/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.M1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:35:20,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:35:20,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:35:20,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:35:20,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:35:20,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:35:20,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:35:20,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:35:20,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:35:21,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:35:21,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:35:21,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:35:21,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:35:21,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:35:21,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:35:21,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:35:21,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:35:21,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:35:21,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:35:21,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:35:21,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:35:21,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:35:21,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:35:21,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:35:21,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:35:21,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:35:21,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:35:21,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:35:21,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:35:21,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:35:21,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:35:21,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:35:21,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:35:21,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:35:21,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:35:21,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:35:21,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:35:21,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:35:21,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:35:21,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:35:21,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:35:21,067 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 15:35:21,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:35:21,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:35:21,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:35:21,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:35:21,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:35:21,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:35:21,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:35:21,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:35:21,099 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:35:21,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:35:21,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:35:21,100 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:35:21,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:35:21,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:35:21,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:35:21,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:35:21,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:35:21,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:35:21,101 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:35:21,101 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:35:21,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:35:21,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:35:21,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:35:21,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:35:21,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:35:21,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:35:21,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:35:21,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:35:21,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:35:21,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:35:21,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:35:21,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:35:21,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:35:21,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:35:21,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:35:21,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:35:21,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:35:21,508 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:35:21,508 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:35:21,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c [2022-10-16 15:35:21,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62277206b/be24857c2dc540ec9d87c849cd670780/FLAGd1ebd3902 [2022-10-16 15:35:22,392 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:35:22,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c [2022-10-16 15:35:22,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62277206b/be24857c2dc540ec9d87c849cd670780/FLAGd1ebd3902 [2022-10-16 15:35:22,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62277206b/be24857c2dc540ec9d87c849cd670780 [2022-10-16 15:35:22,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:35:22,603 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:35:22,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:35:22,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:35:22,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:35:22,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:35:22" (1/1) ... [2022-10-16 15:35:22,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca9bae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:22, skipping insertion in model container [2022-10-16 15:35:22,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:35:22" (1/1) ... [2022-10-16 15:35:22,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:35:22,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:35:22,884 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.M1.c[2017,2030] [2022-10-16 15:35:23,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:35:23,401 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:35:23,419 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.M1.c[2017,2030] [2022-10-16 15:35:23,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:35:23,687 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:35:23,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23 WrapperNode [2022-10-16 15:35:23,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:35:23,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:35:23,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:35:23,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:35:23,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:23,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:23,973 INFO L138 Inliner]: procedures = 62, calls = 1929, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 4183 [2022-10-16 15:35:23,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:35:23,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:35:23,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:35:23,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:35:23,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:23,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:24,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:24,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:24,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:24,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:24,197 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:24,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:24,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:35:24,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:35:24,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:35:24,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:35:24,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (1/1) ... [2022-10-16 15:35:24,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:35:24,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:35:24,280 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 15:35:24,299 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 15:35:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:35:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:35:24,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:35:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:35:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:35:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:35:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:35:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:35:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:35:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:35:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-10-16 15:35:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-10-16 15:35:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:35:24,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:35:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:35:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:35:24,426 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:35:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:35:24,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:35:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:35:24,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:35:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:35:24,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:35:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:35:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:35:24,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:35:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:35:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-16 15:35:24,428 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-16 15:35:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:35:24,429 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:35:24,429 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-16 15:35:24,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-16 15:35:24,429 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:35:24,429 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:35:24,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:35:24,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:35:24,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:35:24,430 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:35:24,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:35:24,430 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:35:24,430 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:35:24,430 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:35:24,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:35:24,964 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:35:24,967 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:35:32,230 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:35:32,263 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:35:32,263 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:35:32,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:35:32 BoogieIcfgContainer [2022-10-16 15:35:32,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:35:32,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:35:32,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:35:32,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:35:32,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:35:22" (1/3) ... [2022-10-16 15:35:32,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6934d4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:35:32, skipping insertion in model container [2022-10-16 15:35:32,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:23" (2/3) ... [2022-10-16 15:35:32,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6934d4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:35:32, skipping insertion in model container [2022-10-16 15:35:32,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:35:32" (3/3) ... [2022-10-16 15:35:32,284 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.3.M1.c [2022-10-16 15:35:32,307 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:35:32,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-10-16 15:35:32,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:35:32,440 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;@101d7d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:35:32,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-10-16 15:35:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 1409 states, 875 states have (on average 1.3234285714285714) internal successors, (1158), 965 states have internal predecessors, (1158), 455 states have call successors, (455), 18 states have call predecessors, (455), 18 states have return successors, (455), 453 states have call predecessors, (455), 455 states have call successors, (455) [2022-10-16 15:35:32,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-16 15:35:32,474 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:35:32,475 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 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 15:35:32,476 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 58 more)] === [2022-10-16 15:35:32,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:35:32,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1948194178, now seen corresponding path program 1 times [2022-10-16 15:35:32,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:35:32,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550501507] [2022-10-16 15:35:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:35:32,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 15:35:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:35:32,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 15:35:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:35:32,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 15:35:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:35:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 15:35:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:35:32,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 15:35:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:35:32,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 15:35:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:35:32,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 15:35:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:35:32,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 15:35:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:35:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-10-16 15:35:32,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 15:35:32,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550501507] [2022-10-16 15:35:32,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550501507] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 15:35:32,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 15:35:32,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 15:35:32,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104321273] [2022-10-16 15:35:32,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 15:35:32,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 15:35:32,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 15:35:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 15:35:33,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:35:33,030 INFO L87 Difference]: Start difference. First operand has 1409 states, 875 states have (on average 1.3234285714285714) internal successors, (1158), 965 states have internal predecessors, (1158), 455 states have call successors, (455), 18 states have call predecessors, (455), 18 states have return successors, (455), 453 states have call predecessors, (455), 455 states have call successors, (455) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 15:35:33,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 15:35:33,294 INFO L93 Difference]: Finished difference Result 2763 states and 4567 transitions. [2022-10-16 15:35:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 15:35:33,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-10-16 15:35:33,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 15:35:33,335 INFO L225 Difference]: With dead ends: 2763 [2022-10-16 15:35:33,335 INFO L226 Difference]: Without dead ends: 1133 [2022-10-16 15:35:33,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 15:35:33,365 INFO L413 NwaCegarLoop]: 2015 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, 2015 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 15:35:33,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 15:35:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-10-16 15:35:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2022-10-16 15:35:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 757 states have (on average 1.3011889035667108) internal successors, (985), 796 states have internal predecessors, (985), 349 states have call successors, (349), 17 states have call predecessors, (349), 17 states have return successors, (348), 346 states have call predecessors, (348), 348 states have call successors, (348) [2022-10-16 15:35:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1682 transitions. [2022-10-16 15:35:33,784 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1682 transitions. Word has length 47 [2022-10-16 15:35:33,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 15:35:33,785 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1682 transitions. [2022-10-16 15:35:33,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 15:35:33,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1682 transitions. [2022-10-16 15:35:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-10-16 15:35:33,807 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:35:33,808 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:33,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 15:35:33,812 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 58 more)] === [2022-10-16 15:35:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:35:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1324082298, now seen corresponding path program 1 times [2022-10-16 15:35:33,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:35:33,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943917331] [2022-10-16 15:35:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:35:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms