/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.2.M4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:35:10,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:35:10,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:35:10,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:35:10,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:35:10,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:35:10,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:35:10,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:35:10,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:35:10,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:35:10,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:35:10,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:35:10,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:35:10,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:35:10,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:35:10,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:35:10,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:35:10,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:35:10,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:35:10,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:35:10,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:35:10,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:35:10,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:35:10,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:35:10,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:35:10,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:35:10,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:35:10,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:35:10,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:35:10,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:35:10,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:35:10,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:35:10,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:35:10,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:35:10,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:35:10,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:35:10,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:35:10,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:35:10,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:35:10,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:35:10,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:35:10,979 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 15:35:11,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:35:11,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:35:11,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:35:11,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:35:11,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:35:11,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:35:11,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:35:11,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:35:11,025 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:35:11,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:35:11,026 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:35:11,026 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:35:11,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:35:11,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:35:11,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:35:11,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:35:11,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:35:11,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:35:11,027 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:35:11,027 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:35:11,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:35:11,028 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:35:11,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:35:11,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:35:11,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:35:11,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:35:11,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:35:11,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:35:11,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:35:11,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:35:11,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:35:11,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:35:11,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:35:11,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:35:11,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:35:11,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:35:11,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:35:11,448 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:35:11,449 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:35:11,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2022-10-16 15:35:11,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d7bf832/a9d22cedc5c742259ad617fed9e5d546/FLAG0e319c2c9 [2022-10-16 15:35:12,619 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:35:12,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2022-10-16 15:35:12,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d7bf832/a9d22cedc5c742259ad617fed9e5d546/FLAG0e319c2c9 [2022-10-16 15:35:12,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d7bf832/a9d22cedc5c742259ad617fed9e5d546 [2022-10-16 15:35:12,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:35:12,918 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:35:12,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:35:12,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:35:12,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:35:12,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:35:12" (1/1) ... [2022-10-16 15:35:12,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23779ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:12, skipping insertion in model container [2022-10-16 15:35:12,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:35:12" (1/1) ... [2022-10-16 15:35:12,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:35:13,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:35:13,525 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.2.M4-2.c[2278,2291] [2022-10-16 15:35:15,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:35:15,124 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:35:15,149 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.2.M4-2.c[2278,2291] [2022-10-16 15:35:16,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:35:16,275 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:35:16,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16 WrapperNode [2022-10-16 15:35:16,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:35:16,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:35:16,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:35:16,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:35:16,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:16,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:18,367 INFO L138 Inliner]: procedures = 62, calls = 18852, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 41167 [2022-10-16 15:35:18,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:35:18,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:35:18,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:35:18,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:35:18,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:18,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:18,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:18,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:20,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:20,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:20,300 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:20,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:20,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:35:20,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:35:20,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:35:20,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:35:20,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (1/1) ... [2022-10-16 15:35:20,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:35:20,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:35:20,613 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 15:35:20,620 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 15:35:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:35:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:35:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:35:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:35:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:35:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:35:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:35:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:35:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:35:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:35:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-10-16 15:35:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-10-16 15:35:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:35:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:35:20,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:35:20,687 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:35:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:35:20,687 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:35:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:35:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:35:20,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:35:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:35:20,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:35:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:35:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:35:20,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:35:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:35:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-16 15:35:20,689 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-16 15:35:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:35:20,689 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:35:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-16 15:35:20,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-16 15:35:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:35:20,690 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:35:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:35:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:35:20,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:35:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:35:20,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:35:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:35:20,691 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:35:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:35:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:35:22,471 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:35:22,474 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:36:25,607 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:36:25,671 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:36:25,672 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:36:25,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:36:25 BoogieIcfgContainer [2022-10-16 15:36:25,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:36:25,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:36:25,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:36:25,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:36:25,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:35:12" (1/3) ... [2022-10-16 15:36:25,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b43e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:36:25, skipping insertion in model container [2022-10-16 15:36:25,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:35:16" (2/3) ... [2022-10-16 15:36:25,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b43e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:36:25, skipping insertion in model container [2022-10-16 15:36:25,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:36:25" (3/3) ... [2022-10-16 15:36:25,697 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-2.c [2022-10-16 15:36:25,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:36:25,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 222 error locations. [2022-10-16 15:36:26,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:36:26,045 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;@3ab1883c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:36:26,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 222 error locations. [2022-10-16 15:36:26,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 12932 states, 8348 states have (on average 1.3296597987541927) internal successors, (11100), 8682 states have internal predecessors, (11100), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) [2022-10-16 15:36:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 15:36:26,101 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:36:26,101 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 15:36:26,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__startrek_entry_pt_OSEK_Task_ts1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, __startrek_entry_pt_OSEK_Task_ts1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 220 more)] === [2022-10-16 15:36:26,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:36:26,108 INFO L85 PathProgramCache]: Analyzing trace with hash 872895634, now seen corresponding path program 1 times [2022-10-16 15:36:26,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:36:26,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139932216] [2022-10-16 15:36:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:36:26,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 15:36:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 15:36:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:27,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 15:36:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 15:36:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:27,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 15:36:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 15:36:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:27,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 15:36:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:36:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-16 15:36:27,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 15:36:27,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139932216] [2022-10-16 15:36:27,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139932216] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 15:36:27,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 15:36:27,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 15:36:27,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818649873] [2022-10-16 15:36:27,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 15:36:27,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 15:36:27,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 15:36:27,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 15:36:27,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:36:27,129 INFO L87 Difference]: Start difference. First operand has 12932 states, 8348 states have (on average 1.3296597987541927) internal successors, (11100), 8682 states have internal predecessors, (11100), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 15:36:27,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 15:36:27,927 INFO L93 Difference]: Finished difference Result 25647 states and 43891 transitions. [2022-10-16 15:36:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 15:36:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2022-10-16 15:36:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 15:36:28,073 INFO L225 Difference]: With dead ends: 25647 [2022-10-16 15:36:28,073 INFO L226 Difference]: Without dead ends: 11846 [2022-10-16 15:36:28,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:36:28,550 INFO L413 NwaCegarLoop]: 19571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19571 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 15:36:28,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19571 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 15:36:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2022-10-16 15:36:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 11846. [2022-10-16 15:36:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11846 states, 7906 states have (on average 1.3206425499620542) internal successors, (10441), 8027 states have internal predecessors, (10441), 3913 states have call successors, (3913), 17 states have call predecessors, (3913), 17 states have return successors, (3912), 3910 states have call predecessors, (3912), 3912 states have call successors, (3912) [2022-10-16 15:36:36,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11846 states to 11846 states and 18266 transitions. [2022-10-16 15:36:36,607 INFO L78 Accepts]: Start accepts. Automaton has 11846 states and 18266 transitions. Word has length 41 [2022-10-16 15:36:36,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 15:36:36,608 INFO L495 AbstractCegarLoop]: Abstraction has 11846 states and 18266 transitions. [2022-10-16 15:36:36,610 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 15:36:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 11846 states and 18266 transitions. [2022-10-16 15:36:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3370 [2022-10-16 15:36:37,192 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:36:37,196 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 15:36:37,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 15:36:37,207 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 15:36:37,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:36:37,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1857952458, now seen corresponding path program 1 times [2022-10-16 15:36:37,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:36:37,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824705321] [2022-10-16 15:36:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:36:37,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms