/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.1.M4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:33:36,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:33:36,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:33:36,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:33:36,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:33:36,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:33:36,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:33:36,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:33:36,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:33:36,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:33:36,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:33:36,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:33:36,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:33:36,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:33:36,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:33:36,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:33:36,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:33:36,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:33:36,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:33:36,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:33:36,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:33:36,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:33:36,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:33:36,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:33:36,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:33:36,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:33:36,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:33:36,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:33:36,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:33:36,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:33:36,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:33:36,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:33:36,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:33:36,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:33:36,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:33:36,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:33:36,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:33:36,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:33:36,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:33:36,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:33:36,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:33:36,275 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 15:33:36,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:33:36,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:33:36,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:33:36,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:33:36,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:33:36,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:33:36,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:33:36,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:33:36,308 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:33:36,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:33:36,308 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:33:36,308 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:33:36,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:33:36,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:33:36,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:33:36,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:33:36,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:33:36,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:33:36,310 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:33:36,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:33:36,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:33:36,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:33:36,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:33:36,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:33:36,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:33:36,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:33:36,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:33:36,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:33:36,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:33:36,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:33:36,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:33:36,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:33:36,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:33:36,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:33:36,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:33:36,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:33:36,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:33:36,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:33:36,702 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:33:36,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c [2022-10-16 15:33:36,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a219f78ab/86d4207a3b7e47d282f71a11f5005bf4/FLAG3a2a5a6f2 [2022-10-16 15:33:37,865 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:33:37,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c [2022-10-16 15:33:37,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a219f78ab/86d4207a3b7e47d282f71a11f5005bf4/FLAG3a2a5a6f2 [2022-10-16 15:33:38,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a219f78ab/86d4207a3b7e47d282f71a11f5005bf4 [2022-10-16 15:33:38,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:33:38,211 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:33:38,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:33:38,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:33:38,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:33:38,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:33:38" (1/1) ... [2022-10-16 15:33:38,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5977cf19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:38, skipping insertion in model container [2022-10-16 15:33:38,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:33:38" (1/1) ... [2022-10-16 15:33:38,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:33:38,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:33:38,698 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.1.M4-2.c[1674,1687] [2022-10-16 15:33:39,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:33:39,983 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:33:39,998 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.1.M4-2.c[1674,1687] [2022-10-16 15:33:41,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:33:41,083 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:33:41,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41 WrapperNode [2022-10-16 15:33:41,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:33:41,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:33:41,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:33:41,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:33:41,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:41,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:43,305 INFO L138 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39625 [2022-10-16 15:33:43,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:33:43,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:33:43,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:33:43,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:33:43,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:43,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:43,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:43,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:44,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:44,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:44,840 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:44,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:45,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:33:45,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:33:45,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:33:45,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:33:45,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (1/1) ... [2022-10-16 15:33:45,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:33:45,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:33:45,114 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 15:33:45,138 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 15:33:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:33:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:33:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:33:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:33:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:33:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:33:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:33:45,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:33:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:33:45,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:33:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:33:45,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:33:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:33:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:33:45,184 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:33:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:33:45,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:33:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:33:45,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:33:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:33:45,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:33:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:33:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:33:45,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:33:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:33:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:33:45,185 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:33:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:33:45,186 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:33:45,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:33:45,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:33:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:33:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:33:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:33:46,917 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:33:46,920 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:34:50,882 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:34:51,071 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:34:51,071 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:34:51,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:34:51 BoogieIcfgContainer [2022-10-16 15:34:51,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:34:51,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:34:51,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:34:51,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:34:51,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:33:38" (1/3) ... [2022-10-16 15:34:51,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151b0499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:34:51, skipping insertion in model container [2022-10-16 15:34:51,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:41" (2/3) ... [2022-10-16 15:34:51,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151b0499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:34:51, skipping insertion in model container [2022-10-16 15:34:51,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:34:51" (3/3) ... [2022-10-16 15:34:51,096 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-2.c [2022-10-16 15:34:51,118 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:34:51,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 222 error locations. [2022-10-16 15:34:51,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:34:51,469 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;@7e758c0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:34:51,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 222 error locations. [2022-10-16 15:34:51,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 12456 states, 8100 states have (on average 1.338148148148148) internal successors, (10839), 8434 states have internal predecessors, (10839), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2022-10-16 15:34:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 15:34:51,522 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:34:51,523 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 15:34:51,524 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 15:34:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:34:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1720776508, now seen corresponding path program 1 times [2022-10-16 15:34:51,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:34:51,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648577607] [2022-10-16 15:34:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:34:51,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 15:34:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:52,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 15:34:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 15:34:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 15:34:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 15:34:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:52,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 15:34:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 15:34:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:52,489 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 15:34:52,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 15:34:52,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648577607] [2022-10-16 15:34:52,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648577607] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 15:34:52,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 15:34:52,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 15:34:52,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654761118] [2022-10-16 15:34:52,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 15:34:52,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 15:34:52,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 15:34:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 15:34:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:34:52,572 INFO L87 Difference]: Start difference. First operand has 12456 states, 8100 states have (on average 1.338148148148148) internal successors, (10839), 8434 states have internal predecessors, (10839), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) 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 15:34:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 15:34:53,385 INFO L93 Difference]: Finished difference Result 24695 states and 42246 transitions. [2022-10-16 15:34:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 15:34:53,389 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 15:34:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 15:34:53,535 INFO L225 Difference]: With dead ends: 24695 [2022-10-16 15:34:53,535 INFO L226 Difference]: Without dead ends: 11802 [2022-10-16 15:34:53,651 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 15:34:53,659 INFO L413 NwaCegarLoop]: 18860 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, 18860 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 15:34:53,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18860 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 15:34:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11802 states. [2022-10-16 15:35:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11802 to 11802. [2022-10-16 15:35:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11802 states, 7874 states have (on average 1.3202946405892813) internal successors, (10396), 7995 states have internal predecessors, (10396), 3903 states have call successors, (3903), 15 states have call predecessors, (3903), 15 states have return successors, (3902), 3900 states have call predecessors, (3902), 3902 states have call successors, (3902) [2022-10-16 15:35:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11802 states to 11802 states and 18201 transitions. [2022-10-16 15:35:02,111 INFO L78 Accepts]: Start accepts. Automaton has 11802 states and 18201 transitions. Word has length 41 [2022-10-16 15:35:02,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 15:35:02,112 INFO L495 AbstractCegarLoop]: Abstraction has 11802 states and 18201 transitions. [2022-10-16 15:35:02,112 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 15:35:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 11802 states and 18201 transitions. [2022-10-16 15:35:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3365 [2022-10-16 15:35:02,528 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:35:02,532 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] [2022-10-16 15:35:02,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 15:35:02,533 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 15:35:02,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:35:02,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1037924683, now seen corresponding path program 1 times [2022-10-16 15:35:02,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:35:02,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632977446] [2022-10-16 15:35:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:35:02,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms