/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.M1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:32:43,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:32:43,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:32:43,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:32:43,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:32:43,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:32:43,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:32:43,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:32:43,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:32:43,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:32:43,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:32:43,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:32:43,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:32:43,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:32:43,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:32:43,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:32:43,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:32:43,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:32:43,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:32:43,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:32:43,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:32:43,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:32:43,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:32:43,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:32:43,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:32:43,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:32:43,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:32:43,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:32:43,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:32:43,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:32:43,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:32:43,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:32:43,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:32:43,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:32:43,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:32:43,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:32:43,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:32:43,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:32:43,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:32:43,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:32:43,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:32:43,524 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 15:32:43,587 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:32:43,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:32:43,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:32:43,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:32:43,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:32:43,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:32:43,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:32:43,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:32:43,593 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:32:43,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:32:43,594 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:32:43,595 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:32:43,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:32:43,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:32:43,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:32:43,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:32:43,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:32:43,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:32:43,596 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:32:43,597 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:32:43,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:32:43,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:32:43,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:32:43,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:32:43,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:32:43,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:32:43,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:32:43,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:32:43,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:32:43,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:32:43,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:32:43,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:32:43,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:32:43,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:32:44,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:32:44,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:32:44,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:32:44,028 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:32:44,028 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:32:44,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c [2022-10-16 15:32:44,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be48fc8b5/ad10a133594f4255a85fcacfd6080685/FLAG9d67f4083 [2022-10-16 15:32:44,829 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:32:44,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c [2022-10-16 15:32:44,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be48fc8b5/ad10a133594f4255a85fcacfd6080685/FLAG9d67f4083 [2022-10-16 15:32:44,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be48fc8b5/ad10a133594f4255a85fcacfd6080685 [2022-10-16 15:32:44,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:32:44,996 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:32:45,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:32:45,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:32:45,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:32:45,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:32:44" (1/1) ... [2022-10-16 15:32:45,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67208e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45, skipping insertion in model container [2022-10-16 15:32:45,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:32:44" (1/1) ... [2022-10-16 15:32:45,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:32:45,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:32:45,269 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.M1-1.c[1674,1687] [2022-10-16 15:32:45,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:32:45,714 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:32:45,744 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.M1-1.c[1674,1687] [2022-10-16 15:32:45,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:32:45,956 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:32:45,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45 WrapperNode [2022-10-16 15:32:45,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:32:45,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:32:45,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:32:45,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:32:45,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,186 INFO L138 Inliner]: procedures = 57, calls = 1672, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3775 [2022-10-16 15:32:46,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:32:46,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:32:46,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:32:46,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:32:46,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:32:46,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:32:46,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:32:46,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:32:46,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (1/1) ... [2022-10-16 15:32:46,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:32:46,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:32:46,524 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 15:32:46,603 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 15:32:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:32:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:32:46,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:32:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:32:46,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:32:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:32:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:32:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:32:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:32:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:32:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:32:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:32:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:32:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:32:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:32:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:32:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:32:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:32:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:32:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:32:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:32:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:32:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:32:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:32:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:32:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:32:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:32:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:32:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:32:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:32:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:32:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:32:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:32:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:32:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:32:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:32:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:32:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:32:47,117 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:32:47,120 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:32:53,987 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:32:54,007 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:32:54,007 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:32:54,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:32:54 BoogieIcfgContainer [2022-10-16 15:32:54,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:32:54,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:32:54,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:32:54,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:32:54,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:32:44" (1/3) ... [2022-10-16 15:32:54,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76112819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:32:54, skipping insertion in model container [2022-10-16 15:32:54,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:32:45" (2/3) ... [2022-10-16 15:32:54,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76112819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:32:54, skipping insertion in model container [2022-10-16 15:32:54,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:32:54" (3/3) ... [2022-10-16 15:32:54,021 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-1.c [2022-10-16 15:32:54,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:32:54,043 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-10-16 15:32:54,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:32:54,144 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;@534c6282, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:32:54,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-10-16 15:32:54,155 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 15:32:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-16 15:32:54,166 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:32:54,167 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 15:32:54,167 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 15:32:54,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:32:54,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1888008798, now seen corresponding path program 1 times [2022-10-16 15:32:54,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:32:54,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377926105] [2022-10-16 15:32:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:32:54,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 15:32:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:32:54,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 15:32:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:32:54,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 15:32:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:32:54,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 15:32:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:32:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 15:32:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:32:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 15:32:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:32:54,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 15:32:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:32:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 15:32:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:32:54,643 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 15:32:54,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 15:32:54,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377926105] [2022-10-16 15:32:54,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377926105] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 15:32:54,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 15:32:54,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 15:32:54,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835236550] [2022-10-16 15:32:54,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 15:32:54,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 15:32:54,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 15:32:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 15:32:54,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:32:54,691 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 15:32:54,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 15:32:54,976 INFO L93 Difference]: Finished difference Result 2459 states and 4056 transitions. [2022-10-16 15:32:54,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 15:32:54,979 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 15:32:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 15:32:55,041 INFO L225 Difference]: With dead ends: 2459 [2022-10-16 15:32:55,041 INFO L226 Difference]: Without dead ends: 1089 [2022-10-16 15:32:55,065 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 15:32:55,070 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 15:32:55,072 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 15:32:55,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-10-16 15:32:55,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1089. [2022-10-16 15:32:55,392 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 15:32:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1617 transitions. [2022-10-16 15:32:55,412 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1617 transitions. Word has length 47 [2022-10-16 15:32:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 15:32:55,412 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1617 transitions. [2022-10-16 15:32:55,413 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 15:32:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1617 transitions. [2022-10-16 15:32:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-10-16 15:32:55,451 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:32:55,451 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 15:32:55,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 15:32:55,453 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 15:32:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:32:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1239748059, now seen corresponding path program 1 times [2022-10-16 15:32:55,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:32:55,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193326004] [2022-10-16 15:32:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:32:55,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms