/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-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/rekh_aso.4.M4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:27:52,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:27:52,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:27:52,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:27:52,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:27:52,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:27:52,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:27:52,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:27:52,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:27:52,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:27:52,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:27:52,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:27:52,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:27:52,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:27:52,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:27:52,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:27:52,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:27:52,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:27:52,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:27:52,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:27:52,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:27:52,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:27:52,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:27:52,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:27:52,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:27:52,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:27:52,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:27:52,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:27:52,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:27:52,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:27:52,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:27:52,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:27:52,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:27:52,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:27:52,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:27:52,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:27:52,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:27:52,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:27:52,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:27:52,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:27:52,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:27:52,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:27:52,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:27:52,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:27:52,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:27:52,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:27:52,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:27:52,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:27:52,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:27:52,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:27:52,327 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:27:52,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:27:52,328 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:27:52,328 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:27:52,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:27:52,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:27:52,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:27:52,330 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:27:52,330 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:27:52,330 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:27:52,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:27:52,331 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:27:52,331 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:27:52,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:27:52,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:27:52,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:27:52,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:27:52,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:27:52,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:27:52,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:27:52,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:27:52,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:27:52,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:27:52,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:27:52,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:27:52,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:27:52,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:27:52,821 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:27:52,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.4.M4.c [2022-10-15 17:27:52,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656a50272/bc5e052ee7934b57bdaa2279c34505fe/FLAG1255496b1 [2022-10-15 17:27:53,913 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:27:53,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.4.M4.c [2022-10-15 17:27:53,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656a50272/bc5e052ee7934b57bdaa2279c34505fe/FLAG1255496b1 [2022-10-15 17:27:53,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656a50272/bc5e052ee7934b57bdaa2279c34505fe [2022-10-15 17:27:53,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:27:53,996 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:27:53,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:27:53,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:27:54,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:27:54,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:27:53" (1/1) ... [2022-10-15 17:27:54,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c35e5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:54, skipping insertion in model container [2022-10-15 17:27:54,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:27:53" (1/1) ... [2022-10-15 17:27:54,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:27:54,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:27:54,453 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_aso.4.M4.c[1806,1819] [2022-10-15 17:27:55,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:27:55,300 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:27:55,317 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_aso.4.M4.c[1806,1819] [2022-10-15 17:27:55,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:27:55,879 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:27:55,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55 WrapperNode [2022-10-15 17:27:55,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:27:55,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:27:55,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:27:55,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:27:55,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:56,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:56,653 INFO L138 Inliner]: procedures = 70, calls = 5236, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 9829 [2022-10-15 17:27:56,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:27:56,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:27:56,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:27:56,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:27:56,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:56,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:56,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:56,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:57,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:57,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:57,333 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:57,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:57,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:27:57,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:27:57,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:27:57,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:27:57,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (1/1) ... [2022-10-15 17:27:57,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:27:57,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:27:57,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:27:57,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:27:57,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:27:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-10-15 17:27:57,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-10-15 17:27:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-15 17:27:57,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-15 17:27:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:27:57,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:27:57,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:27:57,573 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-15 17:27:57,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-15 17:27:57,573 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-15 17:27:57,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-15 17:27:57,573 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-10-15 17:27:57,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-10-15 17:27:57,574 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-15 17:27:57,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-15 17:27:57,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:27:57,574 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-15 17:27:57,574 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-15 17:27:57,575 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-15 17:27:57,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-15 17:27:57,575 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-10-15 17:27:57,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-10-15 17:27:57,575 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-10-15 17:27:57,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-10-15 17:27:57,576 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:27:57,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:27:57,576 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:27:57,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:27:57,576 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-15 17:27:57,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-15 17:27:57,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:27:57,577 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-10-15 17:27:57,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-10-15 17:27:57,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:27:57,577 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-15 17:27:57,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-15 17:27:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-15 17:27:57,578 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-15 17:27:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-10-15 17:27:57,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-10-15 17:27:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-15 17:27:57,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-15 17:27:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 17:27:57,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 17:27:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:27:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:27:57,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:27:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-15 17:27:57,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-15 17:27:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-15 17:27:57,580 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-15 17:27:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:27:57,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:27:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-10-15 17:27:57,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-10-15 17:27:58,397 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:27:58,401 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:28:13,997 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:28:14,203 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:28:14,203 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 17:28:14,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:28:14 BoogieIcfgContainer [2022-10-15 17:28:14,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:28:14,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:28:14,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:28:14,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:28:14,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:27:53" (1/3) ... [2022-10-15 17:28:14,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faaf350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:28:14, skipping insertion in model container [2022-10-15 17:28:14,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:55" (2/3) ... [2022-10-15 17:28:14,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faaf350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:28:14, skipping insertion in model container [2022-10-15 17:28:14,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:28:14" (3/3) ... [2022-10-15 17:28:14,234 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_aso.4.M4.c [2022-10-15 17:28:14,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:28:14,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7324 error locations. [2022-10-15 17:28:14,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:28:14,538 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@69381bff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:28:14,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7324 error locations. [2022-10-15 17:28:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 15064 states, 6209 states have (on average 2.233854082783057) internal successors, (13870), 13536 states have internal predecessors, (13870), 1506 states have call successors, (1506), 24 states have call predecessors, (1506), 24 states have return successors, (1506), 1504 states have call predecessors, (1506), 1506 states have call successors, (1506) [2022-10-15 17:28:14,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:28:14,602 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:14,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:28:14,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7322 more)] === [2022-10-15 17:28:14,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:14,611 INFO L85 PathProgramCache]: Analyzing trace with hash 16244554, now seen corresponding path program 1 times [2022-10-15 17:28:14,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:14,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876158304] [2022-10-15 17:28:14,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:14,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:28:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:15,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876158304] [2022-10-15 17:28:15,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876158304] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:15,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:15,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:15,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791588049] [2022-10-15 17:28:15,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:15,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:15,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:15,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:15,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:15,339 INFO L87 Difference]: Start difference. First operand has 15064 states, 6209 states have (on average 2.233854082783057) internal successors, (13870), 13536 states have internal predecessors, (13870), 1506 states have call successors, (1506), 24 states have call predecessors, (1506), 24 states have return successors, (1506), 1504 states have call predecessors, (1506), 1506 states have call successors, (1506) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:28:36,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:36,999 INFO L93 Difference]: Finished difference Result 29899 states and 33541 transitions. [2022-10-15 17:28:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:37,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-15 17:28:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:37,334 INFO L225 Difference]: With dead ends: 29899 [2022-10-15 17:28:37,334 INFO L226 Difference]: Without dead ends: 29895 [2022-10-15 17:28:37,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:37,350 INFO L413 NwaCegarLoop]: 20095 mSDtfsCounter, 16658 mSDsluCounter, 9379 mSDsCounter, 0 mSdLazyCounter, 14819 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16658 SdHoareTripleChecker+Valid, 29474 SdHoareTripleChecker+Invalid, 14977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 14819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:37,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16658 Valid, 29474 Invalid, 14977 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [158 Valid, 14819 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2022-10-15 17:28:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29895 states.