/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 IntervalDomain -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 01:31:24,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 01:31:24,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 01:31:24,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 01:31:24,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 01:31:24,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 01:31:24,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 01:31:24,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 01:31:24,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 01:31:24,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 01:31:24,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 01:31:24,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 01:31:24,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 01:31:24,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 01:31:24,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 01:31:24,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 01:31:24,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 01:31:24,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 01:31:24,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 01:31:24,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 01:31:24,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 01:31:24,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 01:31:24,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 01:31:24,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 01:31:24,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 01:31:24,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 01:31:24,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 01:31:24,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 01:31:24,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 01:31:24,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 01:31:24,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 01:31:24,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 01:31:24,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 01:31:24,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 01:31:24,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 01:31:24,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 01:31:24,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 01:31:24,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 01:31:24,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 01:31:24,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 01:31:24,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 01:31:24,224 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 01:31:24,247 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 01:31:24,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 01:31:24,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 01:31:24,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 01:31:24,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 01:31:24,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 01:31:24,249 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 01:31:24,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 01:31:24,249 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 01:31:24,249 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 01:31:24,250 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 01:31:24,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 01:31:24,250 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 01:31:24,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 01:31:24,250 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 01:31:24,250 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 01:31:24,250 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 01:31:24,250 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 01:31:24,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 01:31:24,251 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 01:31:24,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 01:31:24,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 01:31:24,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 01:31:24,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 01:31:24,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 01:31:24,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 01:31:24,251 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 01:31:24,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 01:31:24,251 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 01:31:24,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 01:31:24,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 01:31:24,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 01:31:24,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 01:31:24,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 01:31:24,252 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 01:31:24,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 01:31:24,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 01:31:24,252 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 01:31:24,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 01:31:24,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 01:31:24,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 01:31:24,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 01:31:24,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 01:31:24,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 01:31:24,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 01:31:24,429 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 01:31:24,429 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 01:31:24,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2023-04-01 01:31:25,412 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 01:31:25,672 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 01:31:25,673 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2023-04-01 01:31:25,687 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f638e5ac/0e457fdfac28408498bf96e8e947af48/FLAG272c8eedf [2023-04-01 01:31:25,696 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f638e5ac/0e457fdfac28408498bf96e8e947af48 [2023-04-01 01:31:25,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 01:31:25,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 01:31:25,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 01:31:25,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 01:31:25,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 01:31:25,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:31:25" (1/1) ... [2023-04-01 01:31:25,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180d54d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:25, skipping insertion in model container [2023-04-01 01:31:25,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:31:25" (1/1) ... [2023-04-01 01:31:25,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 01:31:25,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 01:31:26,206 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i[115866,115879] [2023-04-01 01:31:26,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 01:31:26,244 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 01:31:26,361 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i[115866,115879] [2023-04-01 01:31:26,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 01:31:26,397 INFO L208 MainTranslator]: Completed translation [2023-04-01 01:31:26,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26 WrapperNode [2023-04-01 01:31:26,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 01:31:26,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 01:31:26,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 01:31:26,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 01:31:26,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26" (1/1) ... [2023-04-01 01:31:26,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26" (1/1) ... [2023-04-01 01:31:26,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26" (1/1) ... [2023-04-01 01:31:26,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26" (1/1) ... [2023-04-01 01:31:26,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26" (1/1) ... [2023-04-01 01:31:26,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26" (1/1) ... [2023-04-01 01:31:26,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26" (1/1) ... [2023-04-01 01:31:26,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26" (1/1) ... [2023-04-01 01:31:26,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 01:31:26,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 01:31:26,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 01:31:26,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 01:31:26,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26" (1/1) ... [2023-04-01 01:31:26,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 01:31:26,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:31:26,551 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 01:31:26,570 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 01:31:26,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 01:31:26,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 01:31:26,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2023-04-01 01:31:26,584 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 01:31:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-01 01:31:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-04-01 01:31:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-04-01 01:31:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-01 01:31:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-01 01:31:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-01 01:31:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-01 01:31:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-04-01 01:31:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_select_wdt_out [2023-04-01 01:31:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_swc [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_get_swc_base_addr [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_swc_bank3 [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_programm_wdto [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_wden [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_sw_wd_tren [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable_sw_wd_tren [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_sw_wd_trg [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable_sw_wd_trg [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_refresh [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_open [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_release [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_status [2023-04-01 01:31:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_write [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_ioctl [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_notify_sys [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_init [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_exit [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___module_get_5 [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonseekable_open_6 [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_register_7 [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_8 [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_9 [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-04-01 01:31:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2023-04-01 01:31:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2023-04-01 01:31:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 01:31:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-04-01 01:31:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_register [2023-04-01 01:31:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2023-04-01 01:31:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-01 01:31:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure register_reboot_notifier [2023-04-01 01:31:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2023-04-01 01:31:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 01:31:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-01 01:31:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-01 01:31:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 01:31:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 01:31:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2023-04-01 01:31:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___module_get_5 [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 01:31:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure misc_register [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_register_7 [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_8 [2023-04-01 01:31:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_9 [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonseekable_open_6 [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure register_reboot_notifier [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_select_wdt_out [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_swc [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_get_swc_base_addr [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_swc_bank3 [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_programm_wdto [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_wden [2023-04-01 01:31:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_sw_wd_tren [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable_sw_wd_tren [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_sw_wd_trg [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable_sw_wd_trg [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_refresh [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_open [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_release [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_status [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_write [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_ioctl [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 01:31:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_notify_sys [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_init [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_exit [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2023-04-01 01:31:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2023-04-01 01:31:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2023-04-01 01:31:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2023-04-01 01:31:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2023-04-01 01:31:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 01:31:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 01:31:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 01:31:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 01:31:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 01:31:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 01:31:26,893 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 01:31:26,895 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 01:31:26,951 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-01 01:31:27,381 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2023-04-01 01:31:28,486 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 01:31:28,641 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 01:31:28,641 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 01:31:28,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:31:28 BoogieIcfgContainer [2023-04-01 01:31:28,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 01:31:28,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 01:31:28,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 01:31:28,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 01:31:28,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 01:31:25" (1/3) ... [2023-04-01 01:31:28,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db4fd23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:31:28, skipping insertion in model container [2023-04-01 01:31:28,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:31:26" (2/3) ... [2023-04-01 01:31:28,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db4fd23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:31:28, skipping insertion in model container [2023-04-01 01:31:28,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:31:28" (3/3) ... [2023-04-01 01:31:28,649 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2023-04-01 01:31:28,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 01:31:28,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 01:31:28,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 01:31:28,698 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;@74a9fe5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 01:31:28,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 01:31:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 449 states, 236 states have (on average 1.2542372881355932) internal successors, (296), 248 states have internal predecessors, (296), 146 states have call successors, (146), 64 states have call predecessors, (146), 63 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2023-04-01 01:31:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-01 01:31:28,713 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:31:28,714 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:31:28,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:31:28,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:31:28,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1631636506, now seen corresponding path program 1 times [2023-04-01 01:31:28,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:31:28,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34933604] [2023-04-01 01:31:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:28,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:31:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-04-01 01:31:29,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:31:29,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34933604] [2023-04-01 01:31:29,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34933604] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:31:29,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:31:29,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:31:29,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584289370] [2023-04-01 01:31:29,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:31:29,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:31:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:31:29,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:31:29,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:31:29,308 INFO L87 Difference]: Start difference. First operand has 449 states, 236 states have (on average 1.2542372881355932) internal successors, (296), 248 states have internal predecessors, (296), 146 states have call successors, (146), 64 states have call predecessors, (146), 63 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-04-01 01:31:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:31:29,531 INFO L93 Difference]: Finished difference Result 1123 states and 1474 transitions. [2023-04-01 01:31:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:31:29,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 143 [2023-04-01 01:31:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:31:29,561 INFO L225 Difference]: With dead ends: 1123 [2023-04-01 01:31:29,561 INFO L226 Difference]: Without dead ends: 702 [2023-04-01 01:31:29,566 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 01:31:29,568 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 482 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 01:31:29,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 924 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 01:31:29,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-04-01 01:31:29,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2023-04-01 01:31:29,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 379 states have (on average 1.2506596306068603) internal successors, (474), 391 states have internal predecessors, (474), 219 states have call successors, (219), 106 states have call predecessors, (219), 103 states have return successors, (216), 216 states have call predecessors, (216), 216 states have call successors, (216) [2023-04-01 01:31:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 909 transitions. [2023-04-01 01:31:29,630 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 909 transitions. Word has length 143 [2023-04-01 01:31:29,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:31:29,630 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 909 transitions. [2023-04-01 01:31:29,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-04-01 01:31:29,631 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 909 transitions. [2023-04-01 01:31:29,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-01 01:31:29,634 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:31:29,634 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:31:29,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 01:31:29,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:31:29,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:31:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash 219238662, now seen corresponding path program 1 times [2023-04-01 01:31:29,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:31:29,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155093068] [2023-04-01 01:31:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:29,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:31:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-04-01 01:31:29,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:31:29,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155093068] [2023-04-01 01:31:29,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155093068] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:31:29,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418016059] [2023-04-01 01:31:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:29,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:29,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:31:29,946 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 01:31:29,947 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 01:31:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:30,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 01:31:30,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:31:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-04-01 01:31:30,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 01:31:30,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418016059] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:31:30,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 01:31:30,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-01 01:31:30,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391890946] [2023-04-01 01:31:30,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:31:30,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:31:30,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:31:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:31:30,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 01:31:30,475 INFO L87 Difference]: Start difference. First operand 702 states and 909 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-04-01 01:31:30,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:31:30,606 INFO L93 Difference]: Finished difference Result 1353 states and 1764 transitions. [2023-04-01 01:31:30,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:31:30,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2023-04-01 01:31:30,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:31:30,614 INFO L225 Difference]: With dead ends: 1353 [2023-04-01 01:31:30,614 INFO L226 Difference]: Without dead ends: 1324 [2023-04-01 01:31:30,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 01:31:30,616 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 469 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 01:31:30,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1001 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 01:31:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2023-04-01 01:31:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1316. [2023-04-01 01:31:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 717 states have (on average 1.2594142259414225) internal successors, (903), 739 states have internal predecessors, (903), 408 states have call successors, (408), 193 states have call predecessors, (408), 190 states have return successors, (407), 405 states have call predecessors, (407), 405 states have call successors, (407) [2023-04-01 01:31:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1718 transitions. [2023-04-01 01:31:30,690 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1718 transitions. Word has length 142 [2023-04-01 01:31:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:31:30,691 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 1718 transitions. [2023-04-01 01:31:30,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-04-01 01:31:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1718 transitions. [2023-04-01 01:31:30,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-04-01 01:31:30,698 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:31:30,698 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 01:31:30,709 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 01:31:30,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:30,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:31:30,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:31:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2139026728, now seen corresponding path program 1 times [2023-04-01 01:31:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:31:30,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363950749] [2023-04-01 01:31:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:30,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:31:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2023-04-01 01:31:31,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:31:31,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363950749] [2023-04-01 01:31:31,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363950749] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:31:31,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:31:31,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:31:31,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210488352] [2023-04-01 01:31:31,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:31:31,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:31:31,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:31:31,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:31:31,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:31:31,084 INFO L87 Difference]: Start difference. First operand 1316 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-04-01 01:31:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:31:31,221 INFO L93 Difference]: Finished difference Result 2569 states and 3279 transitions. [2023-04-01 01:31:31,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:31:31,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 345 [2023-04-01 01:31:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:31:31,227 INFO L225 Difference]: With dead ends: 2569 [2023-04-01 01:31:31,227 INFO L226 Difference]: Without dead ends: 1298 [2023-04-01 01:31:31,230 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 01:31:31,231 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 228 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 01:31:31,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 965 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 01:31:31,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-04-01 01:31:31,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1272. [2023-04-01 01:31:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 678 states have (on average 1.2094395280235988) internal successors, (820), 695 states have internal predecessors, (820), 381 states have call successors, (381), 216 states have call predecessors, (381), 212 states have return successors, (383), 374 states have call predecessors, (383), 378 states have call successors, (383) [2023-04-01 01:31:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1584 transitions. [2023-04-01 01:31:31,278 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1584 transitions. Word has length 345 [2023-04-01 01:31:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:31:31,278 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1584 transitions. [2023-04-01 01:31:31,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-04-01 01:31:31,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1584 transitions. [2023-04-01 01:31:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-04-01 01:31:31,284 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:31:31,284 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:31,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 01:31:31,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:31:31,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:31:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1566178837, now seen corresponding path program 1 times [2023-04-01 01:31:31,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:31:31,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682614498] [2023-04-01 01:31:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:31,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:31:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-04-01 01:31:31,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:31:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682614498] [2023-04-01 01:31:31,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682614498] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:31:31,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:31:31,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 01:31:31,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533527956] [2023-04-01 01:31:31,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:31:31,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 01:31:31,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:31:31,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 01:31:31,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 01:31:31,652 INFO L87 Difference]: Start difference. First operand 1272 states and 1584 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (68), 4 states have call predecessors, (68), 3 states have call successors, (68) [2023-04-01 01:31:31,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:31:31,834 INFO L93 Difference]: Finished difference Result 2441 states and 3046 transitions. [2023-04-01 01:31:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 01:31:31,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (68), 4 states have call predecessors, (68), 3 states have call successors, (68) Word has length 428 [2023-04-01 01:31:31,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:31:31,842 INFO L225 Difference]: With dead ends: 2441 [2023-04-01 01:31:31,843 INFO L226 Difference]: Without dead ends: 1259 [2023-04-01 01:31:31,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 01:31:31,851 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 9 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 01:31:31,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2533 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 01:31:31,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-04-01 01:31:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1245. [2023-04-01 01:31:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 663 states have (on average 1.2066365007541477) internal successors, (800), 683 states have internal predecessors, (800), 373 states have call successors, (373), 211 states have call predecessors, (373), 208 states have return successors, (375), 364 states have call predecessors, (375), 370 states have call successors, (375) [2023-04-01 01:31:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1548 transitions. [2023-04-01 01:31:31,904 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1548 transitions. Word has length 428 [2023-04-01 01:31:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:31:31,907 INFO L495 AbstractCegarLoop]: Abstraction has 1245 states and 1548 transitions. [2023-04-01 01:31:31,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (68), 4 states have call predecessors, (68), 3 states have call successors, (68) [2023-04-01 01:31:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1548 transitions. [2023-04-01 01:31:31,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-04-01 01:31:31,920 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:31:31,921 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:31:31,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 01:31:31,922 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:31:31,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:31:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash 355615064, now seen corresponding path program 1 times [2023-04-01 01:31:31,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:31:31,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327616332] [2023-04-01 01:31:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:31,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:31:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3524 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 3503 trivial. 0 not checked. [2023-04-01 01:31:33,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:31:33,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327616332] [2023-04-01 01:31:33,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327616332] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:31:33,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253507110] [2023-04-01 01:31:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:33,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:33,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:31:33,009 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 01:31:33,011 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 01:31:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:33,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 3343 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-01 01:31:33,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:31:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3524 backedges. 117 proven. 5 refuted. 0 times theorem prover too weak. 3402 trivial. 0 not checked. [2023-04-01 01:31:34,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 01:31:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3524 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3504 trivial. 0 not checked. [2023-04-01 01:31:35,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253507110] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 01:31:35,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 01:31:35,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 7] total 17 [2023-04-01 01:31:35,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871699314] [2023-04-01 01:31:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:31:35,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 01:31:35,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:31:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 01:31:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-04-01 01:31:35,282 INFO L87 Difference]: Start difference. First operand 1245 states and 1548 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2023-04-01 01:31:35,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:31:35,448 INFO L93 Difference]: Finished difference Result 2182 states and 2722 transitions. [2023-04-01 01:31:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 01:31:35,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) Word has length 730 [2023-04-01 01:31:35,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:31:35,484 INFO L225 Difference]: With dead ends: 2182 [2023-04-01 01:31:35,484 INFO L226 Difference]: Without dead ends: 1065 [2023-04-01 01:31:35,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1471 GetRequests, 1455 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-04-01 01:31:35,486 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 481 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 01:31:35,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1181 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 01:31:35,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-04-01 01:31:35,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1044. [2023-04-01 01:31:35,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 549 states have (on average 1.1967213114754098) internal successors, (657), 563 states have internal predecessors, (657), 323 states have call successors, (323), 174 states have call predecessors, (323), 171 states have return successors, (322), 318 states have call predecessors, (322), 320 states have call successors, (322) [2023-04-01 01:31:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1302 transitions. [2023-04-01 01:31:35,521 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1302 transitions. Word has length 730 [2023-04-01 01:31:35,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:31:35,521 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1302 transitions. [2023-04-01 01:31:35,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2023-04-01 01:31:35,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1302 transitions. [2023-04-01 01:31:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2023-04-01 01:31:35,534 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:31:35,535 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:31:35,546 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 01:31:35,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:35,747 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:31:35,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:31:35,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1502533816, now seen corresponding path program 1 times [2023-04-01 01:31:35,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:31:35,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653389891] [2023-04-01 01:31:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:35,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:31:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3513 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3505 trivial. 0 not checked. [2023-04-01 01:31:36,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:31:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653389891] [2023-04-01 01:31:36,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653389891] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:31:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930979954] [2023-04-01 01:31:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:36,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:36,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:31:36,514 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 01:31:36,516 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 01:31:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:37,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-01 01:31:37,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:31:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3513 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 3417 trivial. 0 not checked. [2023-04-01 01:31:37,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 01:31:37,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930979954] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:31:37,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 01:31:37,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-04-01 01:31:37,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665725392] [2023-04-01 01:31:37,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:31:37,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 01:31:37,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:31:37,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 01:31:37,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-04-01 01:31:37,797 INFO L87 Difference]: Start difference. First operand 1044 states and 1302 transitions. Second operand has 8 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 3 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (95), 5 states have call predecessors, (95), 3 states have call successors, (95) [2023-04-01 01:31:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:31:39,377 INFO L93 Difference]: Finished difference Result 2872 states and 3591 transitions. [2023-04-01 01:31:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 01:31:39,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 3 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (95), 5 states have call predecessors, (95), 3 states have call successors, (95) Word has length 725 [2023-04-01 01:31:39,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:31:39,387 INFO L225 Difference]: With dead ends: 2872 [2023-04-01 01:31:39,388 INFO L226 Difference]: Without dead ends: 2782 [2023-04-01 01:31:39,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-04-01 01:31:39,389 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 792 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 01:31:39,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 3258 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2886 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 01:31:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2023-04-01 01:31:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2760. [2023-04-01 01:31:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2760 states, 1446 states have (on average 1.2053941908713692) internal successors, (1743), 1491 states have internal predecessors, (1743), 863 states have call successors, (863), 448 states have call predecessors, (863), 450 states have return successors, (869), 854 states have call predecessors, (869), 860 states have call successors, (869) [2023-04-01 01:31:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 3475 transitions. [2023-04-01 01:31:39,505 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 3475 transitions. Word has length 725 [2023-04-01 01:31:39,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:31:39,507 INFO L495 AbstractCegarLoop]: Abstraction has 2760 states and 3475 transitions. [2023-04-01 01:31:39,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 3 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (95), 5 states have call predecessors, (95), 3 states have call successors, (95) [2023-04-01 01:31:39,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 3475 transitions. [2023-04-01 01:31:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-04-01 01:31:39,520 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:31:39,520 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 01:31:39,528 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 01:31:39,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:39,729 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:31:39,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:31:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash -746428060, now seen corresponding path program 1 times [2023-04-01 01:31:39,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:31:39,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519367402] [2023-04-01 01:31:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:39,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:31:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 3525 trivial. 0 not checked. [2023-04-01 01:31:40,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:31:40,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519367402] [2023-04-01 01:31:40,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519367402] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:31:40,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123039914] [2023-04-01 01:31:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:40,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:40,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:31:40,205 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 01:31:40,207 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 01:31:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:40,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 3358 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 01:31:40,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:31:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 1548 proven. 0 refuted. 0 times theorem prover too weak. 1992 trivial. 0 not checked. [2023-04-01 01:31:41,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 01:31:41,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123039914] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:31:41,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 01:31:41,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2023-04-01 01:31:41,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215536624] [2023-04-01 01:31:41,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:31:41,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 01:31:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:31:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 01:31:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 01:31:41,202 INFO L87 Difference]: Start difference. First operand 2760 states and 3475 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 3 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (105), 3 states have call predecessors, (105), 3 states have call successors, (105) [2023-04-01 01:31:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:31:41,729 INFO L93 Difference]: Finished difference Result 4618 states and 5935 transitions. [2023-04-01 01:31:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 01:31:41,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 3 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (105), 3 states have call predecessors, (105), 3 states have call successors, (105) Word has length 724 [2023-04-01 01:31:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:31:41,738 INFO L225 Difference]: With dead ends: 4618 [2023-04-01 01:31:41,738 INFO L226 Difference]: Without dead ends: 2013 [2023-04-01 01:31:41,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 01:31:41,744 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 324 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 01:31:41,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1313 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 01:31:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2023-04-01 01:31:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1864. [2023-04-01 01:31:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1028 states have (on average 1.2431906614785992) internal successors, (1278), 1067 states have internal predecessors, (1278), 554 states have call successors, (554), 281 states have call predecessors, (554), 281 states have return successors, (557), 549 states have call predecessors, (557), 551 states have call successors, (557) [2023-04-01 01:31:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2389 transitions. [2023-04-01 01:31:41,852 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2389 transitions. Word has length 724 [2023-04-01 01:31:41,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:31:41,852 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 2389 transitions. [2023-04-01 01:31:41,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 3 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (105), 3 states have call predecessors, (105), 3 states have call successors, (105) [2023-04-01 01:31:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2389 transitions. [2023-04-01 01:31:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2023-04-01 01:31:41,861 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:31:41,861 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 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 01:31:41,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 01:31:42,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:42,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:31:42,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:31:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash 958637082, now seen corresponding path program 1 times [2023-04-01 01:31:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:31:42,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027680234] [2023-04-01 01:31:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:42,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:31:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4902 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4891 trivial. 0 not checked. [2023-04-01 01:31:42,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:31:42,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027680234] [2023-04-01 01:31:42,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027680234] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:31:42,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:31:42,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 01:31:42,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238090271] [2023-04-01 01:31:42,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:31:42,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 01:31:42,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:31:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 01:31:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 01:31:42,655 INFO L87 Difference]: Start difference. First operand 1864 states and 2389 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 4 states have call successors, (106), 4 states have call predecessors, (106), 3 states have return successors, (103), 4 states have call predecessors, (103), 4 states have call successors, (103) [2023-04-01 01:31:45,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:31:47,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:31:48,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:31:50,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:31:52,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:31:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:31:53,350 INFO L93 Difference]: Finished difference Result 5699 states and 7411 transitions. [2023-04-01 01:31:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 01:31:53,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 4 states have call successors, (106), 4 states have call predecessors, (106), 3 states have return successors, (103), 4 states have call predecessors, (103), 4 states have call successors, (103) Word has length 847 [2023-04-01 01:31:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:31:53,382 INFO L225 Difference]: With dead ends: 5699 [2023-04-01 01:31:53,383 INFO L226 Difference]: Without dead ends: 4137 [2023-04-01 01:31:53,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 01:31:53,406 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 780 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 562 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-04-01 01:31:53,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 431 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 1333 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2023-04-01 01:31:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2023-04-01 01:31:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3824. [2023-04-01 01:31:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 2089 states have (on average 1.2359980852082335) internal successors, (2582), 2177 states have internal predecessors, (2582), 1126 states have call successors, (1126), 593 states have call predecessors, (1126), 608 states have return successors, (1171), 1114 states have call predecessors, (1171), 1123 states have call successors, (1171) [2023-04-01 01:31:53,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 4879 transitions. [2023-04-01 01:31:53,669 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 4879 transitions. Word has length 847 [2023-04-01 01:31:53,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:31:53,670 INFO L495 AbstractCegarLoop]: Abstraction has 3824 states and 4879 transitions. [2023-04-01 01:31:53,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 4 states have call successors, (106), 4 states have call predecessors, (106), 3 states have return successors, (103), 4 states have call predecessors, (103), 4 states have call successors, (103) [2023-04-01 01:31:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 4879 transitions. [2023-04-01 01:31:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2023-04-01 01:31:53,683 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:31:53,683 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 01:31:53,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 01:31:53,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:31:53,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:31:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash 304727142, now seen corresponding path program 1 times [2023-04-01 01:31:53,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:31:53,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636856661] [2023-04-01 01:31:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:31:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6110 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 6095 trivial. 0 not checked. [2023-04-01 01:31:54,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:31:54,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636856661] [2023-04-01 01:31:54,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636856661] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:31:54,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259155576] [2023-04-01 01:31:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:54,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:54,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:31:54,937 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 01:31:54,939 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 01:31:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:55,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 3863 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 01:31:55,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:31:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6110 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-04-01 01:31:55,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 01:31:55,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259155576] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:31:55,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 01:31:55,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-04-01 01:31:55,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105962173] [2023-04-01 01:31:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:31:55,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 01:31:55,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:31:55,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 01:31:55,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-01 01:31:55,680 INFO L87 Difference]: Start difference. First operand 3824 states and 4879 transitions. Second operand has 6 states, 4 states have (on average 38.5) internal successors, (154), 6 states have internal predecessors, (154), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-04-01 01:31:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:31:56,011 INFO L93 Difference]: Finished difference Result 7625 states and 9737 transitions. [2023-04-01 01:31:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 01:31:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 38.5) internal successors, (154), 6 states have internal predecessors, (154), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) Word has length 913 [2023-04-01 01:31:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:31:56,028 INFO L225 Difference]: With dead ends: 7625 [2023-04-01 01:31:56,028 INFO L226 Difference]: Without dead ends: 3825 [2023-04-01 01:31:56,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 910 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-01 01:31:56,039 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 3 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 01:31:56,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2371 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 01:31:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2023-04-01 01:31:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 3825. [2023-04-01 01:31:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3825 states, 2090 states have (on average 1.235885167464115) internal successors, (2583), 2178 states have internal predecessors, (2583), 1126 states have call successors, (1126), 593 states have call predecessors, (1126), 608 states have return successors, (1171), 1114 states have call predecessors, (1171), 1123 states have call successors, (1171) [2023-04-01 01:31:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 4880 transitions. [2023-04-01 01:31:56,210 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 4880 transitions. Word has length 913 [2023-04-01 01:31:56,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:31:56,211 INFO L495 AbstractCegarLoop]: Abstraction has 3825 states and 4880 transitions. [2023-04-01 01:31:56,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 38.5) internal successors, (154), 6 states have internal predecessors, (154), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-04-01 01:31:56,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 4880 transitions. [2023-04-01 01:31:56,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2023-04-01 01:31:56,227 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:31:56,227 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 01:31:56,257 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 01:31:56,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:56,440 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:31:56,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:31:56,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1884005788, now seen corresponding path program 1 times [2023-04-01 01:31:56,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:31:56,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797408838] [2023-04-01 01:31:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:56,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:31:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6161 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 6146 trivial. 0 not checked. [2023-04-01 01:31:57,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:31:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797408838] [2023-04-01 01:31:57,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797408838] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:31:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102374363] [2023-04-01 01:31:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:31:57,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:31:57,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:31:57,610 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 01:31:57,611 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 01:31:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:31:58,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 3953 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 01:31:58,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:31:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6161 backedges. 130 proven. 1 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2023-04-01 01:31:58,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 01:32:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6161 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 6120 trivial. 0 not checked. [2023-04-01 01:32:00,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102374363] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 01:32:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1188771952] [2023-04-01 01:32:00,374 INFO L159 IcfgInterpreter]: Started Sifa with 291 locations of interest [2023-04-01 01:32:00,374 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 01:32:00,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 01:32:00,381 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 01:32:00,382 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 01:32:01,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 88 for LOIs [2023-04-01 01:32:02,303 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 114 for LOIs [2023-04-01 01:32:07,088 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 84 for LOIs [2023-04-01 01:32:07,364 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 94 for LOIs [2023-04-01 01:32:07,453 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_initialize with input of size 70 for LOIs [2023-04-01 01:32:07,459 INFO L197 IcfgInterpreter]: Interpreting procedure pc87413_init with input of size 92 for LOIs [2023-04-01 01:32:07,639 INFO L197 IcfgInterpreter]: Interpreting procedure __request_region with input of size 95 for LOIs [2023-04-01 01:32:07,777 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 79 for LOIs [2023-04-01 01:32:07,803 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 76 for LOIs [2023-04-01 01:32:08,127 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 105 for LOIs [2023-04-01 01:32:08,155 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 83 for LOIs [2023-04-01 01:32:08,165 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 75 for LOIs [2023-04-01 01:32:08,174 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 01:32:19,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1188771952] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:32:19,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 01:32:19,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [7, 7, 7] total 71 [2023-04-01 01:32:19,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5195506] [2023-04-01 01:32:19,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:32:19,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-04-01 01:32:19,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:32:19,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-04-01 01:32:19,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=4727, Unknown=0, NotChecked=0, Total=4970 [2023-04-01 01:32:19,188 INFO L87 Difference]: Start difference. First operand 3825 states and 4880 transitions. Second operand has 57 states, 38 states have (on average 3.8421052631578947) internal successors, (146), 36 states have internal predecessors, (146), 16 states have call successors, (100), 13 states have call predecessors, (100), 11 states have return successors, (97), 13 states have call predecessors, (97), 15 states have call successors, (97)