/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 04:24:38,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 04:24:38,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 04:24:38,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 04:24:38,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 04:24:38,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 04:24:38,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 04:24:38,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 04:24:38,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 04:24:38,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 04:24:38,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 04:24:38,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 04:24:38,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 04:24:38,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 04:24:38,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 04:24:38,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 04:24:38,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 04:24:38,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 04:24:38,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 04:24:38,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 04:24:38,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 04:24:38,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 04:24:38,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 04:24:38,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 04:24:38,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 04:24:38,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 04:24:38,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 04:24:38,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 04:24:38,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 04:24:38,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 04:24:38,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 04:24:38,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 04:24:38,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 04:24:38,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 04:24:38,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 04:24:38,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 04:24:38,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 04:24:38,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 04:24:38,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 04:24:38,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 04:24:38,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 04:24:38,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 04:24:38,966 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 04:24:38,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 04:24:38,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 04:24:38,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 04:24:38,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 04:24:38,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 04:24:38,967 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 04:24:38,967 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 04:24:38,968 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 04:24:38,968 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 04:24:38,968 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 04:24:38,968 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 04:24:38,968 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 04:24:38,968 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 04:24:38,969 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 04:24:38,969 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 04:24:38,969 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 04:24:38,969 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 04:24:38,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 04:24:38,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 04:24:38,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 04:24:38,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 04:24:38,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 04:24:38,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 04:24:38,971 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 04:24:38,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 04:24:38,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 04:24:38,971 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 04:24:38,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 04:24:38,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 04:24:38,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 04:24:38,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 04:24:39,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 04:24:39,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 04:24:39,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 04:24:39,178 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 04:24:39,179 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 04:24:39,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2023-04-03 04:24:40,253 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 04:24:40,594 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 04:24:40,594 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2023-04-03 04:24:40,624 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d875ff3/f99b122708cc4f3085111bad62e82500/FLAGda2387686 [2023-04-03 04:24:40,633 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d875ff3/f99b122708cc4f3085111bad62e82500 [2023-04-03 04:24:40,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 04:24:40,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 04:24:40,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 04:24:40,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 04:24:40,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 04:24:40,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 04:24:40" (1/1) ... [2023-04-03 04:24:40,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc673b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:40, skipping insertion in model container [2023-04-03 04:24:40,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 04:24:40" (1/1) ... [2023-04-03 04:24:40,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 04:24:40,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 04:24:41,463 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i[148417,148430] [2023-04-03 04:24:41,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 04:24:41,546 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 04:24:41,738 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i[148417,148430] [2023-04-03 04:24:41,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 04:24:41,788 INFO L208 MainTranslator]: Completed translation [2023-04-03 04:24:41,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41 WrapperNode [2023-04-03 04:24:41,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 04:24:41,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 04:24:41,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 04:24:41,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 04:24:41,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41" (1/1) ... [2023-04-03 04:24:41,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41" (1/1) ... [2023-04-03 04:24:41,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41" (1/1) ... [2023-04-03 04:24:41,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41" (1/1) ... [2023-04-03 04:24:41,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41" (1/1) ... [2023-04-03 04:24:41,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41" (1/1) ... [2023-04-03 04:24:41,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41" (1/1) ... [2023-04-03 04:24:41,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41" (1/1) ... [2023-04-03 04:24:41,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 04:24:41,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 04:24:41,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 04:24:41,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 04:24:41,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41" (1/1) ... [2023-04-03 04:24:41,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 04:24:41,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:24:42,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 04:24:42,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 04:24:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 04:24:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 04:24:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2023-04-03 04:24:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~int [2023-04-03 04:24:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 04:24:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-03 04:24:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-04-03 04:24:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_cur_bytes [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_cur_bytes [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_cur_sectors [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ps_set_intr [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ps_tq_int [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_block_open [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_block_release [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_block_ioctl [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_block_check_events [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_init_units [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_open [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_release [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_wait [2023-04-03 04:24:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_command [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_completion [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_req_sense [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_atapi [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_packet [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_check_events [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_lock_door [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_tray_move [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_sleep [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_reset [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_drive_reset [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_ready_wait [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_drive_status [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_identify [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_probe [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_probe_capabilities [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_detect [2023-04-03 04:24:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure do_pcd_request [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure next_request [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_ready [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_transfer [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_start [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure do_pcd_read [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure do_pcd_read_drq [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_audio_ioctl [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_get_mcn [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_init [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_exit [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_1 [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_2 [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_3 [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_4 [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2023-04-03 04:24:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_6 [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_7 [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_8 [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_10 [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_11 [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_12 [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_13 [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_pcd_mutex [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_pcd_mutex [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pcd_mutex [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_pcd_mutex [2023-04-03 04:24:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_pcd_mutex [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_pcd_mutex [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pcd_mutex [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request_all [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request_cur [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure add_disk [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_fetch_request [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_init_queue [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure cdrom_check_events [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure cdrom_ioctl [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure cdrom_open [2023-04-03 04:24:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure cdrom_release [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure delayed_work_timer_fn [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_do_claimed [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_regr [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure register_blkdev [2023-04-03 04:24:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure register_cdrom [2023-04-03 04:24:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-04-03 04:24:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2023-04-03 04:24:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2023-04-03 04:24:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_cdrom [2023-04-03 04:24:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-03 04:24:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-03 04:24:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2023-04-03 04:24:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_6 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_2 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_4 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_7 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_11 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_13 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_1 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_3 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_8 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_10 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_12 [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2023-04-03 04:24:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pcd_mutex [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pcd_mutex [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure register_blkdev [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure cdrom_open [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure cdrom_release [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure cdrom_ioctl [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure cdrom_check_events [2023-04-03 04:24:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure register_cdrom [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_cdrom [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_disk [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure bio_cur_bytes [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_cur_bytes [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_cur_sectors [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure blk_fetch_request [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request_all [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request_cur [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure blk_init_queue [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2023-04-03 04:24:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_regr [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pi_do_claimed [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure ps_tq_int [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure ps_set_intr [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~int [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_open [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_release [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_drive_status [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_check_events [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_tray_move [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_lock_door [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_drive_reset [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_get_mcn [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_audio_ioctl [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_packet [2023-04-03 04:24:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_detect [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_probe_capabilities [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure do_pcd_read_drq [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure do_pcd_request [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure do_pcd_read [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_block_open [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_block_release [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_block_ioctl [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_block_check_events [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_init_units [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2023-04-03 04:24:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_wait [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_command [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_completion [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_req_sense [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_atapi [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_sleep [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_reset [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_ready_wait [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_identify [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_probe [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure next_request [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_ready [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_transfer [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_start [2023-04-03 04:24:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_init [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_exit [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2023-04-03 04:24:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_pcd_mutex [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_pcd_mutex [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_pcd_mutex [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_pcd_mutex [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_pcd_mutex [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-03 04:24:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-03 04:24:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-03 04:24:42,423 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 04:24:42,426 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 04:24:45,543 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 04:24:46,093 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 04:24:46,093 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-04-03 04:24:46,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 04:24:46 BoogieIcfgContainer [2023-04-03 04:24:46,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 04:24:46,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 04:24:46,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 04:24:46,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 04:24:46,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 04:24:40" (1/3) ... [2023-04-03 04:24:46,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200c3257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 04:24:46, skipping insertion in model container [2023-04-03 04:24:46,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:24:41" (2/3) ... [2023-04-03 04:24:46,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200c3257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 04:24:46, skipping insertion in model container [2023-04-03 04:24:46,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 04:24:46" (3/3) ... [2023-04-03 04:24:46,102 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2023-04-03 04:24:46,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 04:24:46,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 04:24:46,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 04:24:46,157 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;@2cc09903, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 04:24:46,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 04:24:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 515 states have (on average 1.3145631067961165) internal successors, (677), 542 states have internal predecessors, (677), 233 states have call successors, (233), 99 states have call predecessors, (233), 99 states have return successors, (233), 226 states have call predecessors, (233), 233 states have call successors, (233) [2023-04-03 04:24:46,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-03 04:24:46,171 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:24:46,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:24:46,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:24:46,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:24:46,174 INFO L85 PathProgramCache]: Analyzing trace with hash -639161195, now seen corresponding path program 1 times [2023-04-03 04:24:46,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:24:46,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816495473] [2023-04-03 04:24:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:24:46,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:24:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:24:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 04:24:46,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:24:46,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816495473] [2023-04-03 04:24:46,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816495473] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:24:46,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:24:46,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:24:46,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421680317] [2023-04-03 04:24:46,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:24:46,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:24:46,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:24:46,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:24:46,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:24:46,600 INFO L87 Difference]: Start difference. First operand has 874 states, 515 states have (on average 1.3145631067961165) internal successors, (677), 542 states have internal predecessors, (677), 233 states have call successors, (233), 99 states have call predecessors, (233), 99 states have return successors, (233), 226 states have call predecessors, (233), 233 states have call successors, (233) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-03 04:24:48,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:24:48,545 INFO L93 Difference]: Finished difference Result 2275 states and 3213 transitions. [2023-04-03 04:24:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:24:48,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-04-03 04:24:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:24:48,573 INFO L225 Difference]: With dead ends: 2275 [2023-04-03 04:24:48,573 INFO L226 Difference]: Without dead ends: 1464 [2023-04-03 04:24:48,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:24:48,584 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 931 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-03 04:24:48,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1878 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-03 04:24:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2023-04-03 04:24:48,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1451. [2023-04-03 04:24:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 872 states have (on average 1.3337155963302751) internal successors, (1163), 911 states have internal predecessors, (1163), 406 states have call successors, (406), 175 states have call predecessors, (406), 172 states have return successors, (398), 382 states have call predecessors, (398), 398 states have call successors, (398) [2023-04-03 04:24:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1967 transitions. [2023-04-03 04:24:48,719 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1967 transitions. Word has length 26 [2023-04-03 04:24:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:24:48,719 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 1967 transitions. [2023-04-03 04:24:48,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-03 04:24:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1967 transitions. [2023-04-03 04:24:48,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-03 04:24:48,727 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:24:48,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:24:48,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 04:24:48,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:24:48,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:24:48,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1554679990, now seen corresponding path program 1 times [2023-04-03 04:24:48,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:24:48,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306146563] [2023-04-03 04:24:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:24:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:24:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:24:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 04:24:48,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:24:48,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306146563] [2023-04-03 04:24:48,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306146563] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:24:48,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:24:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 04:24:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853023681] [2023-04-03 04:24:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:24:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 04:24:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:24:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 04:24:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 04:24:48,862 INFO L87 Difference]: Start difference. First operand 1451 states and 1967 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-03 04:24:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:24:51,435 INFO L93 Difference]: Finished difference Result 2893 states and 3927 transitions. [2023-04-03 04:24:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:24:51,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-04-03 04:24:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:24:51,444 INFO L225 Difference]: With dead ends: 2893 [2023-04-03 04:24:51,444 INFO L226 Difference]: Without dead ends: 1451 [2023-04-03 04:24:51,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 04:24:51,449 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 1042 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-03 04:24:51,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 1438 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-03 04:24:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2023-04-03 04:24:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1451. [2023-04-03 04:24:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 872 states have (on average 1.3314220183486238) internal successors, (1161), 911 states have internal predecessors, (1161), 406 states have call successors, (406), 175 states have call predecessors, (406), 172 states have return successors, (398), 382 states have call predecessors, (398), 398 states have call successors, (398) [2023-04-03 04:24:51,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1965 transitions. [2023-04-03 04:24:51,506 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1965 transitions. Word has length 27 [2023-04-03 04:24:51,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:24:51,507 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 1965 transitions. [2023-04-03 04:24:51,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-03 04:24:51,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1965 transitions. [2023-04-03 04:24:51,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-03 04:24:51,508 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:24:51,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:24:51,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 04:24:51,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:24:51,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:24:51,511 INFO L85 PathProgramCache]: Analyzing trace with hash 972118011, now seen corresponding path program 1 times [2023-04-03 04:24:51,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:24:51,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452099318] [2023-04-03 04:24:51,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:24:51,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:24:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:24:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 04:24:51,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:24:51,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452099318] [2023-04-03 04:24:51,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452099318] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:24:51,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:24:51,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:24:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278661517] [2023-04-03 04:24:51,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:24:51,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:24:51,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:24:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:24:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:24:51,676 INFO L87 Difference]: Start difference. First operand 1451 states and 1965 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-03 04:24:53,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:24:53,153 INFO L93 Difference]: Finished difference Result 3596 states and 4872 transitions. [2023-04-03 04:24:53,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:24:53,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2023-04-03 04:24:53,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:24:53,162 INFO L225 Difference]: With dead ends: 3596 [2023-04-03 04:24:53,162 INFO L226 Difference]: Without dead ends: 2154 [2023-04-03 04:24:53,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:24:53,166 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 874 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 04:24:53,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1723 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 04:24:53,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2023-04-03 04:24:53,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2126. [2023-04-03 04:24:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 1275 states have (on average 1.3247058823529412) internal successors, (1689), 1331 states have internal predecessors, (1689), 601 states have call successors, (601), 252 states have call predecessors, (601), 249 states have return successors, (593), 571 states have call predecessors, (593), 593 states have call successors, (593) [2023-04-03 04:24:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 2883 transitions. [2023-04-03 04:24:53,230 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 2883 transitions. Word has length 31 [2023-04-03 04:24:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:24:53,230 INFO L495 AbstractCegarLoop]: Abstraction has 2126 states and 2883 transitions. [2023-04-03 04:24:53,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-03 04:24:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 2883 transitions. [2023-04-03 04:24:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-03 04:24:53,231 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:24:53,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:24:53,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 04:24:53,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:24:53,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:24:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1090683237, now seen corresponding path program 1 times [2023-04-03 04:24:53,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:24:53,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900499650] [2023-04-03 04:24:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:24:53,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:24:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:24:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 04:24:53,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:24:53,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900499650] [2023-04-03 04:24:53,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900499650] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:24:53,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:24:53,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:24:53,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32399508] [2023-04-03 04:24:53,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:24:53,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:24:53,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:24:53,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:24:53,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:24:53,440 INFO L87 Difference]: Start difference. First operand 2126 states and 2883 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-03 04:24:55,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:24:55,406 INFO L93 Difference]: Finished difference Result 3942 states and 5347 transitions. [2023-04-03 04:24:55,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:24:55,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2023-04-03 04:24:55,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:24:55,414 INFO L225 Difference]: With dead ends: 3942 [2023-04-03 04:24:55,414 INFO L226 Difference]: Without dead ends: 2138 [2023-04-03 04:24:55,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:24:55,419 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 6 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-03 04:24:55,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1869 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-03 04:24:55,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2023-04-03 04:24:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2128. [2023-04-03 04:24:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 1277 states have (on average 1.3241973375097886) internal successors, (1691), 1333 states have internal predecessors, (1691), 601 states have call successors, (601), 252 states have call predecessors, (601), 249 states have return successors, (593), 571 states have call predecessors, (593), 593 states have call successors, (593) [2023-04-03 04:24:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 2885 transitions. [2023-04-03 04:24:55,477 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 2885 transitions. Word has length 44 [2023-04-03 04:24:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:24:55,477 INFO L495 AbstractCegarLoop]: Abstraction has 2128 states and 2885 transitions. [2023-04-03 04:24:55,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-03 04:24:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 2885 transitions. [2023-04-03 04:24:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-03 04:24:55,478 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:24:55,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:24:55,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 04:24:55,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:24:55,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:24:55,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1005247316, now seen corresponding path program 1 times [2023-04-03 04:24:55,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:24:55,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69145911] [2023-04-03 04:24:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:24:55,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:24:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:24:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 04:24:55,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:24:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69145911] [2023-04-03 04:24:55,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69145911] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:24:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864744297] [2023-04-03 04:24:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:24:55,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:24:55,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:24:55,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 04:24:55,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 04:24:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:24:56,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-03 04:24:56,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:24:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 04:24:56,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 04:24:56,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864744297] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:24:56,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 04:24:56,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-04-03 04:24:56,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311736346] [2023-04-03 04:24:56,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:24:56,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:24:56,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:24:56,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:24:56,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:24:56,090 INFO L87 Difference]: Start difference. First operand 2128 states and 2885 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-03 04:24:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:24:57,700 INFO L93 Difference]: Finished difference Result 3962 states and 5377 transitions. [2023-04-03 04:24:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:24:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 47 [2023-04-03 04:24:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:24:57,708 INFO L225 Difference]: With dead ends: 3962 [2023-04-03 04:24:57,708 INFO L226 Difference]: Without dead ends: 2156 [2023-04-03 04:24:57,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:24:57,712 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 11 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 04:24:57,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1871 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 04:24:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2023-04-03 04:24:57,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2132. [2023-04-03 04:24:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1281 states have (on average 1.3231850117096018) internal successors, (1695), 1337 states have internal predecessors, (1695), 601 states have call successors, (601), 252 states have call predecessors, (601), 249 states have return successors, (593), 571 states have call predecessors, (593), 593 states have call successors, (593) [2023-04-03 04:24:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2889 transitions. [2023-04-03 04:24:57,860 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2889 transitions. Word has length 47 [2023-04-03 04:24:57,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:24:57,861 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 2889 transitions. [2023-04-03 04:24:57,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-03 04:24:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2889 transitions. [2023-04-03 04:24:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-04-03 04:24:57,864 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:24:57,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:24:57,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-03 04:24:58,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:24:58,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:24:58,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:24:58,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1471991836, now seen corresponding path program 1 times [2023-04-03 04:24:58,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:24:58,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587811091] [2023-04-03 04:24:58,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:24:58,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:24:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:24:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 04:24:58,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:24:58,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587811091] [2023-04-03 04:24:58,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587811091] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:24:58,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031781836] [2023-04-03 04:24:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:24:58,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:24:58,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:24:58,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 04:24:58,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-03 04:24:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:24:58,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 04:24:58,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:24:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 04:24:58,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 04:24:58,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031781836] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:24:58,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 04:24:58,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-04-03 04:24:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109967909] [2023-04-03 04:24:58,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:24:58,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:24:58,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:24:58,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:24:58,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:24:58,664 INFO L87 Difference]: Start difference. First operand 2132 states and 2889 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-03 04:25:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:25:00,327 INFO L93 Difference]: Finished difference Result 5694 states and 7711 transitions. [2023-04-03 04:25:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:25:00,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2023-04-03 04:25:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:25:00,341 INFO L225 Difference]: With dead ends: 5694 [2023-04-03 04:25:00,341 INFO L226 Difference]: Without dead ends: 3884 [2023-04-03 04:25:00,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:00,348 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 1014 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-03 04:25:00,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1896 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-03 04:25:00,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2023-04-03 04:25:00,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 2704. [2023-04-03 04:25:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2704 states, 1633 states have (on average 1.3159828536436007) internal successors, (2149), 1697 states have internal predecessors, (2149), 757 states have call successors, (757), 314 states have call predecessors, (757), 313 states have return successors, (753), 729 states have call predecessors, (753), 749 states have call successors, (753) [2023-04-03 04:25:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3659 transitions. [2023-04-03 04:25:00,440 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3659 transitions. Word has length 50 [2023-04-03 04:25:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:25:00,440 INFO L495 AbstractCegarLoop]: Abstraction has 2704 states and 3659 transitions. [2023-04-03 04:25:00,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-03 04:25:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3659 transitions. [2023-04-03 04:25:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-03 04:25:00,442 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:25:00,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:25:00,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-03 04:25:00,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-03 04:25:00,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:25:00,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:25:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash 823078811, now seen corresponding path program 1 times [2023-04-03 04:25:00,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:25:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450566436] [2023-04-03 04:25:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:25:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 04:25:00,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:25:00,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450566436] [2023-04-03 04:25:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450566436] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:25:00,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700819993] [2023-04-03 04:25:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:25:00,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:25:00,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 04:25:00,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-03 04:25:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:01,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 04:25:01,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:25:01,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 04:25:01,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 04:25:01,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700819993] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:25:01,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 04:25:01,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-04-03 04:25:01,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544664616] [2023-04-03 04:25:01,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:25:01,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:25:01,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:25:01,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:25:01,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:01,346 INFO L87 Difference]: Start difference. First operand 2704 states and 3659 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 04:25:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:25:03,175 INFO L93 Difference]: Finished difference Result 5120 states and 6937 transitions. [2023-04-03 04:25:03,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:25:03,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2023-04-03 04:25:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:25:03,187 INFO L225 Difference]: With dead ends: 5120 [2023-04-03 04:25:03,187 INFO L226 Difference]: Without dead ends: 2738 [2023-04-03 04:25:03,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:03,195 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 22 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 04:25:03,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1854 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 04:25:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2023-04-03 04:25:03,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2730. [2023-04-03 04:25:03,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 1653 states have (on average 1.3169993950393224) internal successors, (2177), 1717 states have internal predecessors, (2177), 763 states have call successors, (763), 314 states have call predecessors, (763), 313 states have return successors, (759), 735 states have call predecessors, (759), 755 states have call successors, (759) [2023-04-03 04:25:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3699 transitions. [2023-04-03 04:25:03,287 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3699 transitions. Word has length 51 [2023-04-03 04:25:03,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:25:03,287 INFO L495 AbstractCegarLoop]: Abstraction has 2730 states and 3699 transitions. [2023-04-03 04:25:03,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 04:25:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3699 transitions. [2023-04-03 04:25:03,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-03 04:25:03,289 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:25:03,289 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:25:03,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-03 04:25:03,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:25:03,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:25:03,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:25:03,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1852415521, now seen corresponding path program 1 times [2023-04-03 04:25:03,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:25:03,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308802892] [2023-04-03 04:25:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:03,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:25:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-03 04:25:03,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:25:03,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308802892] [2023-04-03 04:25:03,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308802892] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:25:03,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983555017] [2023-04-03 04:25:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:03,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:25:03,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:25:03,633 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) [2023-04-03 04:25:03,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-03 04:25:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:04,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 04:25:04,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:25:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 04:25:04,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 04:25:04,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983555017] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:25:04,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 04:25:04,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-04-03 04:25:04,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475745067] [2023-04-03 04:25:04,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:25:04,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:25:04,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:25:04,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:25:04,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:04,116 INFO L87 Difference]: Start difference. First operand 2730 states and 3699 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 04:25:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:25:05,149 INFO L93 Difference]: Finished difference Result 2732 states and 3700 transitions. [2023-04-03 04:25:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:25:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2023-04-03 04:25:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:25:05,159 INFO L225 Difference]: With dead ends: 2732 [2023-04-03 04:25:05,159 INFO L226 Difference]: Without dead ends: 2729 [2023-04-03 04:25:05,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:05,161 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 997 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 04:25:05,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 939 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 04:25:05,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2023-04-03 04:25:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2729. [2023-04-03 04:25:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2729 states, 1653 states have (on average 1.3163944343617664) internal successors, (2176), 1716 states have internal predecessors, (2176), 762 states have call successors, (762), 314 states have call predecessors, (762), 313 states have return successors, (759), 735 states have call predecessors, (759), 755 states have call successors, (759) [2023-04-03 04:25:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 3697 transitions. [2023-04-03 04:25:05,260 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 3697 transitions. Word has length 61 [2023-04-03 04:25:05,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:25:05,260 INFO L495 AbstractCegarLoop]: Abstraction has 2729 states and 3697 transitions. [2023-04-03 04:25:05,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 04:25:05,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 3697 transitions. [2023-04-03 04:25:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-03 04:25:05,265 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:25:05,266 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:25:05,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-03 04:25:05,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:25:05,474 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:25:05,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:25:05,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1589771555, now seen corresponding path program 1 times [2023-04-03 04:25:05,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:25:05,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840889395] [2023-04-03 04:25:05,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:05,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:25:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-03 04:25:05,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:25:05,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840889395] [2023-04-03 04:25:05,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840889395] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:25:05,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906901942] [2023-04-03 04:25:05,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:05,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:25:05,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:25:05,597 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) [2023-04-03 04:25:05,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-03 04:25:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:06,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 1880 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 04:25:06,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:25:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 04:25:06,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 04:25:06,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906901942] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:25:06,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 04:25:06,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-04-03 04:25:06,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708202390] [2023-04-03 04:25:06,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:25:06,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:25:06,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:25:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:25:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:06,101 INFO L87 Difference]: Start difference. First operand 2729 states and 3697 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 04:25:07,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:25:07,392 INFO L93 Difference]: Finished difference Result 2731 states and 3698 transitions. [2023-04-03 04:25:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:25:07,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 62 [2023-04-03 04:25:07,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:25:07,404 INFO L225 Difference]: With dead ends: 2731 [2023-04-03 04:25:07,405 INFO L226 Difference]: Without dead ends: 2728 [2023-04-03 04:25:07,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:07,407 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 994 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 04:25:07,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 937 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 04:25:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2023-04-03 04:25:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 2728. [2023-04-03 04:25:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2728 states, 1653 states have (on average 1.3157894736842106) internal successors, (2175), 1715 states have internal predecessors, (2175), 761 states have call successors, (761), 314 states have call predecessors, (761), 313 states have return successors, (759), 735 states have call predecessors, (759), 755 states have call successors, (759) [2023-04-03 04:25:07,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 3695 transitions. [2023-04-03 04:25:07,497 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 3695 transitions. Word has length 62 [2023-04-03 04:25:07,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:25:07,497 INFO L495 AbstractCegarLoop]: Abstraction has 2728 states and 3695 transitions. [2023-04-03 04:25:07,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 04:25:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 3695 transitions. [2023-04-03 04:25:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-03 04:25:07,499 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:25:07,499 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:25:07,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-03 04:25:07,708 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 [2023-04-03 04:25:07,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:25:07,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:25:07,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2037748068, now seen corresponding path program 1 times [2023-04-03 04:25:07,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:25:07,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535974257] [2023-04-03 04:25:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:07,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:25:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-03 04:25:07,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:25:07,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535974257] [2023-04-03 04:25:07,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535974257] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:25:07,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096711550] [2023-04-03 04:25:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:07,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:25:07,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:25:07,950 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) [2023-04-03 04:25:07,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-03 04:25:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:08,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1882 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 04:25:08,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:25:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 04:25:08,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 04:25:08,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096711550] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:25:08,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 04:25:08,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-04-03 04:25:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104010101] [2023-04-03 04:25:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:25:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:25:08,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:25:08,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:25:08,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:08,464 INFO L87 Difference]: Start difference. First operand 2728 states and 3695 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 04:25:09,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:25:09,264 INFO L93 Difference]: Finished difference Result 2730 states and 3696 transitions. [2023-04-03 04:25:09,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:25:09,264 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), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 63 [2023-04-03 04:25:09,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:25:09,273 INFO L225 Difference]: With dead ends: 2730 [2023-04-03 04:25:09,273 INFO L226 Difference]: Without dead ends: 2727 [2023-04-03 04:25:09,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:09,274 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 991 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 04:25:09,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 935 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 04:25:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2023-04-03 04:25:09,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2727. [2023-04-03 04:25:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 1653 states have (on average 1.3151845130066546) internal successors, (2174), 1714 states have internal predecessors, (2174), 760 states have call successors, (760), 314 states have call predecessors, (760), 313 states have return successors, (759), 735 states have call predecessors, (759), 755 states have call successors, (759) [2023-04-03 04:25:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3693 transitions. [2023-04-03 04:25:09,390 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3693 transitions. Word has length 63 [2023-04-03 04:25:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:25:09,391 INFO L495 AbstractCegarLoop]: Abstraction has 2727 states and 3693 transitions. [2023-04-03 04:25:09,391 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), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 04:25:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3693 transitions. [2023-04-03 04:25:09,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-03 04:25:09,393 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:25:09,393 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:25:09,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-03 04:25:09,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:25:09,603 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:25:09,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:25:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1254844346, now seen corresponding path program 1 times [2023-04-03 04:25:09,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:25:09,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098959990] [2023-04-03 04:25:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:09,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:25:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-03 04:25:09,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:25:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098959990] [2023-04-03 04:25:09,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098959990] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:25:09,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182808973] [2023-04-03 04:25:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:09,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:25:09,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:25:09,701 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 04:25:09,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-03 04:25:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:10,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 04:25:10,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:25:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 04:25:10,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 04:25:10,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182808973] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:25:10,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 04:25:10,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-04-03 04:25:10,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803805656] [2023-04-03 04:25:10,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:25:10,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:25:10,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:25:10,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:25:10,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:10,193 INFO L87 Difference]: Start difference. First operand 2727 states and 3693 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 04:25:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:25:11,410 INFO L93 Difference]: Finished difference Result 2729 states and 3694 transitions. [2023-04-03 04:25:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:25:11,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 64 [2023-04-03 04:25:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:25:11,427 INFO L225 Difference]: With dead ends: 2729 [2023-04-03 04:25:11,428 INFO L226 Difference]: Without dead ends: 2691 [2023-04-03 04:25:11,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:25:11,429 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 943 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 04:25:11,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 966 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 04:25:11,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2023-04-03 04:25:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2691. [2023-04-03 04:25:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 1634 states have (on average 1.3151774785801713) internal successors, (2149), 1692 states have internal predecessors, (2149), 750 states have call successors, (750), 306 states have call predecessors, (750), 306 states have return successors, (752), 728 states have call predecessors, (752), 748 states have call successors, (752) [2023-04-03 04:25:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3651 transitions. [2023-04-03 04:25:11,540 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3651 transitions. Word has length 64 [2023-04-03 04:25:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:25:11,541 INFO L495 AbstractCegarLoop]: Abstraction has 2691 states and 3651 transitions. [2023-04-03 04:25:11,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 04:25:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3651 transitions. [2023-04-03 04:25:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-03 04:25:11,548 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:25:11,548 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:25:11,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-03 04:25:11,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:25:11,758 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:25:11,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:25:11,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1059685655, now seen corresponding path program 1 times [2023-04-03 04:25:11,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:25:11,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481649134] [2023-04-03 04:25:11,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:11,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:25:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-03 04:25:11,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:25:11,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481649134] [2023-04-03 04:25:11,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481649134] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:25:11,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108429543] [2023-04-03 04:25:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:25:11,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:25:11,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:25:11,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 04:25:11,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-03 04:25:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:25:12,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 1994 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 04:25:12,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:25:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-03 04:25:12,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 04:25:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-03 04:25:12,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108429543] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 04:25:12,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1432392918] [2023-04-03 04:25:12,505 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2023-04-03 04:25:12,505 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 04:25:12,508 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 04:25:12,512 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 04:25:12,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 04:25:19,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 301 for LOIs [2023-04-03 04:25:22,647 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 298 for LOIs