/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 13:34:00,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 13:34:00,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 13:34:00,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 13:34:00,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 13:34:00,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 13:34:00,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 13:34:00,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 13:34:00,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 13:34:00,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 13:34:00,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 13:34:00,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 13:34:00,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 13:34:00,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 13:34:00,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 13:34:00,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 13:34:00,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 13:34:00,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 13:34:00,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 13:34:00,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 13:34:00,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 13:34:00,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 13:34:00,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 13:34:00,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 13:34:00,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 13:34:00,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 13:34:00,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 13:34:00,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 13:34:00,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 13:34:00,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 13:34:00,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 13:34:00,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 13:34:00,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 13:34:00,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 13:34:00,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 13:34:00,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 13:34:00,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 13:34:00,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 13:34:00,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 13:34:00,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 13:34:00,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 13:34:00,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 13:34:00,260 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 13:34:00,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 13:34:00,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 13:34:00,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 13:34:00,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 13:34:00,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 13:34:00,262 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 13:34:00,262 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 13:34:00,262 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 13:34:00,262 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 13:34:00,263 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 13:34:00,263 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 13:34:00,263 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 13:34:00,263 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 13:34:00,263 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 13:34:00,263 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 13:34:00,263 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 13:34:00,263 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 13:34:00,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 13:34:00,264 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 13:34:00,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 13:34:00,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 13:34:00,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 13:34:00,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 13:34:00,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 13:34:00,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 13:34:00,265 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 13:34:00,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 13:34:00,265 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 13:34:00,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 13:34:00,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 13:34:00,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 13:34:00,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 13:34:00,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 13:34:00,266 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 13:34:00,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 13:34:00,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 13:34:00,266 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 13:34:00,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 13:34:00,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 13:34:00,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 13:34:00,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 13:34:00,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 13:34:00,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 13:34:00,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 13:34:00,467 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 13:34:00,468 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 13:34:00,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-04-01 13:34:01,447 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 13:34:01,831 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 13:34:01,831 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-04-01 13:34:01,857 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b03da0b/e02149cd8e6444788bcefb007e903832/FLAG40199c226 [2023-04-01 13:34:01,871 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b03da0b/e02149cd8e6444788bcefb007e903832 [2023-04-01 13:34:01,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 13:34:01,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 13:34:01,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 13:34:01,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 13:34:01,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 13:34:01,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:34:01" (1/1) ... [2023-04-01 13:34:01,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254c53bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:01, skipping insertion in model container [2023-04-01 13:34:01,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:34:01" (1/1) ... [2023-04-01 13:34:01,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 13:34:01,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 13:34:02,668 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2023-04-01 13:34:02,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 13:34:02,752 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 13:34:02,893 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2023-04-01 13:34:02,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 13:34:02,957 INFO L208 MainTranslator]: Completed translation [2023-04-01 13:34:02,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02 WrapperNode [2023-04-01 13:34:02,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 13:34:02,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 13:34:02,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 13:34:02,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 13:34:02,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02" (1/1) ... [2023-04-01 13:34:02,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02" (1/1) ... [2023-04-01 13:34:03,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02" (1/1) ... [2023-04-01 13:34:03,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02" (1/1) ... [2023-04-01 13:34:03,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02" (1/1) ... [2023-04-01 13:34:03,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02" (1/1) ... [2023-04-01 13:34:03,161 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02" (1/1) ... [2023-04-01 13:34:03,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02" (1/1) ... [2023-04-01 13:34:03,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 13:34:03,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 13:34:03,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 13:34:03,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 13:34:03,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02" (1/1) ... [2023-04-01 13:34:03,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 13:34:03,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:34:03,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 13:34:03,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-04-01 13:34:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure enter_4op_mode [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_ioctl [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_detect [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_kill_note [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure store_instr [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_set_instr [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_vol [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure set_voice_volume [2023-04-01 13:34:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_start_note [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_to_fnum [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_command [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_reset [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_open [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_close [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_hw_control [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_load_patch [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_panning [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_volume_method [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_aftertouch [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure bend_pitch [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_controller [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_bender [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_alloc_voice [2023-04-01 13:34:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_setup_voice [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_init [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure init_opl3 [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_opl3 [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_to_user_2 [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_3 [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_4 [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_user_nocache [2023-04-01 13:34:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_finetune [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure conf_printf2 [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure note_to_freq [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure sequencer_init [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_alloc_synthdev [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_unload_synthdev [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-01 13:34:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-01 13:34:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-01 13:34:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-04-01 13:34:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-04-01 13:34:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_to_user_2 [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_user_nocache [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_3 [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_4 [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure sequencer_init [2023-04-01 13:34:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure note_to_freq [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure compute_finetune [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure conf_printf2 [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure sound_unload_synthdev [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure sound_alloc_synthdev [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure store_instr [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure freq_to_fnum [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_command [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_kill_note [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure enter_4op_mode [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_ioctl [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_detect [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-01 13:34:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_set_instr [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure calc_vol [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure set_voice_volume [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_start_note [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_reset [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_open [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_close [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_hw_control [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_load_patch [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_panning [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_volume_method [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_aftertouch [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure bend_pitch [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_controller [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_bender [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_alloc_voice [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_setup_voice [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_init [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure init_opl3 [2023-04-01 13:34:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_opl3 [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-01 13:34:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-01 13:34:03,691 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 13:34:03,693 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 13:34:04,028 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-01 13:34:07,473 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 13:34:08,030 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 13:34:08,030 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-01 13:34:08,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:34:08 BoogieIcfgContainer [2023-04-01 13:34:08,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 13:34:08,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 13:34:08,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 13:34:08,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 13:34:08,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 01:34:01" (1/3) ... [2023-04-01 13:34:08,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204f067e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:34:08, skipping insertion in model container [2023-04-01 13:34:08,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:34:02" (2/3) ... [2023-04-01 13:34:08,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204f067e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:34:08, skipping insertion in model container [2023-04-01 13:34:08,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:34:08" (3/3) ... [2023-04-01 13:34:08,039 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-04-01 13:34:08,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 13:34:08,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 13:34:08,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 13:34:08,091 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;@3fc0b2a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 13:34:08,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 13:34:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 803 states, 481 states have (on average 1.338877338877339) internal successors, (644), 501 states have internal predecessors, (644), 249 states have call successors, (249), 69 states have call predecessors, (249), 68 states have return successors, (246), 242 states have call predecessors, (246), 246 states have call successors, (246) [2023-04-01 13:34:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-04-01 13:34:08,112 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:08,112 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:08,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:08,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash 217651767, now seen corresponding path program 1 times [2023-04-01 13:34:08,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:08,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877798650] [2023-04-01 13:34:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:08,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5247 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5247 trivial. 0 not checked. [2023-04-01 13:34:09,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:09,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877798650] [2023-04-01 13:34:09,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877798650] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:09,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:34:09,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:34:09,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131942453] [2023-04-01 13:34:09,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:09,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:34:09,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:09,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:34:09,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:34:09,223 INFO L87 Difference]: Start difference. First operand has 803 states, 481 states have (on average 1.338877338877339) internal successors, (644), 501 states have internal predecessors, (644), 249 states have call successors, (249), 69 states have call predecessors, (249), 68 states have return successors, (246), 242 states have call predecessors, (246), 246 states have call successors, (246) Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-04-01 13:34:12,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:12,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:34:12,207 INFO L93 Difference]: Finished difference Result 1675 states and 2409 transitions. [2023-04-01 13:34:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:34:12,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 430 [2023-04-01 13:34:12,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:34:12,223 INFO L225 Difference]: With dead ends: 1675 [2023-04-01 13:34:12,223 INFO L226 Difference]: Without dead ends: 941 [2023-04-01 13:34:12,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:34:12,231 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 423 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 13:34:12,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1830 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 294 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 13:34:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-04-01 13:34:12,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 940. [2023-04-01 13:34:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 566 states have (on average 1.3215547703180213) internal successors, (748), 586 states have internal predecessors, (748), 291 states have call successors, (291), 84 states have call predecessors, (291), 82 states have return successors, (289), 284 states have call predecessors, (289), 289 states have call successors, (289) [2023-04-01 13:34:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1328 transitions. [2023-04-01 13:34:12,308 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1328 transitions. Word has length 430 [2023-04-01 13:34:12,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:34:12,310 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1328 transitions. [2023-04-01 13:34:12,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-04-01 13:34:12,310 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1328 transitions. [2023-04-01 13:34:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-04-01 13:34:12,316 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:12,317 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:12,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 13:34:12,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:12,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:12,318 INFO L85 PathProgramCache]: Analyzing trace with hash -916988924, now seen corresponding path program 1 times [2023-04-01 13:34:12,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:12,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740115087] [2023-04-01 13:34:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:12,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5251 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5249 trivial. 0 not checked. [2023-04-01 13:34:13,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740115087] [2023-04-01 13:34:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740115087] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:34:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 13:34:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493476945] [2023-04-01 13:34:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:13,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 13:34:13,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:13,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 13:34:13,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 13:34:13,363 INFO L87 Difference]: Start difference. First operand 940 states and 1328 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-04-01 13:34:15,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:17,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:18,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:34:18,266 INFO L93 Difference]: Finished difference Result 1771 states and 2506 transitions. [2023-04-01 13:34:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:34:18,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 449 [2023-04-01 13:34:18,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:34:18,272 INFO L225 Difference]: With dead ends: 1771 [2023-04-01 13:34:18,272 INFO L226 Difference]: Without dead ends: 940 [2023-04-01 13:34:18,275 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 [2023-04-01 13:34:18,275 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 986 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-01 13:34:18,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1496 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 673 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2023-04-01 13:34:18,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-04-01 13:34:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 940. [2023-04-01 13:34:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 566 states have (on average 1.3180212014134276) internal successors, (746), 586 states have internal predecessors, (746), 291 states have call successors, (291), 84 states have call predecessors, (291), 82 states have return successors, (289), 284 states have call predecessors, (289), 289 states have call successors, (289) [2023-04-01 13:34:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1326 transitions. [2023-04-01 13:34:18,377 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1326 transitions. Word has length 449 [2023-04-01 13:34:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:34:18,378 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1326 transitions. [2023-04-01 13:34:18,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-04-01 13:34:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1326 transitions. [2023-04-01 13:34:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-04-01 13:34:18,382 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:18,383 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:18,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 13:34:18,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:18,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:18,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1569844106, now seen corresponding path program 1 times [2023-04-01 13:34:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:18,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064220846] [2023-04-01 13:34:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:18,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5255 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5253 trivial. 0 not checked. [2023-04-01 13:34:19,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:19,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064220846] [2023-04-01 13:34:19,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064220846] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:19,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:34:19,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 13:34:19,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030577323] [2023-04-01 13:34:19,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:19,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 13:34:19,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:19,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 13:34:19,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:34:19,443 INFO L87 Difference]: Start difference. First operand 940 states and 1326 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2023-04-01 13:34:21,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:23,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:25,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:34:26,497 INFO L93 Difference]: Finished difference Result 1777 states and 2506 transitions. [2023-04-01 13:34:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 13:34:26,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) Word has length 459 [2023-04-01 13:34:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:34:26,502 INFO L225 Difference]: With dead ends: 1777 [2023-04-01 13:34:26,502 INFO L226 Difference]: Without dead ends: 940 [2023-04-01 13:34:26,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:34:26,508 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 0 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-04-01 13:34:26,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3932 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 404 Invalid, 3 Unknown, 0 Unchecked, 7.0s Time] [2023-04-01 13:34:26,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-04-01 13:34:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 940. [2023-04-01 13:34:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 566 states have (on average 1.314487632508834) internal successors, (744), 586 states have internal predecessors, (744), 291 states have call successors, (291), 84 states have call predecessors, (291), 82 states have return successors, (289), 284 states have call predecessors, (289), 289 states have call successors, (289) [2023-04-01 13:34:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1324 transitions. [2023-04-01 13:34:26,546 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1324 transitions. Word has length 459 [2023-04-01 13:34:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:34:26,548 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1324 transitions. [2023-04-01 13:34:26,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2023-04-01 13:34:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1324 transitions. [2023-04-01 13:34:26,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-04-01 13:34:26,554 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:26,554 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:26,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 13:34:26,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:26,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1967832462, now seen corresponding path program 1 times [2023-04-01 13:34:26,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:26,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778404634] [2023-04-01 13:34:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:26,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5261 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5259 trivial. 0 not checked. [2023-04-01 13:34:27,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:27,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778404634] [2023-04-01 13:34:27,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778404634] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:27,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:34:27,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 13:34:27,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46276819] [2023-04-01 13:34:27,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:27,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 13:34:27,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:27,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 13:34:27,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:34:27,619 INFO L87 Difference]: Start difference. First operand 940 states and 1324 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2023-04-01 13:34:29,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:31,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:33,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:35,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:34:36,347 INFO L93 Difference]: Finished difference Result 1779 states and 2506 transitions. [2023-04-01 13:34:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 13:34:36,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) Word has length 471 [2023-04-01 13:34:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:34:36,354 INFO L225 Difference]: With dead ends: 1779 [2023-04-01 13:34:36,355 INFO L226 Difference]: Without dead ends: 914 [2023-04-01 13:34:36,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:34:36,359 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 0 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-04-01 13:34:36,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3921 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 408 Invalid, 4 Unknown, 0 Unchecked, 8.7s Time] [2023-04-01 13:34:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-04-01 13:34:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 914. [2023-04-01 13:34:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 554 states have (on average 1.3068592057761732) internal successors, (724), 572 states have internal predecessors, (724), 279 states have call successors, (279), 82 states have call predecessors, (279), 80 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2023-04-01 13:34:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1280 transitions. [2023-04-01 13:34:36,428 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1280 transitions. Word has length 471 [2023-04-01 13:34:36,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:34:36,428 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1280 transitions. [2023-04-01 13:34:36,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2023-04-01 13:34:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1280 transitions. [2023-04-01 13:34:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-04-01 13:34:36,436 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:36,437 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:36,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 13:34:36,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:36,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:36,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1562827770, now seen corresponding path program 1 times [2023-04-01 13:34:36,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:36,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526768509] [2023-04-01 13:34:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:36,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5384 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 5364 trivial. 0 not checked. [2023-04-01 13:34:37,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526768509] [2023-04-01 13:34:37,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526768509] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 13:34:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780807962] [2023-04-01 13:34:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:37,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:34:37,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:34:37,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:34:37,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 13:34:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:39,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 10600 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 13:34:39,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:34:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5384 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 5349 trivial. 0 not checked. [2023-04-01 13:34:39,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 13:34:39,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780807962] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:39,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 13:34:39,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-04-01 13:34:39,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119756920] [2023-04-01 13:34:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:39,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:34:39,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:34:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 13:34:39,417 INFO L87 Difference]: Start difference. First operand 914 states and 1280 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2023-04-01 13:34:41,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:43,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:34:43,786 INFO L93 Difference]: Finished difference Result 1731 states and 2529 transitions. [2023-04-01 13:34:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:34:43,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 583 [2023-04-01 13:34:43,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:34:43,792 INFO L225 Difference]: With dead ends: 1731 [2023-04-01 13:34:43,792 INFO L226 Difference]: Without dead ends: 926 [2023-04-01 13:34:43,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 13:34:43,796 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 2 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-01 13:34:43,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1911 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2023-04-01 13:34:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-04-01 13:34:43,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 918. [2023-04-01 13:34:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 558 states have (on average 1.3046594982078854) internal successors, (728), 576 states have internal predecessors, (728), 279 states have call successors, (279), 82 states have call predecessors, (279), 80 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2023-04-01 13:34:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1284 transitions. [2023-04-01 13:34:43,905 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1284 transitions. Word has length 583 [2023-04-01 13:34:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:34:43,906 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1284 transitions. [2023-04-01 13:34:43,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2023-04-01 13:34:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1284 transitions. [2023-04-01 13:34:43,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2023-04-01 13:34:43,909 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:43,910 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:43,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 13:34:44,133 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 [2023-04-01 13:34:44,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:44,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1340058614, now seen corresponding path program 1 times [2023-04-01 13:34:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:44,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898897806] [2023-04-01 13:34:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:44,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5437 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5435 trivial. 0 not checked. [2023-04-01 13:34:44,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:44,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898897806] [2023-04-01 13:34:44,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898897806] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:44,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:34:44,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:34:44,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046227113] [2023-04-01 13:34:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:44,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:34:44,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:34:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:34:44,898 INFO L87 Difference]: Start difference. First operand 918 states and 1284 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2023-04-01 13:34:47,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:49,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:34:49,306 INFO L93 Difference]: Finished difference Result 1733 states and 2430 transitions. [2023-04-01 13:34:49,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:34:49,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 593 [2023-04-01 13:34:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:34:49,312 INFO L225 Difference]: With dead ends: 1733 [2023-04-01 13:34:49,312 INFO L226 Difference]: Without dead ends: 924 [2023-04-01 13:34:49,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:34:49,315 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 1 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 13:34:49,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1916 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 13:34:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2023-04-01 13:34:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 920. [2023-04-01 13:34:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 560 states have (on average 1.3035714285714286) internal successors, (730), 578 states have internal predecessors, (730), 279 states have call successors, (279), 82 states have call predecessors, (279), 80 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2023-04-01 13:34:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1286 transitions. [2023-04-01 13:34:49,343 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1286 transitions. Word has length 593 [2023-04-01 13:34:49,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:34:49,344 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1286 transitions. [2023-04-01 13:34:49,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2023-04-01 13:34:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1286 transitions. [2023-04-01 13:34:49,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-04-01 13:34:49,348 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:49,348 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:49,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 13:34:49,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:49,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash 488998686, now seen corresponding path program 1 times [2023-04-01 13:34:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:49,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848472472] [2023-04-01 13:34:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:49,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5547 trivial. 0 not checked. [2023-04-01 13:34:50,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:50,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848472472] [2023-04-01 13:34:50,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848472472] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 13:34:50,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822369000] [2023-04-01 13:34:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:50,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:34:50,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:34:50,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:34:50,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 13:34:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:52,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 10676 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 13:34:52,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:34:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 168 proven. 1 refuted. 0 times theorem prover too weak. 5381 trivial. 0 not checked. [2023-04-01 13:34:52,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 13:34:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5547 trivial. 0 not checked. [2023-04-01 13:34:52,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822369000] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 13:34:52,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2014961362] [2023-04-01 13:34:52,915 INFO L159 IcfgInterpreter]: Started Sifa with 229 locations of interest [2023-04-01 13:34:52,915 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 13:34:52,919 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 13:34:52,924 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 13:34:52,924 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs