/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.2.M4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:30:12,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:30:12,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:30:12,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:30:12,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:30:12,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:30:12,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:30:12,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:30:12,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:30:12,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:30:12,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:30:12,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:30:12,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:30:12,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:30:12,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:30:12,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:30:12,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:30:12,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:30:12,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:30:12,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:30:12,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:30:12,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:30:12,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:30:12,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:30:12,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:30:12,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:30:12,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:30:12,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:30:12,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:30:12,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:30:12,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:30:12,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:30:12,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:30:12,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:30:12,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:30:12,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:30:12,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:30:12,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:30:12,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:30:12,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:30:12,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:30:12,782 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 15:30:12,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:30:12,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:30:12,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:30:12,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:30:12,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:30:12,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:30:12,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:30:12,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:30:12,849 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:30:12,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:30:12,851 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:30:12,851 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:30:12,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:30:12,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:30:12,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:30:12,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:30:12,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:30:12,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:30:12,852 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:30:12,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:30:12,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:30:12,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:30:12,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:30:12,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:30:12,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:30:12,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:30:12,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:30:12,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:30:12,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:30:12,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:30:12,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:30:12,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:30:12,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:30:12,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:30:13,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:30:13,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:30:13,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:30:13,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:30:13,274 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:30:13,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-2.c [2022-10-16 15:30:13,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e6bf730/76db70aae0a94491bcda48977b2d747a/FLAG24a32728d [2022-10-16 15:30:14,793 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:30:14,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-2.c [2022-10-16 15:30:14,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e6bf730/76db70aae0a94491bcda48977b2d747a/FLAG24a32728d [2022-10-16 15:30:15,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e6bf730/76db70aae0a94491bcda48977b2d747a [2022-10-16 15:30:15,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:30:15,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:30:15,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:30:15,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:30:15,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:30:15,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:30:15" (1/1) ... [2022-10-16 15:30:15,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d94b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:15, skipping insertion in model container [2022-10-16 15:30:15,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:30:15" (1/1) ... [2022-10-16 15:30:15,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:30:15,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:30:15,985 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.2.M4-2.c[2320,2333] [2022-10-16 15:30:17,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:30:17,674 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:30:17,710 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.2.M4-2.c[2320,2333] [2022-10-16 15:30:19,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:30:19,247 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:30:19,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19 WrapperNode [2022-10-16 15:30:19,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:30:19,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:30:19,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:30:19,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:30:19,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:19,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:22,199 INFO L138 Inliner]: procedures = 72, calls = 21416, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 46104 [2022-10-16 15:30:22,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:30:22,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:30:22,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:30:22,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:30:22,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:22,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:22,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:22,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:23,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:23,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:24,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:24,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:24,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:30:24,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:30:24,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:30:24,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:30:24,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (1/1) ... [2022-10-16 15:30:24,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:30:24,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:30:24,454 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 15:30:24,481 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 15:30:24,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:30:24,526 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_trans [2022-10-16 15:30:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_trans [2022-10-16 15:30:24,526 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-10-16 15:30:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-10-16 15:30:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:30:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:30:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:30:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:30:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:30:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:30:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:30:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:30:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:30:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-10-16 15:30:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-10-16 15:30:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:30:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:30:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:30:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:30:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:30:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:30:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:30:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-10-16 15:30:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-10-16 15:30:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-10-16 15:30:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-10-16 15:30:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:30:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:30:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:30:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:30:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-16 15:30:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-16 15:30:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:30:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:30:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-16 15:30:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-16 15:30:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:30:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:30:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-10-16 15:30:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-10-16 15:30:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-16 15:30:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-16 15:30:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:30:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:30:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:30:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:30:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:30:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:30:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:30:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:30:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:30:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:30:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:30:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-10-16 15:30:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-10-16 15:30:26,633 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:30:26,636 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:34:13,301 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:34:13,364 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:34:13,364 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:34:13,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:34:13 BoogieIcfgContainer [2022-10-16 15:34:13,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:34:13,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:34:13,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:34:13,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:34:13,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:30:15" (1/3) ... [2022-10-16 15:34:13,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea45e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:34:13, skipping insertion in model container [2022-10-16 15:34:13,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:30:19" (2/3) ... [2022-10-16 15:34:13,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea45e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:34:13, skipping insertion in model container [2022-10-16 15:34:13,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:34:13" (3/3) ... [2022-10-16 15:34:13,389 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_aso.2.M4-2.c [2022-10-16 15:34:13,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:34:13,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 226 error locations. [2022-10-16 15:34:13,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:34:13,710 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;@6154219c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:34:13,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 226 error locations. [2022-10-16 15:34:13,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 13688 states, 8753 states have (on average 1.3190905975094254) internal successors, (11546), 9091 states have internal predecessors, (11546), 4684 states have call successors, (4684), 24 states have call predecessors, (4684), 24 states have return successors, (4684), 4682 states have call predecessors, (4684), 4684 states have call successors, (4684) [2022-10-16 15:34:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 15:34:13,770 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:34:13,771 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 15:34:13,772 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 224 more)] === [2022-10-16 15:34:13,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:34:13,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1555749810, now seen corresponding path program 1 times [2022-10-16 15:34:13,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:34:13,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896721809] [2022-10-16 15:34:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:34:13,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 15:34:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:14,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 15:34:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:14,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 15:34:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:14,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 15:34:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:14,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 15:34:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 15:34:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 15:34:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:34:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-16 15:34:14,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 15:34:14,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896721809] [2022-10-16 15:34:14,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896721809] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 15:34:14,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 15:34:14,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 15:34:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839421371] [2022-10-16 15:34:14,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 15:34:14,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 15:34:14,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 15:34:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 15:34:14,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:34:15,046 INFO L87 Difference]: Start difference. First operand has 13688 states, 8753 states have (on average 1.3190905975094254) internal successors, (11546), 9091 states have internal predecessors, (11546), 4684 states have call successors, (4684), 24 states have call predecessors, (4684), 24 states have return successors, (4684), 4682 states have call predecessors, (4684), 4684 states have call successors, (4684) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 15:34:15,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 15:34:15,936 INFO L93 Difference]: Finished difference Result 27159 states and 46478 transitions. [2022-10-16 15:34:15,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 15:34:15,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2022-10-16 15:34:15,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 15:34:16,091 INFO L225 Difference]: With dead ends: 27159 [2022-10-16 15:34:16,091 INFO L226 Difference]: Without dead ends: 11532 [2022-10-16 15:34:16,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:34:16,230 INFO L413 NwaCegarLoop]: 20699 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, 20699 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 15:34:16,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20699 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 15:34:16,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11532 states.