/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_aso.1.M1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 22:00:31,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 22:00:31,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 22:00:31,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 22:00:31,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 22:00:31,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 22:00:31,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 22:00:31,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 22:00:31,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 22:00:31,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 22:00:31,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 22:00:31,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 22:00:31,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 22:00:31,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 22:00:31,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 22:00:31,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 22:00:31,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 22:00:31,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 22:00:31,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 22:00:31,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 22:00:31,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 22:00:31,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 22:00:31,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 22:00:31,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 22:00:31,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 22:00:31,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 22:00:31,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 22:00:31,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 22:00:31,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 22:00:31,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 22:00:31,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 22:00:31,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 22:00:31,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 22:00:31,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 22:00:31,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 22:00:31,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 22:00:31,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 22:00:31,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 22:00:31,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 22:00:31,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 22:00:31,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 22:00:31,602 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 [2022-10-15 22:00:31,632 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 22:00:31,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 22:00:31,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 22:00:31,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 22:00:31,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 22:00:31,635 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 22:00:31,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 22:00:31,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 22:00:31,636 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 22:00:31,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 22:00:31,637 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 22:00:31,637 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 22:00:31,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 22:00:31,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 22:00:31,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 22:00:31,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 22:00:31,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 22:00:31,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 22:00:31,638 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 22:00:31,639 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 22:00:31,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 22:00:31,639 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 22:00:31,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 22:00:31,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 22:00:31,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 22:00:31,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 22:00:31,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 22:00:31,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 22:00:31,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 22:00:31,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 22:00:31,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 22:00:31,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 22:00:31,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 22:00:31,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 22:00:32,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 22:00:32,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 22:00:32,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 22:00:32,108 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 22:00:32,109 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 22:00:32,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-2.c [2022-10-15 22:00:32,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca637936b/d2cdfc04f7814bcebc73b624ed7ca1db/FLAG9c93d3afa [2022-10-15 22:00:32,975 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 22:00:32,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-2.c [2022-10-15 22:00:33,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca637936b/d2cdfc04f7814bcebc73b624ed7ca1db/FLAG9c93d3afa [2022-10-15 22:00:33,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca637936b/d2cdfc04f7814bcebc73b624ed7ca1db [2022-10-15 22:00:33,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 22:00:33,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 22:00:33,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 22:00:33,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 22:00:33,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 22:00:33,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:00:33" (1/1) ... [2022-10-15 22:00:33,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1803f0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:33, skipping insertion in model container [2022-10-15 22:00:33,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:00:33" (1/1) ... [2022-10-15 22:00:33,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 22:00:33,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 22:00:33,639 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_aso.1.M1-2.c[2055,2068] [2022-10-15 22:00:34,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 22:00:34,173 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 22:00:34,189 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_aso.1.M1-2.c[2055,2068] [2022-10-15 22:00:34,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 22:00:34,447 INFO L208 MainTranslator]: Completed translation [2022-10-15 22:00:34,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34 WrapperNode [2022-10-15 22:00:34,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 22:00:34,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 22:00:34,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 22:00:34,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 22:00:34,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:34,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:34,773 INFO L138 Inliner]: procedures = 62, calls = 2058, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4437 [2022-10-15 22:00:34,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 22:00:34,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 22:00:34,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 22:00:34,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 22:00:34,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:34,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:34,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:34,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:35,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:35,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:35,095 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:35,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:35,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 22:00:35,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 22:00:35,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 22:00:35,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 22:00:35,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (1/1) ... [2022-10-15 22:00:35,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 22:00:35,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:00:35,258 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) [2022-10-15 22:00:35,262 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 [2022-10-15 22:00:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 22:00:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-10-15 22:00:35,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-10-15 22:00:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-15 22:00:35,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-15 22:00:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-15 22:00:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-15 22:00:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 22:00:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-15 22:00:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-15 22:00:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-15 22:00:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-15 22:00:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-15 22:00:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-15 22:00:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 22:00:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-15 22:00:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-15 22:00:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-15 22:00:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-15 22:00:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-10-15 22:00:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-10-15 22:00:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 22:00:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 22:00:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 22:00:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 22:00:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-15 22:00:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-15 22:00:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 22:00:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 22:00:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-15 22:00:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-15 22:00:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-15 22:00:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-15 22:00:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-10-15 22:00:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-10-15 22:00:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-15 22:00:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-15 22:00:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 22:00:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 22:00:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 22:00:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 22:00:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 22:00:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-15 22:00:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-15 22:00:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-15 22:00:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-15 22:00:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-15 22:00:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-15 22:00:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-10-15 22:00:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-10-15 22:00:35,980 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 22:00:35,983 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 22:00:44,115 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 22:00:44,133 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 22:00:44,134 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 22:00:44,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:00:44 BoogieIcfgContainer [2022-10-15 22:00:44,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 22:00:44,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 22:00:44,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 22:00:44,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 22:00:44,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:00:33" (1/3) ... [2022-10-15 22:00:44,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cd908c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:00:44, skipping insertion in model container [2022-10-15 22:00:44,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:00:34" (2/3) ... [2022-10-15 22:00:44,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cd908c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:00:44, skipping insertion in model container [2022-10-15 22:00:44,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:00:44" (3/3) ... [2022-10-15 22:00:44,154 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_aso.1.M1-2.c [2022-10-15 22:00:44,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 22:00:44,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-10-15 22:00:44,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 22:00:44,307 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;@1f059605, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 22:00:44,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-10-15 22:00:44,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 1482 states, 919 states have (on average 1.3210010881392817) internal successors, (1214), 1009 states have internal predecessors, (1214), 481 states have call successors, (481), 21 states have call predecessors, (481), 21 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) [2022-10-15 22:00:44,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-15 22:00:44,331 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:00:44,332 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] [2022-10-15 22:00:44,333 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)] === [2022-10-15 22:00:44,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:00:44,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1147060869, now seen corresponding path program 1 times [2022-10-15 22:00:44,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:00:44,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761419389] [2022-10-15 22:00:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:00:44,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:00:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:00:44,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 22:00:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:00:44,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 22:00:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:00:44,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 22:00:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:00:44,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-15 22:00:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:00:44,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-15 22:00:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:00:44,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-15 22:00:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:00:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 22:00:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:00:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-10-15 22:00:44,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:00:44,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761419389] [2022-10-15 22:00:44,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761419389] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:00:44,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 22:00:44,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 22:00:44,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265001385] [2022-10-15 22:00:44,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:00:44,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 22:00:44,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:00:44,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 22:00:44,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 22:00:44,918 INFO L87 Difference]: Start difference. First operand has 1482 states, 919 states have (on average 1.3210010881392817) internal successors, (1214), 1009 states have internal predecessors, (1214), 481 states have call successors, (481), 21 states have call predecessors, (481), 21 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) 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) [2022-10-15 22:00:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:00:45,159 INFO L93 Difference]: Finished difference Result 2909 states and 4807 transitions. [2022-10-15 22:00:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 22:00:45,165 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 [2022-10-15 22:00:45,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:00:45,206 INFO L225 Difference]: With dead ends: 2909 [2022-10-15 22:00:45,206 INFO L226 Difference]: Without dead ends: 1154 [2022-10-15 22:00:45,230 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 [2022-10-15 22:00:45,236 INFO L413 NwaCegarLoop]: 2123 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, 2123 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 [2022-10-15 22:00:45,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 22:00:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-10-15 22:00:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2022-10-15 22:00:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 775 states have (on average 1.3096774193548386) internal successors, (1015), 814 states have internal predecessors, (1015), 349 states have call successors, (349), 20 states have call predecessors, (349), 20 states have return successors, (348), 346 states have call predecessors, (348), 348 states have call successors, (348) [2022-10-15 22:00:45,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1712 transitions. [2022-10-15 22:00:45,539 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1712 transitions. Word has length 47 [2022-10-15 22:00:45,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:00:45,548 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1712 transitions. [2022-10-15 22:00:45,548 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) [2022-10-15 22:00:45,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1712 transitions. [2022-10-15 22:00:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-10-15 22:00:45,582 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:00:45,582 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] [2022-10-15 22:00:45,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 22:00:45,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __startrek_entry_pt_OSEK_Task_ts3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__startrek_entry_pt_OSEK_Task_ts1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, __startrek_entry_pt_OSEK_Task_ts1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-10-15 22:00:45,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:00:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1313308870, now seen corresponding path program 1 times [2022-10-15 22:00:45,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:00:45,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389070652] [2022-10-15 22:00:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:00:45,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms