/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/rekcba_ctm.2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:26:05,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:26:05,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:26:05,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:26:05,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:26:05,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:26:05,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:26:05,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:26:05,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:26:05,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:26:05,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:26:05,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:26:05,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:26:05,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:26:05,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:26:05,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:26:05,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:26:05,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:26:05,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:26:05,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:26:05,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:26:05,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:26:05,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:26:05,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:26:05,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:26:05,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:26:05,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:26:05,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:26:05,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:26:05,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:26:05,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:26:05,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:26:05,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:26:05,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:26:05,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:26:05,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:26:05,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:26:05,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:26:05,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:26:05,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:26:05,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:26:05,247 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 17:26:05,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:26:05,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:26:05,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:26:05,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:26:05,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:26:05,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:26:05,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:26:05,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:26:05,303 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:26:05,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:26:05,305 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:26:05,305 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:26:05,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:26:05,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:26:05,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:26:05,306 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:26:05,306 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:26:05,306 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:26:05,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:26:05,306 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:26:05,307 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:26:05,307 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:26:05,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:26:05,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:26:05,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:26:05,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:26:05,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:26:05,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:26:05,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:26:05,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:26:05,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:26:05,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:26:05,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:26:05,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:26:05,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:26:05,718 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:26:05,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c [2022-10-15 17:26:05,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f532e8bcb/ca208eb6d1a3409ab407e06b08da5c50/FLAGd03c0b23e [2022-10-15 17:26:06,658 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:26:06,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c [2022-10-15 17:26:06,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f532e8bcb/ca208eb6d1a3409ab407e06b08da5c50/FLAGd03c0b23e [2022-10-15 17:26:07,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f532e8bcb/ca208eb6d1a3409ab407e06b08da5c50 [2022-10-15 17:26:07,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:26:07,166 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:26:07,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:26:07,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:26:07,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:26:07,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:26:07" (1/1) ... [2022-10-15 17:26:07,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d44a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:07, skipping insertion in model container [2022-10-15 17:26:07,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:26:07" (1/1) ... [2022-10-15 17:26:07,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:26:07,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:26:07,650 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_ctm.2-1.c[2216,2229] [2022-10-15 17:26:08,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:26:08,783 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:26:08,800 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_ctm.2-1.c[2216,2229] [2022-10-15 17:26:09,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:26:09,384 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:26:09,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09 WrapperNode [2022-10-15 17:26:09,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:26:09,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:26:09,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:26:09,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:26:09,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:09,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:10,472 INFO L138 Inliner]: procedures = 101, calls = 6643, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 21156 [2022-10-15 17:26:10,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:26:10,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:26:10,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:26:10,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:26:10,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:10,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:10,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:10,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:11,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:11,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:11,302 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:11,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:11,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:26:11,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:26:11,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:26:11,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:26:11,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (1/1) ... [2022-10-15 17:26:11,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:26:11,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:26:11,477 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 17:26:11,496 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 17:26:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-10-15 17:26:11,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-10-15 17:26:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-10-15 17:26:11,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-10-15 17:26:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:26:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-10-15 17:26:11,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-10-15 17:26:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-15 17:26:11,544 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-15 17:26:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-10-15 17:26:11,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-10-15 17:26:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-10-15 17:26:11,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-10-15 17:26:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-10-15 17:26:11,545 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-10-15 17:26:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-10-15 17:26:11,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-10-15 17:26:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-10-15 17:26:11,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-10-15 17:26:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:26:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-15 17:26:11,546 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-15 17:26:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-10-15 17:26:11,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-10-15 17:26:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-10-15 17:26:11,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-10-15 17:26:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-10-15 17:26:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-10-15 17:26:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-10-15 17:26:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-10-15 17:26:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-10-15 17:26:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-10-15 17:26:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-15 17:26:11,548 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-15 17:26:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:26:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-15 17:26:11,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-15 17:26:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-10-15 17:26:11,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-10-15 17:26:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-10-15 17:26:11,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-10-15 17:26:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-10-15 17:26:11,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-10-15 17:26:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-15 17:26:11,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-15 17:26:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-10-15 17:26:11,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-10-15 17:26:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-15 17:26:11,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-15 17:26:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-10-15 17:26:11,550 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-10-15 17:26:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-10-15 17:26:11,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-10-15 17:26:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-10-15 17:26:11,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-10-15 17:26:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-10-15 17:26:11,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-10-15 17:26:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-10-15 17:26:11,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-10-15 17:26:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-10-15 17:26:11,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-10-15 17:26:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-10-15 17:26:11,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-10-15 17:26:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-10-15 17:26:11,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-10-15 17:26:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-10-15 17:26:11,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-10-15 17:26:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-10-15 17:26:11,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-10-15 17:26:11,557 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-10-15 17:26:11,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-10-15 17:26:11,557 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-10-15 17:26:11,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-10-15 17:26:11,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-10-15 17:26:11,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-10-15 17:26:11,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-10-15 17:26:11,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-10-15 17:26:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-10-15 17:26:11,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-10-15 17:26:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-10-15 17:26:11,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-10-15 17:26:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-10-15 17:26:11,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-10-15 17:26:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-10-15 17:26:11,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-10-15 17:26:11,561 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2022-10-15 17:26:11,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2022-10-15 17:26:11,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:26:11,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-10-15 17:26:11,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-10-15 17:26:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:26:11,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:26:12,728 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:26:12,731 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:26:42,248 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:26:42,338 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:26:42,339 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-15 17:26:42,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:26:42 BoogieIcfgContainer [2022-10-15 17:26:42,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:26:42,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:26:42,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:26:42,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:26:42,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:26:07" (1/3) ... [2022-10-15 17:26:42,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6772f6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:26:42, skipping insertion in model container [2022-10-15 17:26:42,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:09" (2/3) ... [2022-10-15 17:26:42,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6772f6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:26:42, skipping insertion in model container [2022-10-15 17:26:42,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:26:42" (3/3) ... [2022-10-15 17:26:42,378 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_ctm.2-1.c [2022-10-15 17:26:42,400 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:26:42,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12234 error locations. [2022-10-15 17:26:42,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:26:42,973 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;@666c850e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:26:42,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12234 error locations. [2022-10-15 17:26:43,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 22998 states, 10380 states have (on average 2.411946050096339) internal successors, (25036), 22637 states have internal predecessors, (25036), 340 states have call successors, (340), 43 states have call predecessors, (340), 43 states have return successors, (340), 330 states have call predecessors, (340), 340 states have call successors, (340) [2022-10-15 17:26:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:26:43,042 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:26:43,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:26:43,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_read_R_stateErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_read_R_stateErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12232 more)] === [2022-10-15 17:26:43,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:26:43,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2663293, now seen corresponding path program 1 times [2022-10-15 17:26:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:26:43,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647487652] [2022-10-15 17:26:43,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:26:43,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:26:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:26:43,784 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 17:26:43,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:26:43,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647487652] [2022-10-15 17:26:43,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647487652] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:26:43,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:26:43,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:26:43,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119876181] [2022-10-15 17:26:43,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:26:43,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:26:43,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:26:43,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:26:43,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:26:43,949 INFO L87 Difference]: Start difference. First operand has 22998 states, 10380 states have (on average 2.411946050096339) internal successors, (25036), 22637 states have internal predecessors, (25036), 340 states have call successors, (340), 43 states have call predecessors, (340), 43 states have return successors, (340), 330 states have call predecessors, (340), 340 states have call successors, (340) 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)