/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:35:30,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:35:30,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:35:30,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:35:30,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:35:30,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:35:30,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:35:30,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:35:30,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:35:30,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:35:30,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:35:30,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:35:30,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:35:30,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:35:30,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:35:30,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:35:30,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:35:30,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:35:30,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:35:30,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:35:30,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:35:30,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:35:30,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:35:30,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:35:30,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:35:30,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:35:30,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:35:30,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:35:30,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:35:30,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:35:30,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:35:30,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:35:30,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:35:30,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:35:30,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:35:30,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:35:30,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:35:30,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:35:30,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:35:30,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:35:30,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:35:30,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 15:35:30,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:35:30,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:35:30,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:35:30,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:35:30,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:35:30,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:35:30,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:35:30,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:35:30,919 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:35:30,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:35:30,919 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:35:30,920 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:35:30,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:35:30,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:35:30,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:35:30,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:35:30,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:35:30,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:35:30,921 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:35:30,921 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:35:30,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:35:30,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:35:30,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:35:30,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:35:30,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:35:30,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:35:30,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:35:30,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:35:30,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:35:30,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:35:30,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:35:30,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:35:30,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:35:30,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:35:31,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:35:31,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:35:31,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:35:31,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:35:31,345 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:35:31,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c [2022-10-16 15:35:31,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b150d671/15e9f63a9f3d4d0b86335f01b697c8b4/FLAGb192b4fb9 [2022-10-16 15:35:32,525 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:35:32,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c [2022-10-16 15:35:32,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b150d671/15e9f63a9f3d4d0b86335f01b697c8b4/FLAGb192b4fb9 [2022-10-16 15:35:32,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b150d671/15e9f63a9f3d4d0b86335f01b697c8b4 [2022-10-16 15:35:32,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:35:32,942 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:35:32,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:35:32,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:35:32,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:35:32,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:35:32" (1/1) ... [2022-10-16 15:35:32,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad98054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:32, skipping insertion in model container [2022-10-16 15:35:32,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:35:32" (1/1) ... [2022-10-16 15:35:32,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:35:33,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:35:33,458 WARN L230 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/rekcba_nxt.3.M4.c[2275,2288] [2022-10-16 15:35:34,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:35:34,922 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:35:34,938 WARN L230 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/rekcba_nxt.3.M4.c[2275,2288] [2022-10-16 15:35:36,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:35:36,132 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:35:36,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36 WrapperNode [2022-10-16 15:35:36,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:35:36,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:35:36,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:35:36,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:35:36,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:36,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:38,153 INFO L138 Inliner]: procedures = 62, calls = 18852, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 41167 [2022-10-16 15:35:38,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:35:38,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:35:38,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:35:38,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:35:38,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:38,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:38,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:38,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:39,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:39,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:39,559 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:39,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:39,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:35:39,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:35:39,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:35:39,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:35:39,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (1/1) ... [2022-10-16 15:35:39,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:35:39,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:35:40,002 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) [2022-10-16 15:35:40,026 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 [2022-10-16 15:35:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:35:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:35:40,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:35:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:35:40,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:35:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:35:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:35:40,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:35:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:35:40,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:35:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-10-16 15:35:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-10-16 15:35:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:35:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:35:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:35:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:35:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:35:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:35:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:35:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:35:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:35:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:35:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:35:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:35:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:35:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:35:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:35:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-16 15:35:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-16 15:35:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:35:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:35:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-16 15:35:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-16 15:35:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:35:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:35:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:35:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:35:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:35:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:35:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:35:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:35:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:35:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:35:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:35:41,781 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:35:41,784 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:36:51,760 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:36:51,837 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:36:51,837 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:36:51,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:36:51 BoogieIcfgContainer [2022-10-16 15:36:51,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:36:51,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:36:51,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:36:51,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:36:51,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:35:32" (1/3) ... [2022-10-16 15:36:51,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614a67f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:36:51, skipping insertion in model container [2022-10-16 15:36:51,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:36" (2/3) ... [2022-10-16 15:36:51,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614a67f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:36:51, skipping insertion in model container [2022-10-16 15:36:51,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:36:51" (3/3) ... [2022-10-16 15:36:51,871 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.3.M4.c [2022-10-16 15:36:51,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:36:51,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 222 error locations. [2022-10-16 15:36:52,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:36:52,246 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;@176136fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:36:52,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 222 error locations. [2022-10-16 15:36:52,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 12932 states, 8348 states have (on average 1.3296597987541927) internal successors, (11100), 8681 states have internal predecessors, (11100), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) [2022-10-16 15:36:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 15:36:52,307 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:36:52,308 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 15:36:52,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__startrek_entry_pt_OSEK_Task_ts1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, __startrek_entry_pt_OSEK_Task_ts1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 220 more)] === [2022-10-16 15:36:52,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:36:52,316 INFO L85 PathProgramCache]: Analyzing trace with hash 872895634, now seen corresponding path program 1 times [2022-10-16 15:36:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:36:52,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610641119] [2022-10-16 15:36:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:36:52,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 15:36:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 15:36:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:53,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 15:36:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 15:36:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:53,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 15:36:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:53,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 15:36:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 15:36:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-16 15:36:53,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 15:36:53,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610641119] [2022-10-16 15:36:53,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610641119] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 15:36:53,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 15:36:53,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 15:36:53,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199941323] [2022-10-16 15:36:53,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 15:36:53,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 15:36:53,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 15:36:53,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 15:36:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:36:53,580 INFO L87 Difference]: Start difference. First operand has 12932 states, 8348 states have (on average 1.3296597987541927) internal successors, (11100), 8681 states have internal predecessors, (11100), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 15:36:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 15:36:54,630 INFO L93 Difference]: Finished difference Result 25647 states and 43891 transitions. [2022-10-16 15:36:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 15:36:54,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2022-10-16 15:36:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 15:36:54,800 INFO L225 Difference]: With dead ends: 25647 [2022-10-16 15:36:54,800 INFO L226 Difference]: Without dead ends: 11846 [2022-10-16 15:36:54,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:36:54,933 INFO L413 NwaCegarLoop]: 19571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19571 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 15:36:54,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19571 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 15:36:54,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2022-10-16 15:37:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 11846. [2022-10-16 15:37:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11846 states, 7906 states have (on average 1.3206425499620542) internal successors, (10441), 8026 states have internal predecessors, (10441), 3913 states have call successors, (3913), 17 states have call predecessors, (3913), 17 states have return successors, (3912), 3910 states have call predecessors, (3912), 3912 states have call successors, (3912) [2022-10-16 15:37:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11846 states to 11846 states and 18266 transitions. [2022-10-16 15:37:04,381 INFO L78 Accepts]: Start accepts. Automaton has 11846 states and 18266 transitions. Word has length 41 [2022-10-16 15:37:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 15:37:04,382 INFO L495 AbstractCegarLoop]: Abstraction has 11846 states and 18266 transitions. [2022-10-16 15:37:04,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 15:37:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand 11846 states and 18266 transitions. [2022-10-16 15:37:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3370 [2022-10-16 15:37:04,946 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:37:04,950 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 15:37:04,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 15:37:04,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __startrek_entry_pt_OSEK_Task_ts1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__startrek_entry_pt_OSEK_Task_ts1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, __startrek_entry_pt_OSEK_Task_ts1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 220 more)] === [2022-10-16 15:37:04,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:37:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1857952458, now seen corresponding path program 1 times [2022-10-16 15:37:04,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:37:04,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727130538] [2022-10-16 15:37:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:37:04,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms