/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.M1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:28:52,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:28:52,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:28:52,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:28:52,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:28:52,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:28:52,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:28:52,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:28:52,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:28:52,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:28:52,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:28:52,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:28:52,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:28:52,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:28:52,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:28:52,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:28:52,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:28:52,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:28:52,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:28:52,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:28:52,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:28:52,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:28:52,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:28:52,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:28:52,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:28:52,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:28:52,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:28:52,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:28:52,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:28:52,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:28:52,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:28:52,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:28:52,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:28:52,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:28:52,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:28:52,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:28:52,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:28:52,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:28:52,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:28:52,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:28:52,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:28:52,796 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 15:28:52,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:28:52,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:28:52,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:28:52,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:28:52,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:28:52,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:28:52,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:28:52,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:28:52,851 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:28:52,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:28:52,852 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:28:52,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:28:52,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:28:52,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:28:52,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:28:52,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:28:52,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:28:52,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:28:52,854 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:28:52,854 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:28:52,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:28:52,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:28:52,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:28:52,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:28:52,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:28:52,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:28:52,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:28:52,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:28:52,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:28:52,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:28:52,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:28:52,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:28:52,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:28:52,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:28:53,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:28:53,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:28:53,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:28:53,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:28:53,346 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:28:53,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-1.c [2022-10-16 15:28:53,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d065a09d/6ac9116ac8d042acb2638d0681ea41ca/FLAG843833de0 [2022-10-16 15:28:54,204 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:28:54,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-1.c [2022-10-16 15:28:54,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d065a09d/6ac9116ac8d042acb2638d0681ea41ca/FLAG843833de0 [2022-10-16 15:28:54,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d065a09d/6ac9116ac8d042acb2638d0681ea41ca [2022-10-16 15:28:54,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:28:54,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:28:54,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:28:54,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:28:54,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:28:54,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:28:54" (1/1) ... [2022-10-16 15:28:54,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b7471e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:54, skipping insertion in model container [2022-10-16 15:28:54,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:28:54" (1/1) ... [2022-10-16 15:28:54,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:28:54,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:28:54,659 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.M1-1.c[1974,1987] [2022-10-16 15:28:55,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:28:55,198 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:28:55,232 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.M1-1.c[1974,1987] [2022-10-16 15:28:55,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:28:55,442 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:28:55,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55 WrapperNode [2022-10-16 15:28:55,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:28:55,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:28:55,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:28:55,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:28:55,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:55,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:55,762 INFO L138 Inliner]: procedures = 60, calls = 2058, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4433 [2022-10-16 15:28:55,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:28:55,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:28:55,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:28:55,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:28:55,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:55,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:55,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:55,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:56,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:56,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:56,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:56,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:56,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:28:56,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:28:56,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:28:56,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:28:56,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (1/1) ... [2022-10-16 15:28:56,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:28:56,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:28:56,228 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 15:28:56,245 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 15:28:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:28:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-10-16 15:28:56,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-10-16 15:28:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:28:56,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:28:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:28:56,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:28:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:28:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:28:56,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:28:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:28:56,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:28:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:28:56,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:28:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:28:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:28:56,304 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:28:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:28:56,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:28:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-10-16 15:28:56,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-10-16 15:28:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:28:56,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:28:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:28:56,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:28:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-16 15:28:56,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-16 15:28:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:28:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:28:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-16 15:28:56,306 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-16 15:28:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:28:56,306 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:28:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-10-16 15:28:56,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-10-16 15:28:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-16 15:28:56,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-16 15:28:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:28:56,307 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:28:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:28:56,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:28:56,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:28:56,308 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:28:56,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:28:56,308 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:28:56,308 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:28:56,309 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:28:56,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:28:56,309 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-10-16 15:28:56,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-10-16 15:28:56,827 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:28:56,830 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:29:05,044 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:29:05,116 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:29:05,116 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:29:05,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:29:05 BoogieIcfgContainer [2022-10-16 15:29:05,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:29:05,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:29:05,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:29:05,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:29:05,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:28:54" (1/3) ... [2022-10-16 15:29:05,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4409e167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:29:05, skipping insertion in model container [2022-10-16 15:29:05,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:55" (2/3) ... [2022-10-16 15:29:05,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4409e167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:29:05, skipping insertion in model container [2022-10-16 15:29:05,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:29:05" (3/3) ... [2022-10-16 15:29:05,138 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_aso.1.M1-1.c [2022-10-16 15:29:05,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:29:05,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-10-16 15:29:05,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:29:05,279 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;@5a84a6b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:29:05,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-10-16 15:29:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 1480 states, 917 states have (on average 1.321701199563795) internal successors, (1212), 1008 states have internal predecessors, (1212), 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) [2022-10-16 15:29:05,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-16 15:29:05,305 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:29:05,306 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 15:29:05,307 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 15:29:05,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:29:05,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1832411563, now seen corresponding path program 1 times [2022-10-16 15:29:05,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:29:05,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534970943] [2022-10-16 15:29:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:29:05,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 15:29:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:29:05,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 15:29:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:29:05,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 15:29:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:29:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 15:29:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:29:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 15:29:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:29:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 15:29:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:29:05,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 15:29:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:29:05,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 15:29:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 15:29:05,889 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 15:29:05,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 15:29:05,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534970943] [2022-10-16 15:29:05,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534970943] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 15:29:05,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 15:29:05,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 15:29:05,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384441455] [2022-10-16 15:29:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 15:29:05,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 15:29:05,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 15:29:05,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 15:29:05,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 15:29:05,943 INFO L87 Difference]: Start difference. First operand has 1480 states, 917 states have (on average 1.321701199563795) internal successors, (1212), 1008 states have internal predecessors, (1212), 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) [2022-10-16 15:29:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 15:29:06,289 INFO L93 Difference]: Finished difference Result 2905 states and 4803 transitions. [2022-10-16 15:29:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 15:29:06,298 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 15:29:06,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 15:29:06,348 INFO L225 Difference]: With dead ends: 2905 [2022-10-16 15:29:06,348 INFO L226 Difference]: Without dead ends: 1152 [2022-10-16 15:29:06,375 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 15:29:06,383 INFO L413 NwaCegarLoop]: 2121 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, 2121 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 15:29:06,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 15:29:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2022-10-16 15:29:06,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2022-10-16 15:29:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 773 states have (on average 1.3104786545924967) internal successors, (1013), 813 states have internal predecessors, (1013), 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) [2022-10-16 15:29:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1710 transitions. [2022-10-16 15:29:06,762 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1710 transitions. Word has length 47 [2022-10-16 15:29:06,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 15:29:06,763 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1710 transitions. [2022-10-16 15:29:06,764 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 15:29:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1710 transitions. [2022-10-16 15:29:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-10-16 15:29:06,785 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:29:06,786 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] [2022-10-16 15:29:06,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 15:29:06,787 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)] === [2022-10-16 15:29:06,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:29:06,788 INFO L85 PathProgramCache]: Analyzing trace with hash -260082499, now seen corresponding path program 1 times [2022-10-16 15:29:06,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:29:06,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072521260] [2022-10-16 15:29:06,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:29:06,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms