-04-01 13:31:46,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:31:46,289 INFO L225 Difference]: With dead ends: 3099 [2023-04-01 13:31:46,289 INFO L226 Difference]: Without dead ends: 1613 [2023-04-01 13:31:46,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:31:46,294 INFO L413 NwaCegarLoop]: 1811 mSDtfsCounter, 275 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 13:31:46,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 3434 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 13:31:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2023-04-01 13:31:46,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1595. [2023-04-01 13:31:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1005 states have (on average 1.32636815920398) internal successors, (1333), 1016 states have internal predecessors, (1333), 425 states have call successors, (425), 167 states have call predecessors, (425), 164 states have return successors, (423), 418 states have call predecessors, (423), 423 states have call successors, (423) [2023-04-01 13:31:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2181 transitions. [2023-04-01 13:31:46,345 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2181 transitions. Word has length 194 [2023-04-01 13:31:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:31:46,345 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2181 transitions. [2023-04-01 13:31:46,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-04-01 13:31:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2181 transitions. [2023-04-01 13:31:46,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-04-01 13:31:46,351 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:31:46,351 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:31:46,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 13:31:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:31:46,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:31:46,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:31:46,562 INFO L85 PathProgramCache]: Analyzing trace with hash 851396660, now seen corresponding path program 1 times [2023-04-01 13:31:46,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:31:46,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665673270] [2023-04-01 13:31:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:31:46,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:31:46,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 13:31:46,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698635906] [2023-04-01 13:31:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:31:46,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:31:46,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:31:46,627 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) [2023-04-01 13:31:46,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 13:31:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:31:47,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 3082 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 13:31:47,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:31:47,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-04-01 13:31:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-04-01 13:31:47,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 13:31:47,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:31:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665673270] [2023-04-01 13:31:47,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 13:31:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698635906] [2023-04-01 13:31:47,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698635906] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:31:47,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:31:47,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 13:31:47,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337446285] [2023-04-01 13:31:47,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:31:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 13:31:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:31:47,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 13:31:47,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 13:31:47,518 INFO L87 Difference]: Start difference. First operand 1595 states and 2181 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 4 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-04-01 13:31:50,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 13:31:53,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 13:31:56,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 13:31:58,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 13:32:00,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 13:32:02,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 13:32:04,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 13:32:06,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 13:32:08,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:32:08,716 INFO L93 Difference]: Finished difference Result 4127 states and 5748 transitions. [2023-04-01 13:32:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 13:32:08,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 4 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 213 [2023-04-01 13:32:08,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:32:08,728 INFO L225 Difference]: With dead ends: 4127 [2023-04-01 13:32:08,728 INFO L226 Difference]: Without dead ends: 2561 [2023-04-01 13:32:08,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 203 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-01 13:32:08,733 INFO L413 NwaCegarLoop]: 1770 mSDtfsCounter, 1237 mSDsluCounter, 5800 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 29 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 7570 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2023-04-01 13:32:08,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 7570 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3028 Invalid, 8 Unknown, 0 Unchecked, 20.9s Time] [2023-04-01 13:32:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2023-04-01 13:32:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2509. [2023-04-01 13:32:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 1602 states have (on average 1.3383270911360798) internal successors, (2144), 1623 states have internal predecessors, (2144), 653 states have call successors, (653), 260 states have call predecessors, (653), 253 states have return successors, (698), 634 states have call predecessors, (698), 651 states have call successors, (698) [2023-04-01 13:32:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3495 transitions. [2023-04-01 13:32:08,821 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3495 transitions. Word has length 213 [2023-04-01 13:32:08,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:32:08,822 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 3495 transitions. [2023-04-01 13:32:08,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 4 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-04-01 13:32:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3495 transitions. [2023-04-01 13:32:08,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-04-01 13:32:08,832 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:32:08,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:32:08,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 13:32:09,045 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,SelfDestructingSolverStorable3 [2023-04-01 13:32:09,046 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:32:09,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:32:09,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1584278178, now seen corresponding path program 1 times [2023-04-01 13:32:09,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:32:09,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862396235] [2023-04-01 13:32:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:32:09,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:32:09,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 13:32:09,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370282766] [2023-04-01 13:32:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:32:09,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:32:09,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:32:09,112 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) [2023-04-01 13:32:09,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 13:32:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:32:09,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 13:32:09,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:32:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 13:32:09,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 13:32:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-01 13:32:10,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:32:10,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862396235] [2023-04-01 13:32:10,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 13:32:10,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370282766] [2023-04-01 13:32:10,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370282766] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 13:32:10,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 13:32:10,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-04-01 13:32:10,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702076859] [2023-04-01 13:32:10,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:32:10,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:32:10,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:32:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:32:10,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:32:10,060 INFO L87 Difference]: Start difference. First operand 2509 states and 3495 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-04-01 13:32:10,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:32:10,838 INFO L93 Difference]: Finished difference Result 7110 states and 9959 transitions. [2023-04-01 13:32:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:32:10,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 209 [2023-04-01 13:32:10,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:32:10,860 INFO L225 Difference]: With dead ends: 7110 [2023-04-01 13:32:10,860 INFO L226 Difference]: Without dead ends: 4633 [2023-04-01 13:32:10,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:32:10,870 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 1984 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 13:32:10,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1984 Valid, 3418 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 13:32:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2023-04-01 13:32:11,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 4612. [2023-04-01 13:32:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 2932 states have (on average 1.340381991814461) internal successors, (3930), 2972 states have internal predecessors, (3930), 1227 states have call successors, (1227), 465 states have call predecessors, (1227), 452 states have return successors, (1311), 1192 states have call predecessors, (1311), 1225 states have call successors, (1311) [2023-04-01 13:32:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 6468 transitions. [2023-04-01 13:32:11,041 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 6468 transitions. Word has length 209 [2023-04-01 13:32:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:32:11,041 INFO L495 AbstractCegarLoop]: Abstraction has 4612 states and 6468 transitions. [2023-04-01 13:32:11,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-04-01 13:32:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 6468 transitions. [2023-04-01 13:32:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-04-01 13:32:11,057 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:32:11,057 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:32:11,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 13:32:11,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:32:11,270 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:32:11,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:32:11,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1709283956, now seen corresponding path program 1 times [2023-04-01 13:32:11,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:32:11,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468999047] [2023-04-01 13:32:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:32:11,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:32:11,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 13:32:11,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813023628] [2023-04-01 13:32:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:32:11,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:32:11,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:32:11,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:32:11,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 13:32:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:32:11,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 3080 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 13:32:11,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:32:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 13:32:12,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 13:32:12,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:32:12,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468999047] [2023-04-01 13:32:12,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 13:32:12,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813023628] [2023-04-01 13:32:12,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813023628] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:32:12,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:32:12,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 13:32:12,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979521845] [2023-04-01 13:32:12,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:32:12,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 13:32:12,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:32:12,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 13:32:12,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:32:12,039 INFO L87 Difference]: Start difference. First operand 4612 states and 6468 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2023-04-01 13:32:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:32:13,002 INFO L93 Difference]: Finished difference Result 9292 states and 13048 transitions. [2023-04-01 13:32:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 13:32:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 210 [2023-04-01 13:32:13,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:32:13,022 INFO L225 Difference]: With dead ends: 9292 [2023-04-01 13:32:13,023 INFO L226 Difference]: Without dead ends: 4712 [2023-04-01 13:32:13,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:32:13,038 INFO L413 NwaCegarLoop]: 1856 mSDtfsCounter, 245 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 5381 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 13:32:13,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 5381 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 13:32:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2023-04-01 13:32:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 4618. [2023-04-01 13:32:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4618 states, 2936 states have (on average 1.3385558583106267) internal successors, (3930), 2976 states have internal predecessors, (3930), 1227 states have call successors, (1227), 465 states have call predecessors, (1227), 454 states have return successors, (1313), 1194 states have call predecessors, (1313), 1225 states have call successors, (1313) [2023-04-01 13:32:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 6470 transitions. [2023-04-01 13:32:13,225 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 6470 transitions. Word has length 210 [2023-04-01 13:32:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:32:13,225 INFO L495 AbstractCegarLoop]: Abstraction has 4618 states and 6470 transitions. [2023-04-01 13:32:13,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2023-04-01 13:32:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 6470 transitions. [2023-04-01 13:32:13,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-04-01 13:32:13,240 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:32:13,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:32:13,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 13:32:13,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:32:13,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:32:13,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:32:13,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1886235187, now seen corresponding path program 1 times [2023-04-01 13:32:13,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:32:13,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175605323] [2023-04-01 13:32:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:32:13,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:32:13,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 13:32:13,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152572025] [2023-04-01 13:32:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:32:13,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:32:13,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:32:13,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:32:13,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 13:32:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:32:14,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 3205 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 13:32:14,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:32:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 13:32:14,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 13:32:14,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:32:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175605323] [2023-04-01 13:32:14,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 13:32:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152572025] [2023-04-01 13:32:14,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152572025] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:32:14,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:32:14,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 13:32:14,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969196795] [2023-04-01 13:32:14,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:32:14,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 13:32:14,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:32:14,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 13:32:14,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:32:14,290 INFO L87 Difference]: Start difference. First operand 4618 states and 6470 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2023-04-01 13:32:15,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:32:15,331 INFO L93 Difference]: Finished difference Result 7857 states and 10900 transitions. [2023-04-01 13:32:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 13:32:15,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) Word has length 226 [2023-04-01 13:32:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:32:15,345 INFO L225 Difference]: With dead ends: 7857 [2023-04-01 13:32:15,345 INFO L226 Difference]: Without dead ends: 3271 [2023-04-01 13:32:15,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:32:15,359 INFO L413 NwaCegarLoop]: 1851 mSDtfsCounter, 233 mSDsluCounter, 5123 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 6974 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 13:32:15,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 6974 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 13:32:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2023-04-01 13:32:15,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3173. [2023-04-01 13:32:15,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 1999 states have (on average 1.31815907953977) internal successors, (2635), 2018 states have internal predecessors, (2635), 834 states have call successors, (834), 338 states have call predecessors, (834), 339 states have return successors, (851), 830 states have call predecessors, (851), 832 states have call successors, (851) [2023-04-01 13:32:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 4320 transitions. [2023-04-01 13:32:15,456 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 4320 transitions. Word has length 226 [2023-04-01 13:32:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:32:15,456 INFO L495 AbstractCegarLoop]: Abstraction has 3173 states and 4320 transitions. [2023-04-01 13:32:15,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2023-04-01 13:32:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 4320 transitions. [2023-04-01 13:32:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-04-01 13:32:15,465 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:32:15,465 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:32:15,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 13:32:15,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:32:15,683 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:32:15,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:32:15,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1880881448, now seen corresponding path program 1 times [2023-04-01 13:32:15,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:32:15,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25496431] [2023-04-01 13:32:15,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:32:15,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:32:15,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 13:32:15,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294388379] [2023-04-01 13:32:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:32:15,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:32:15,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:32:15,763 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:32:15,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 13:32:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:32:16,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 3495 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 13:32:16,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:32:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-01 13:32:16,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 13:32:16,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:32:16,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25496431] [2023-04-01 13:32:16,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 13:32:16,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294388379] [2023-04-01 13:32:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294388379] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:32:16,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:32:16,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 13:32:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608822215] [2023-04-01 13:32:16,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:32:16,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 13:32:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:32:16,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 13:32:16,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-04-01 13:32:16,665 INFO L87 Difference]: Start difference. First operand 3173 states and 4320 transitions. Second operand has 8 states, 8 states have (on average 20.0) internal successors, (160), 6 states have internal predecessors, (160), 4 states have call successors, (53), 3 states have call predecessors, (53), 5 states have return successors, (47), 6 states have call predecessors, (47), 4 states have call successors, (47) [2023-04-01 13:32:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:32:17,578 INFO L93 Difference]: Finished difference Result 6434 states and 8778 transitions. [2023-04-01 13:32:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 13:32:17,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 6 states have internal predecessors, (160), 4 states have call successors, (53), 3 states have call predecessors, (53), 5 states have return successors, (47), 6 states have call predecessors, (47), 4 states have call successors, (47) Word has length 276 [2023-04-01 13:32:17,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:32:17,592 INFO L225 Difference]: With dead ends: 6434 [2023-04-01 13:32:17,592 INFO L226 Difference]: Without dead ends: 3306 [2023-04-01 13:32:17,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-01 13:32:17,601 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 205 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 13:32:17,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 4162 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 13:32:17,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2023-04-01 13:32:17,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 3183. [2023-04-01 13:32:17,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3183 states, 2005 states have (on average 1.317206982543641) internal successors, (2641), 2024 states have internal predecessors, (2641), 837 states have call successors, (837), 338 states have call predecessors, (837), 340 states have return successors, (855), 834 states have call predecessors, (855), 835 states have call successors, (855) [2023-04-01 13:32:17,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4333 transitions. [2023-04-01 13:32:17,700 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4333 transitions. Word has length 276 [2023-04-01 13:32:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:32:17,701 INFO L495 AbstractCegarLoop]: Abstraction has 3183 states and 4333 transitions. [2023-04-01 13:32:17,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 6 states have internal predecessors, (160), 4 states have call successors, (53), 3 states have call predecessors, (53), 5 states have return successors, (47), 6 states have call predecessors, (47), 4 states have call successors, (47) [2023-04-01 13:32:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4333 transitions. [2023-04-01 13:32:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-04-01 13:32:17,710 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:32:17,710 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:32:17,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 13:32:17,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:32:17,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:32:17,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:32:17,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1045599407, now seen corresponding path program 1 times [2023-04-01 13:32:17,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:32:17,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398209404] [2023-04-01 13:32:17,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:32:17,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:32:17,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 13:32:17,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055071931] [2023-04-01 13:32:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:32:17,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:32:17,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:32:17,985 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:32:17,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 13:32:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:32:18,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-01 13:32:18,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:32:19,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 13:32:19,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-04-01 13:32:19,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-04-01 13:32:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-01 13:32:19,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 13:32:19,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2023-04-01 13:32:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-04-01 13:32:19,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:32:19,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398209404] [2023-04-01 13:32:19,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 13:32:19,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055071931] [2023-04-01 13:32:19,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055071931] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 13:32:19,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [148705705] [2023-04-01 13:32:19,931 INFO L159 IcfgInterpreter]: Started Sifa with 231 locations of interest [2023-04-01 13:32:19,931 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 13:32:19,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 13:32:19,938 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 13:32:19,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs