/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.M1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:32:52,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:32:52,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:32:52,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:32:52,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:32:52,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:32:52,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:32:52,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:32:52,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:32:52,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:32:52,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:32:52,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:32:52,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:32:52,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:32:52,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:32:52,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:32:52,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:32:52,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:32:52,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:32:52,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:32:52,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:32:52,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:32:52,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:32:52,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:32:52,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:32:52,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:32:52,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:32:52,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:32:52,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:32:52,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:32:52,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:32:52,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:32:52,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:32:52,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:32:52,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:32:52,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:32:52,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:32:52,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:32:52,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:32:52,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:32:52,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:32:52,273 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 15:32:52,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:32:52,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:32:52,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:32:52,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:32:52,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:32:52,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:32:52,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:32:52,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:32:52,305 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:32:52,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:32:52,306 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:32:52,306 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:32:52,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:32:52,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:32:52,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:32:52,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:32:52,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:32:52,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:32:52,308 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:32:52,308 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:32:52,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:32:52,309 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:32:52,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:32:52,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:32:52,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:32:52,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:32:52,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:32:52,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:32:52,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:32:52,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:32:52,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:32:52,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:32:52,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:32:52,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:32:52,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:32:52,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:32:52,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:32:52,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:32:52,769 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:32:52,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2022-10-16 15:32:52,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/282f83dc1/413651e2c1f443c68adee8badd8af9f1/FLAGafdb89b30 [2022-10-16 15:32:53,573 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:32:53,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2022-10-16 15:32:53,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/282f83dc1/413651e2c1f443c68adee8badd8af9f1/FLAGafdb89b30 [2022-10-16 15:32:53,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/282f83dc1/413651e2c1f443c68adee8badd8af9f1 [2022-10-16 15:32:53,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:32:53,797 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:32:53,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:32:53,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:32:53,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:32:53,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:32:53" (1/1) ... [2022-10-16 15:32:53,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e7633f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:53, skipping insertion in model container [2022-10-16 15:32:53,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:32:53" (1/1) ... [2022-10-16 15:32:53,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:32:53,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:32:54,080 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.M1-2.c[1673,1686] [2022-10-16 15:32:54,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:32:54,527 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:32:54,544 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.M1-2.c[1673,1686] [2022-10-16 15:32:54,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:32:54,809 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:32:54,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54 WrapperNode [2022-10-16 15:32:54,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:32:54,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:32:54,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:32:54,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:32:54,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:54,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:55,071 INFO L138 Inliner]: procedures = 57, calls = 1672, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3775 [2022-10-16 15:32:55,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:32:55,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:32:55,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:32:55,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:32:55,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:55,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:55,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:55,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:55,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:55,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:55,284 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:55,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:55,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:32:55,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:32:55,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:32:55,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:32:55,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (1/1) ... [2022-10-16 15:32:55,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:32:55,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:32:55,379 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 15:32:55,399 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 15:32:55,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:32:55,439 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:32:55,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:32:55,439 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:32:55,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:32:55,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:32:55,439 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:32:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:32:55,440 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:32:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:32:55,440 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:32:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:32:55,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:32:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:32:55,441 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:32:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:32:55,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:32:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:32:55,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:32:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:32:55,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:32:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:32:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:32:55,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:32:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:32:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:32:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:32:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:32:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:32:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:32:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:32:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:32:55,444 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:32:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:32:55,444 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:32:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:32:55,444 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:32:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:32:55,966 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:32:55,970 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:33:02,840 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:33:02,862 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:33:02,862 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:33:02,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:33:02 BoogieIcfgContainer [2022-10-16 15:33:02,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:33:02,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:33:02,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:33:02,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:33:02,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:32:53" (1/3) ... [2022-10-16 15:33:02,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e10f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:33:02, skipping insertion in model container [2022-10-16 15:33:02,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:54" (2/3) ... [2022-10-16 15:33:02,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e10f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:33:02, skipping insertion in model container [2022-10-16 15:33:02,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:33:02" (3/3) ... [2022-10-16 15:33:02,882 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2022-10-16 15:33:02,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:33:02,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-10-16 15:33:03,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:33:03,051 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;@6340196c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:33:03,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-10-16 15:33:03,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 1257 states, 789 states have (on average 1.3422053231939164) internal successors, (1059), 880 states have internal predecessors, (1059), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2022-10-16 15:33:03,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-16 15:33:03,074 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:33:03,075 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 15:33:03,075 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 15:33:03,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:33:03,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1888008798, now seen corresponding path program 1 times [2022-10-16 15:33:03,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:33:03,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135144136] [2022-10-16 15:33:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:33:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 15:33:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:33:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 15:33:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:33:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 15:33:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:33:03,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 15:33:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:33:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 15:33:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:33:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 15:33:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:33:03,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 15:33:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:33:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 15:33:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:33:03,560 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 15:33:03,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 15:33:03,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135144136] [2022-10-16 15:33:03,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135144136] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 15:33:03,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 15:33:03,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 15:33:03,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998982705] [2022-10-16 15:33:03,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 15:33:03,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 15:33:03,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 15:33:03,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 15:33:03,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:33:03,631 INFO L87 Difference]: Start difference. First operand has 1257 states, 789 states have (on average 1.3422053231939164) internal successors, (1059), 880 states have internal predecessors, (1059), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) 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 15:33:03,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 15:33:03,852 INFO L93 Difference]: Finished difference Result 2459 states and 4056 transitions. [2022-10-16 15:33:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 15:33:03,855 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 15:33:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 15:33:03,885 INFO L225 Difference]: With dead ends: 2459 [2022-10-16 15:33:03,886 INFO L226 Difference]: Without dead ends: 1089 [2022-10-16 15:33:03,909 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 15:33:03,914 INFO L413 NwaCegarLoop]: 1790 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, 1790 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 15:33:03,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 15:33:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-10-16 15:33:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1089. [2022-10-16 15:33:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 725 states have (on average 1.296551724137931) internal successors, (940), 765 states have internal predecessors, (940), 339 states have call successors, (339), 15 states have call predecessors, (339), 15 states have return successors, (338), 336 states have call predecessors, (338), 338 states have call successors, (338) [2022-10-16 15:33:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1617 transitions. [2022-10-16 15:33:04,196 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1617 transitions. Word has length 47 [2022-10-16 15:33:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 15:33:04,197 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1617 transitions. [2022-10-16 15:33:04,197 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 15:33:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1617 transitions. [2022-10-16 15:33:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-10-16 15:33:04,225 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:33:04,226 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, 1, 1] [2022-10-16 15:33:04,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 15:33:04,227 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 15:33:04,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:33:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1239748059, now seen corresponding path program 1 times [2022-10-16 15:33:04,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:33:04,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715902014] [2022-10-16 15:33:04,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:33:04,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms