/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/seq-mthreaded/rekh_ctm.2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:31:29,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:31:29,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:31:30,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:31:30,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:31:30,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:31:30,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:31:30,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:31:30,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:31:30,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:31:30,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:31:30,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:31:30,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:31:30,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:31:30,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:31:30,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:31:30,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:31:30,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:31:30,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:31:30,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:31:30,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:31:30,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:31:30,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:31:30,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:31:30,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:31:30,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:31:30,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:31:30,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:31:30,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:31:30,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:31:30,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:31:30,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:31:30,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:31:30,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:31:30,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:31:30,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:31:30,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:31:30,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:31:30,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:31:30,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:31:30,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:31:30,038 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 12:31:30,066 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:31:30,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:31:30,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:31:30,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:31:30,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:31:30,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:31:30,067 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:31:30,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:31:30,068 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:31:30,068 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:31:30,068 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:31:30,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:31:30,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:31:30,068 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:31:30,068 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:31:30,068 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:31:30,068 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:31:30,068 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:31:30,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:31:30,069 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:31:30,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:31:30,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:31:30,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:31:30,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:31:30,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:31:30,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:31:30,070 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:31:30,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:31:30,070 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:31:30,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:31:30,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:31:30,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:31:30,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:31:30,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:31:30,070 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:31:30,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:31:30,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:31:30,071 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:31:30,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:31:30,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:31:30,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:31:30,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:31:30,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:31:30,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:31:30,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:31:30,253 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:31:30,254 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:31:30,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2023-04-01 12:31:31,441 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:31:31,728 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:31:31,728 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2023-04-01 12:31:31,758 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4477dcc/602d4d4078f4430f98d456343342327a/FLAGa88364af7 [2023-04-01 12:31:31,772 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4477dcc/602d4d4078f4430f98d456343342327a [2023-04-01 12:31:31,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:31:31,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:31:31,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:31:31,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:31:31,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:31:31,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:31:31" (1/1) ... [2023-04-01 12:31:31,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cfa124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:31, skipping insertion in model container [2023-04-01 12:31:31,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:31:31" (1/1) ... [2023-04-01 12:31:31,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:31:31,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:31:32,025 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/seq-mthreaded/rekh_ctm.2-2.c[1870,1883] [2023-04-01 12:31:32,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:31:32,492 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:31:32,501 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/seq-mthreaded/rekh_ctm.2-2.c[1870,1883] [2023-04-01 12:31:32,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:31:32,687 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:31:32,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32 WrapperNode [2023-04-01 12:31:32,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:31:32,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:31:32,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:31:32,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:31:32,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32" (1/1) ... [2023-04-01 12:31:32,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32" (1/1) ... [2023-04-01 12:31:32,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32" (1/1) ... [2023-04-01 12:31:32,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32" (1/1) ... [2023-04-01 12:31:32,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32" (1/1) ... [2023-04-01 12:31:32,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32" (1/1) ... [2023-04-01 12:31:32,904 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32" (1/1) ... [2023-04-01 12:31:32,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32" (1/1) ... [2023-04-01 12:31:32,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:31:32,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:31:32,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:31:32,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:31:32,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32" (1/1) ... [2023-04-01 12:31:32,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:31:33,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:31:33,074 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 12:31:33,076 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 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calibrate [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_is_ENTER_button_pressed [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-04-01 12:31:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-04-01 12:31:33,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_light [2023-04-01 12:31:33,129 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2023-04-01 12:31:33,129 INFO L138 BoogieDeclarations]: Found implementation of procedure transition [2023-04-01 12:31:33,129 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 12:31:33,129 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2023-04-01 12:31:33,129 INFO L138 BoogieDeclarations]: Found implementation of procedure Controller [2023-04-01 12:31:33,129 INFO L138 BoogieDeclarations]: Found implementation of procedure Reader [2023-04-01 12:31:33,129 INFO L138 BoogieDeclarations]: Found implementation of procedure Writer [2023-04-01 12:31:33,172 INFO L138 BoogieDeclarations]: Found implementation of procedure TapeMover [2023-04-01 12:31:33,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperController [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperTapeMover [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperReader [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperWriter [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_schedule_jobs [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_globals [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2023-04-01 12:31:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_assert_i0 [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_init [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_final [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2023-04-01 12:31:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_dir [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_read [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_job_count_Controller [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_job_count_TapeMover [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_job_count_Reader [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_job_count_Writer [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2023-04-01 12:31:33,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_speed [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_speed [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_speed [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtcolorsensor_data_mode [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtcolorsensor_mode [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_threshold [2023-04-01 12:31:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2023-04-01 12:31:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2023-04-01 12:31:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2023-04-01 12:31:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_job_count_Controller [2023-04-01 12:31:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_job_count_TapeMover [2023-04-01 12:31:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_job_count_Reader [2023-04-01 12:31:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_job_count_Writer [2023-04-01 12:31:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_shared [2023-04-01 12:31:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:31:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:31:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:31:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:31:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_shared [2023-04-01 12:31:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_assert_i0 [2023-04-01 12:31:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cpu_lock [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cpu_unlock [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2023-04-01 12:31:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_speed [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_speed [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_speed [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure calibrate [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2023-04-01 12:31:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtcolorsensor_data_mode [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtcolorsensor_mode [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_is_ENTER_button_pressed [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_light [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2023-04-01 12:31:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_dir [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_read [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_threshold [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2023-04-01 12:31:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2023-04-01 12:31:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2023-04-01 12:31:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2023-04-01 12:31:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2023-04-01 12:31:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure transition [2023-04-01 12:31:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 12:31:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2023-04-01 12:31:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure Controller [2023-04-01 12:31:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure Reader [2023-04-01 12:31:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure Writer [2023-04-01 12:31:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure TapeMover [2023-04-01 12:31:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_job_count_Controller [2023-04-01 12:31:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_job_count_Controller [2023-04-01 12:31:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2023-04-01 12:31:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperController [2023-04-01 12:31:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_job_count_TapeMover [2023-04-01 12:31:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_job_count_TapeMover [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperTapeMover [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_job_count_Reader [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_job_count_Reader [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperReader [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_job_count_Writer [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_job_count_Writer [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperWriter [2023-04-01 12:31:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_schedule_jobs [2023-04-01 12:31:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:31:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:31:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_globals [2023-04-01 12:31:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_init [2023-04-01 12:31:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_final [2023-04-01 12:31:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-04-01 12:31:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:31:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:31:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:31:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:31:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:31:33,699 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:31:33,701 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:31:49,132 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:31:53,702 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:31:53,702 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-01 12:31:53,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:31:53 BoogieIcfgContainer [2023-04-01 12:31:53,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:31:53,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:31:53,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:31:53,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:31:53,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:31:31" (1/3) ... [2023-04-01 12:31:53,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afd311e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:31:53, skipping insertion in model container [2023-04-01 12:31:53,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:31:32" (2/3) ... [2023-04-01 12:31:53,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afd311e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:31:53, skipping insertion in model container [2023-04-01 12:31:53,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:31:53" (3/3) ... [2023-04-01 12:31:53,716 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.2-2.c [2023-04-01 12:31:53,731 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:31:53,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:31:53,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:31:53,805 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;@78c3d11a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:31:53,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:31:53,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 1082 states, 659 states have (on average 1.3566009104704098) internal successors, (894), 687 states have internal predecessors, (894), 338 states have call successors, (338), 79 states have call predecessors, (338), 79 states have return successors, (338), 326 states have call predecessors, (338), 338 states have call successors, (338) [2023-04-01 12:31:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-01 12:31:53,824 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:31:53,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:31:53,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:31:53,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:31:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1547641166, now seen corresponding path program 1 times [2023-04-01 12:31:53,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:31:53,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110028839] [2023-04-01 12:31:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:31:53,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms