/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/rekh_nxt.2.M1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:39:45,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:39:45,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:39:45,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:39:45,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:39:45,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:39:45,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:39:45,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:39:45,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:39:45,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:39:45,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:39:45,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:39:45,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:39:45,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:39:45,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:39:45,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:39:45,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:39:45,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:39:45,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:39:45,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:39:45,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:39:45,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:39:45,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:39:45,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:39:45,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:39:45,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:39:45,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:39:45,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:39:45,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:39:45,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:39:45,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:39:45,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:39:45,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:39:45,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:39:45,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:39:45,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:39:45,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:39:45,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:39:45,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:39:45,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:39:45,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:39:45,512 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 15:39:45,569 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:39:45,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:39:45,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:39:45,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:39:45,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:39:45,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:39:45,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:39:45,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:39:45,576 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:39:45,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:39:45,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:39:45,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:39:45,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:39:45,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:39:45,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:39:45,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:39:45,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:39:45,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:39:45,580 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:39:45,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:39:45,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:39:45,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:39:45,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:39:45,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:39:45,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:39:45,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:39:45,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:39:45,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:39:45,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:39:45,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:39:45,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:39:45,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:39:45,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:39:45,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:39:46,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:39:46,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:39:46,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:39:46,108 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:39:46,108 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:39:46,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c [2022-10-16 15:39:46,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bfcc0657/98c8a7804ff24af0b442d1350d247019/FLAGe9e608e8d [2022-10-16 15:39:47,060 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:39:47,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c [2022-10-16 15:39:47,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bfcc0657/98c8a7804ff24af0b442d1350d247019/FLAGe9e608e8d [2022-10-16 15:39:47,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bfcc0657/98c8a7804ff24af0b442d1350d247019 [2022-10-16 15:39:47,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:39:47,202 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:39:47,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:39:47,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:39:47,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:39:47,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:47,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c3db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47, skipping insertion in model container [2022-10-16 15:39:47,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:47,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:39:47,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:39:47,599 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/rekh_nxt.2.M1-1.c[1765,1778] [2022-10-16 15:39:48,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:39:48,175 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:39:48,202 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/rekh_nxt.2.M1-1.c[1765,1778] [2022-10-16 15:39:48,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:39:48,546 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:39:48,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48 WrapperNode [2022-10-16 15:39:48,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:39:48,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:39:48,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:39:48,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:39:48,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:48,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:48,868 INFO L138 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4795 [2022-10-16 15:39:48,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:39:48,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:39:48,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:39:48,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:39:48,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:48,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:48,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:48,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:49,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:49,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:49,299 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:49,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:49,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:39:49,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:39:49,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:39:49,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:39:49,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (1/1) ... [2022-10-16 15:39:49,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:39:49,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:39:49,398 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 15:39:49,404 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 15:39:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:39:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:39:49,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:39:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:39:49,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:39:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:39:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:39:49,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:39:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:39:49,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:39:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-10-16 15:39:49,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-10-16 15:39:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:39:49,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:39:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:39:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:39:49,535 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:39:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:39:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:39:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:39:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:39:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:39:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:39:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:39:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:39:49,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:39:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:39:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-16 15:39:49,537 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-16 15:39:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:39:49,537 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:39:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-16 15:39:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-16 15:39:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:39:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:39:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:39:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:39:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:39:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:39:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:39:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:39:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:39:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:39:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:39:50,133 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:39:50,138 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:40:01,025 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:40:01,057 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:40:01,057 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:40:01,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:40:01 BoogieIcfgContainer [2022-10-16 15:40:01,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:40:01,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:40:01,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:40:01,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:40:01,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:39:47" (1/3) ... [2022-10-16 15:40:01,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ccec64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:40:01, skipping insertion in model container [2022-10-16 15:40:01,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:48" (2/3) ... [2022-10-16 15:40:01,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ccec64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:40:01, skipping insertion in model container [2022-10-16 15:40:01,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:40:01" (3/3) ... [2022-10-16 15:40:01,078 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M1-1.c [2022-10-16 15:40:01,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:40:01,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 15:40:01,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:40:01,271 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;@10aa3471, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:40:01,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 15:40:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 1961 states, 1158 states have (on average 1.2107081174438687) internal successors, (1402), 1174 states have internal predecessors, (1402), 772 states have call successors, (772), 18 states have call predecessors, (772), 18 states have return successors, (772), 770 states have call predecessors, (772), 772 states have call successors, (772) [2022-10-16 15:40:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1289 [2022-10-16 15:40:01,404 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:40:01,407 INFO L195 NwaCegarLoop]: trace histogram [208, 208, 208, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:01,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __startrek_entry_pt_OSEK_Task_ts1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__startrek_entry_pt_OSEK_Task_ts1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, __startrek_entry_pt_OSEK_Task_ts1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-10-16 15:40:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:40:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash 877166419, now seen corresponding path program 1 times [2022-10-16 15:40:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:40:01,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239693460] [2022-10-16 15:40:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:40:01,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms