/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.M4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:33:16,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:33:16,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:33:16,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:33:16,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:33:16,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:33:16,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:33:16,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:33:16,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:33:16,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:33:16,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:33:16,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:33:16,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:33:16,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:33:16,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:33:16,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:33:16,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:33:16,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:33:16,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:33:16,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:33:16,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:33:16,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:33:16,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:33:16,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:33:16,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:33:16,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:33:16,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:33:16,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:33:16,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:33:16,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:33:16,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:33:16,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:33:16,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:33:16,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:33:16,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:33:16,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:33:16,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:33:16,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:33:16,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:33:16,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:33:16,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:33:16,932 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 15:33:16,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:33:16,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:33:16,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:33:16,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:33:16,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:33:16,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:33:16,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:33:16,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:33:16,966 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:33:16,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:33:16,967 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:33:16,967 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:33:16,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:33:16,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:33:16,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:33:16,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:33:16,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:33:16,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:33:16,968 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:33:16,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:33:16,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:33:16,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:33:16,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:33:16,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:33:16,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:33:16,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:33:16,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:33:16,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:33:16,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:33:16,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:33:16,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:33:16,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:33:16,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:33:16,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:33:17,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:33:17,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:33:17,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:33:17,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:33:17,351 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:33:17,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-10-16 15:33:17,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79ae04fe/55030a21faea4ced9bb6c1972aafeba6/FLAG81d0474fb [2022-10-16 15:33:18,470 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:33:18,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-10-16 15:33:18,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79ae04fe/55030a21faea4ced9bb6c1972aafeba6/FLAG81d0474fb [2022-10-16 15:33:18,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79ae04fe/55030a21faea4ced9bb6c1972aafeba6 [2022-10-16 15:33:18,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:33:18,920 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:33:18,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:33:18,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:33:18,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:33:18,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:33:18" (1/1) ... [2022-10-16 15:33:18,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5a8cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:18, skipping insertion in model container [2022-10-16 15:33:18,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:33:18" (1/1) ... [2022-10-16 15:33:18,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:33:19,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:33:19,454 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.M4-1.c[1673,1686] [2022-10-16 15:33:20,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:33:20,751 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:33:20,780 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.M4-1.c[1673,1686] [2022-10-16 15:33:21,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:33:21,775 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:33:21,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21 WrapperNode [2022-10-16 15:33:21,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:33:21,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:33:21,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:33:21,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:33:21,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:22,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:24,068 INFO L138 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39625 [2022-10-16 15:33:24,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:33:24,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:33:24,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:33:24,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:33:24,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:24,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:24,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:24,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:25,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:25,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:25,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:25,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:25,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:33:25,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:33:25,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:33:25,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:33:25,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (1/1) ... [2022-10-16 15:33:25,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:33:26,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:33:26,017 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 15:33:26,040 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 15:33:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:33:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:33:26,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:33:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:33:26,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:33:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:33:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:33:26,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:33:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:33:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:33:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:33:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:33:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:33:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:33:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:33:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:33:26,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:33:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:33:26,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:33:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:33:26,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:33:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:33:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:33:26,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:33:26,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:33:26,084 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:33:26,084 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:33:26,084 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:33:26,084 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:33:26,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:33:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:33:26,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:33:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:33:26,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:33:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:33:26,085 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:33:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:33:26,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:33:27,691 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:33:27,694 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:34:28,272 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:34:28,329 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:34:28,329 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:34:28,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:34:28 BoogieIcfgContainer [2022-10-16 15:34:28,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:34:28,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:34:28,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:34:28,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:34:28,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:33:18" (1/3) ... [2022-10-16 15:34:28,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba02e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:34:28, skipping insertion in model container [2022-10-16 15:34:28,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:33:21" (2/3) ... [2022-10-16 15:34:28,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba02e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:34:28, skipping insertion in model container [2022-10-16 15:34:28,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:34:28" (3/3) ... [2022-10-16 15:34:28,352 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c [2022-10-16 15:34:28,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:34:28,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 222 error locations. [2022-10-16 15:34:28,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:34:28,660 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;@76187a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:34:28,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 222 error locations. [2022-10-16 15:34:28,705 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 15:34:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 15:34:28,715 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:34:28,716 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 15:34:28,717 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 15:34:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:34:28,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1720776508, now seen corresponding path program 1 times [2022-10-16 15:34:28,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:34:28,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015633755] [2022-10-16 15:34:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:34:28,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 15:34:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:29,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 15:34:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:29,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 15:34:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:29,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 15:34:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:29,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 15:34:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 15:34:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:29,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 15:34:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:29,637 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 15:34:29,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 15:34:29,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015633755] [2022-10-16 15:34:29,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015633755] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 15:34:29,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 15:34:29,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 15:34:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88573835] [2022-10-16 15:34:29,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 15:34:29,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 15:34:29,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 15:34:29,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 15:34:29,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:34:29,718 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 15:34:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 15:34:30,659 INFO L93 Difference]: Finished difference Result 24695 states and 42246 transitions. [2022-10-16 15:34:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 15:34:30,664 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 15:34:30,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 15:34:30,812 INFO L225 Difference]: With dead ends: 24695 [2022-10-16 15:34:30,812 INFO L226 Difference]: Without dead ends: 11802 [2022-10-16 15:34:30,926 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 15:34:30,931 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 15:34:30,933 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 15:34:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11802 states. [2022-10-16 15:34:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11802 to 11802. [2022-10-16 15:34:38,917 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 15:34:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11802 states to 11802 states and 18201 transitions. [2022-10-16 15:34:38,997 INFO L78 Accepts]: Start accepts. Automaton has 11802 states and 18201 transitions. Word has length 41 [2022-10-16 15:34:38,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 15:34:38,999 INFO L495 AbstractCegarLoop]: Abstraction has 11802 states and 18201 transitions. [2022-10-16 15:34:39,000 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 15:34:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 11802 states and 18201 transitions. [2022-10-16 15:34:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3365 [2022-10-16 15:34:39,435 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:34:39,439 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 15:34:39,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 15:34:39,440 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 15:34:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:34:39,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1037924683, now seen corresponding path program 1 times [2022-10-16 15:34:39,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:34:39,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689444109] [2022-10-16 15:34:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:34:39,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms