/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.1.M4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:27:18,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:27:18,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:27:18,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:27:18,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:27:18,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:27:18,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:27:18,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:27:18,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:27:18,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:27:18,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:27:18,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:27:18,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:27:18,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:27:18,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:27:18,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:27:18,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:27:18,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:27:18,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:27:18,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:27:18,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:27:18,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:27:18,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:27:18,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:27:18,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:27:18,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:27:18,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:27:18,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:27:18,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:27:18,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:27:18,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:27:18,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:27:18,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:27:18,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:27:18,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:27:18,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:27:18,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:27:18,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:27:18,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:27:18,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:27:18,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:27:18,404 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 17:27:18,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:27:18,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:27:18,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:27:18,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:27:18,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:27:18,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:27:18,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:27:18,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:27:18,435 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:27:18,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:27:18,436 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:27:18,436 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:27:18,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:27:18,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:27:18,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:27:18,437 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:27:18,438 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:27:18,438 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:27:18,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:27:18,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:27:18,439 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:27:18,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:27:18,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:27:18,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:27:18,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:27:18,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:27:18,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:27:18,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:27:18,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:27:18,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:27:18,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:27:18,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:27:18,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:27:18,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:27:18,914 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:27:18,915 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:27:18,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.c [2022-10-15 17:27:18,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68dd1fc97/1748434669014124a8d25e40a5f31c67/FLAG97f6086fc [2022-10-15 17:27:19,802 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:27:19,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.c [2022-10-15 17:27:19,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68dd1fc97/1748434669014124a8d25e40a5f31c67/FLAG97f6086fc [2022-10-15 17:27:19,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68dd1fc97/1748434669014124a8d25e40a5f31c67 [2022-10-15 17:27:19,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:27:20,000 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:27:20,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:27:20,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:27:20,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:27:20,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:27:19" (1/1) ... [2022-10-15 17:27:20,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30856e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:20, skipping insertion in model container [2022-10-15 17:27:20,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:27:19" (1/1) ... [2022-10-15 17:27:20,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:27:20,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:27:20,264 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.1.M4-1.c[1800,1813] [2022-10-15 17:27:20,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:27:20,866 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:27:20,891 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.1.M4-1.c[1800,1813] [2022-10-15 17:27:21,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:27:21,235 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:27:21,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21 WrapperNode [2022-10-15 17:27:21,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:27:21,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:27:21,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:27:21,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:27:21,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:21,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:21,702 INFO L138 Inliner]: procedures = 60, calls = 3154, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5973 [2022-10-15 17:27:21,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:27:21,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:27:21,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:27:21,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:27:21,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:21,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:21,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:21,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:22,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:22,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:22,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:22,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:22,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:27:22,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:27:22,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:27:22,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:27:22,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (1/1) ... [2022-10-15 17:27:22,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:27:22,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:27:22,194 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 17:27:22,219 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 17:27:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:27:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-10-15 17:27:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-10-15 17:27:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-15 17:27:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-15 17:27:22,261 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:27:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:27:22,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:27:22,261 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-15 17:27:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-15 17:27:22,261 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-15 17:27:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-15 17:27:22,262 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-15 17:27:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-15 17:27:22,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:27:22,262 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-15 17:27:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-15 17:27:22,262 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-15 17:27:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-15 17:27:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-10-15 17:27:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-10-15 17:27:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:27:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:27:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:27:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:27:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-15 17:27:22,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-15 17:27:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:27:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-10-15 17:27:22,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-10-15 17:27:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:27:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-15 17:27:22,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-15 17:27:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-15 17:27:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-15 17:27:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-10-15 17:27:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-10-15 17:27:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-15 17:27:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-15 17:27:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 17:27:22,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 17:27:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:27:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:27:22,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:27:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-15 17:27:22,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-15 17:27:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-15 17:27:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-15 17:27:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:27:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:27:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-10-15 17:27:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-10-15 17:27:22,839 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:27:22,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:27:31,711 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:27:31,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:27:31,763 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 17:27:31,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:27:31 BoogieIcfgContainer [2022-10-15 17:27:31,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:27:31,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:27:31,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:27:31,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:27:31,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:27:19" (1/3) ... [2022-10-15 17:27:31,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66900f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:27:31, skipping insertion in model container [2022-10-15 17:27:31,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:21" (2/3) ... [2022-10-15 17:27:31,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66900f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:27:31, skipping insertion in model container [2022-10-15 17:27:31,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:27:31" (3/3) ... [2022-10-15 17:27:31,785 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_aso.1.M4-1.c [2022-10-15 17:27:31,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:27:31,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4324 error locations. [2022-10-15 17:27:32,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:27:32,104 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;@248815b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:27:32,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4324 error locations. [2022-10-15 17:27:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 9122 states, 3835 states have (on average 2.1984354628422427) internal successors, (8431), 8162 states have internal predecessors, (8431), 940 states have call successors, (940), 22 states have call predecessors, (940), 22 states have return successors, (940), 938 states have call predecessors, (940), 940 states have call successors, (940) [2022-10-15 17:27:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:27:32,150 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:32,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:27:32,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4322 more)] === [2022-10-15 17:27:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash 10131646, now seen corresponding path program 1 times [2022-10-15 17:27:32,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:32,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486942989] [2022-10-15 17:27:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:32,610 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 17:27:32,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:32,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486942989] [2022-10-15 17:27:32,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486942989] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:32,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:32,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:32,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705666853] [2022-10-15 17:27:32,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:32,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:32,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:32,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:32,747 INFO L87 Difference]: Start difference. First operand has 9122 states, 3835 states have (on average 2.1984354628422427) internal successors, (8431), 8162 states have internal predecessors, (8431), 940 states have call successors, (940), 22 states have call predecessors, (940), 22 states have return successors, (940), 938 states have call predecessors, (940), 940 states have call successors, (940) 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 17:27:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:27:41,952 INFO L93 Difference]: Finished difference Result 13517 states and 15155 transitions. [2022-10-15 17:27:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:27:41,955 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 17:27:41,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:27:42,098 INFO L225 Difference]: With dead ends: 13517 [2022-10-15 17:27:42,098 INFO L226 Difference]: Without dead ends: 13515 [2022-10-15 17:27:42,102 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 17:27:42,111 INFO L413 NwaCegarLoop]: 8474 mSDtfsCounter, 4857 mSDsluCounter, 5812 mSDsCounter, 0 mSdLazyCounter, 6651 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4857 SdHoareTripleChecker+Valid, 14286 SdHoareTripleChecker+Invalid, 6680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 6651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:27:42,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4857 Valid, 14286 Invalid, 6680 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [29 Valid, 6651 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-10-15 17:27:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13515 states. [2022-10-15 17:27:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13515 to 11353. [2022-10-15 17:27:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11353 states, 5716 states have (on average 2.190692792162351) internal successors, (12522), 10044 states have internal predecessors, (12522), 1278 states have call successors, (1278), 38 states have call predecessors, (1278), 36 states have return successors, (1278), 1271 states have call predecessors, (1278), 1278 states have call successors, (1278) [2022-10-15 17:27:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11353 states to 11353 states and 15078 transitions. [2022-10-15 17:27:44,131 INFO L78 Accepts]: Start accepts. Automaton has 11353 states and 15078 transitions. Word has length 3 [2022-10-15 17:27:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:27:44,131 INFO L495 AbstractCegarLoop]: Abstraction has 11353 states and 15078 transitions. [2022-10-15 17:27:44,132 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-10-15 17:27:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 11353 states and 15078 transitions. [2022-10-15 17:27:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:27:44,132 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:44,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:27:44,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:27:44,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4322 more)] === [2022-10-15 17:27:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash 10131647, now seen corresponding path program 1 times [2022-10-15 17:27:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:44,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082960731] [2022-10-15 17:27:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:44,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:44,319 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 17:27:44,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:44,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082960731] [2022-10-15 17:27:44,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082960731] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:44,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:44,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:44,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961671445] [2022-10-15 17:27:44,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:44,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:44,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:44,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:44,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:44,325 INFO L87 Difference]: Start difference. First operand 11353 states and 15078 transitions. 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 17:27:55,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:27:55,811 INFO L93 Difference]: Finished difference Result 13208 states and 15054 transitions. [2022-10-15 17:27:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:27:55,813 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 17:27:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:27:55,915 INFO L225 Difference]: With dead ends: 13208 [2022-10-15 17:27:55,916 INFO L226 Difference]: Without dead ends: 13208 [2022-10-15 17:27:55,916 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 17:27:55,918 INFO L413 NwaCegarLoop]: 8669 mSDtfsCounter, 3976 mSDsluCounter, 5814 mSDsCounter, 0 mSdLazyCounter, 6362 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3976 SdHoareTripleChecker+Valid, 14483 SdHoareTripleChecker+Invalid, 6388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 6362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:27:55,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3976 Valid, 14483 Invalid, 6388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 6362 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-10-15 17:27:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13208 states. [2022-10-15 17:27:57,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13208 to 11356. [2022-10-15 17:27:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11356 states, 5719 states have (on average 2.185347088651862) internal successors, (12498), 10046 states have internal predecessors, (12498), 1278 states have call successors, (1278), 39 states have call predecessors, (1278), 37 states have return successors, (1278), 1271 states have call predecessors, (1278), 1278 states have call successors, (1278) [2022-10-15 17:27:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11356 states to 11356 states and 15054 transitions. [2022-10-15 17:27:57,477 INFO L78 Accepts]: Start accepts. Automaton has 11356 states and 15054 transitions. Word has length 3 [2022-10-15 17:27:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:27:57,478 INFO L495 AbstractCegarLoop]: Abstraction has 11356 states and 15054 transitions. [2022-10-15 17:27:57,479 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-10-15 17:27:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 11356 states and 15054 transitions. [2022-10-15 17:27:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:27:57,480 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:57,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:27:57,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:27:57,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4322 more)] === [2022-10-15 17:27:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:57,485 INFO L85 PathProgramCache]: Analyzing trace with hash 314091175, now seen corresponding path program 1 times [2022-10-15 17:27:57,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:57,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796090482] [2022-10-15 17:27:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:57,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:57,646 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 17:27:57,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:57,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796090482] [2022-10-15 17:27:57,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796090482] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:57,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:57,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:57,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80039547] [2022-10-15 17:27:57,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:57,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:57,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:57,655 INFO L87 Difference]: Start difference. First operand 11356 states and 15054 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 17:28:08,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:08,832 INFO L93 Difference]: Finished difference Result 13464 states and 15101 transitions. [2022-10-15 17:28:08,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:08,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-10-15 17:28:08,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:08,877 INFO L225 Difference]: With dead ends: 13464 [2022-10-15 17:28:08,877 INFO L226 Difference]: Without dead ends: 13464 [2022-10-15 17:28:08,878 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 17:28:08,880 INFO L413 NwaCegarLoop]: 8498 mSDtfsCounter, 4801 mSDsluCounter, 5811 mSDsCounter, 0 mSdLazyCounter, 6622 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4801 SdHoareTripleChecker+Valid, 14309 SdHoareTripleChecker+Invalid, 6651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 6622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:08,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4801 Valid, 14309 Invalid, 6651 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 6622 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-10-15 17:28:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13464 states. [2022-10-15 17:28:10,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13464 to 11355. [2022-10-15 17:28:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11355 states, 5719 states have (on average 2.180451127819549) internal successors, (12470), 10045 states have internal predecessors, (12470), 1278 states have call successors, (1278), 39 states have call predecessors, (1278), 37 states have return successors, (1278), 1271 states have call predecessors, (1278), 1278 states have call successors, (1278) [2022-10-15 17:28:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11355 states to 11355 states and 15026 transitions. [2022-10-15 17:28:10,111 INFO L78 Accepts]: Start accepts. Automaton has 11355 states and 15026 transitions. Word has length 4 [2022-10-15 17:28:10,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:10,111 INFO L495 AbstractCegarLoop]: Abstraction has 11355 states and 15026 transitions. [2022-10-15 17:28:10,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 17:28:10,112 INFO L276 IsEmpty]: Start isEmpty. Operand 11355 states and 15026 transitions. [2022-10-15 17:28:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:28:10,112 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:10,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:28:10,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:28:10,113 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4322 more)] === [2022-10-15 17:28:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash 314091176, now seen corresponding path program 1 times [2022-10-15 17:28:10,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:10,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367973994] [2022-10-15 17:28:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:10,244 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 17:28:10,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:10,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367973994] [2022-10-15 17:28:10,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367973994] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:10,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:10,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:10,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563643701] [2022-10-15 17:28:10,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:10,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:10,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:10,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:10,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:10,256 INFO L87 Difference]: Start difference. First operand 11355 states and 15026 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)