/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_ctm.2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:28:02,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:28:02,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:28:02,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:28:02,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:28:02,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:28:02,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:28:02,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:28:02,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:28:02,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:28:02,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:28:02,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:28:02,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:28:02,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:28:02,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:28:02,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:28:02,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:28:02,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:28:02,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:28:02,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:28:02,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:28:02,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:28:02,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:28:02,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:28:02,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:28:02,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:28:02,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:28:02,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:28:02,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:28:02,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:28:02,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:28:02,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:28:02,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:28:02,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:28:02,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:28:02,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:28:02,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:28:02,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:28:02,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:28:02,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:28:02,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:28:02,463 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 17:28:02,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:28:02,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:28:02,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:28:02,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:28:02,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:28:02,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:28:02,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:28:02,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:28:02,522 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:28:02,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:28:02,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:28:02,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:28:02,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:28:02,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:28:02,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:28:02,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:28:02,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:28:02,525 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:28:02,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:28:02,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:28:02,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:28:02,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:28:02,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:28:02,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:28:02,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:28:02,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:28:02,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:28:02,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:28:02,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:28:02,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:28:02,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:28:03,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:28:03,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:28:03,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:28:03,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:28:03,050 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:28:03,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2022-10-15 17:28:03,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd156103/1d30b3261c734ac1a05d5f0df57125c8/FLAGd859b6b42 [2022-10-15 17:28:04,170 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:28:04,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2022-10-15 17:28:04,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd156103/1d30b3261c734ac1a05d5f0df57125c8/FLAGd859b6b42 [2022-10-15 17:28:04,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd156103/1d30b3261c734ac1a05d5f0df57125c8 [2022-10-15 17:28:04,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:28:04,701 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:28:04,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:28:04,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:28:04,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:28:04,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:28:04" (1/1) ... [2022-10-15 17:28:04,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ede9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:04, skipping insertion in model container [2022-10-15 17:28:04,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:28:04" (1/1) ... [2022-10-15 17:28:04,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:28:04,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:28:05,007 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_ctm.2-2.c[1870,1883] [2022-10-15 17:28:05,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:28:05,771 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:28:05,788 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_ctm.2-2.c[1870,1883] [2022-10-15 17:28:06,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:28:06,201 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:28:06,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06 WrapperNode [2022-10-15 17:28:06,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:28:06,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:28:06,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:28:06,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:28:06,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:06,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:06,658 INFO L138 Inliner]: procedures = 99, calls = 2725, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 8221 [2022-10-15 17:28:06,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:28:06,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:28:06,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:28:06,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:28:06,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:06,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:06,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:06,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:07,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:07,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:07,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:07,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:07,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:28:07,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:28:07,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:28:07,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:28:07,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (1/1) ... [2022-10-15 17:28:07,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:28:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:28:07,231 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 17:28:07,246 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 17:28:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-10-15 17:28:07,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-10-15 17:28:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-10-15 17:28:07,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-10-15 17:28:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:28:07,305 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-10-15 17:28:07,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-10-15 17:28:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-15 17:28:07,306 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-15 17:28:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-10-15 17:28:07,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-10-15 17:28:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-10-15 17:28:07,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-10-15 17:28:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-10-15 17:28:07,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-10-15 17:28:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-10-15 17:28:07,307 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-10-15 17:28:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-10-15 17:28:07,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-10-15 17:28:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-10-15 17:28:07,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-10-15 17:28:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:28:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-15 17:28:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-15 17:28:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-10-15 17:28:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-10-15 17:28:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-10-15 17:28:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-10-15 17:28:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-10-15 17:28:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-10-15 17:28:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-10-15 17:28:07,309 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-10-15 17:28:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-10-15 17:28:07,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-10-15 17:28:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-15 17:28:07,309 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-15 17:28:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:28:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-15 17:28:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-15 17:28:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-10-15 17:28:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-10-15 17:28:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-10-15 17:28:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-10-15 17:28:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-10-15 17:28:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-10-15 17:28:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-15 17:28:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-15 17:28:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-10-15 17:28:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-10-15 17:28:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-15 17:28:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-15 17:28:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-10-15 17:28:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-10-15 17:28:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-10-15 17:28:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-10-15 17:28:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-10-15 17:28:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-10-15 17:28:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-10-15 17:28:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-10-15 17:28:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-10-15 17:28:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-10-15 17:28:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-10-15 17:28:07,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-10-15 17:28:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-10-15 17:28:07,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-10-15 17:28:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-10-15 17:28:07,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-10-15 17:28:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-10-15 17:28:07,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-10-15 17:28:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-10-15 17:28:07,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-10-15 17:28:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-10-15 17:28:07,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-10-15 17:28:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-10-15 17:28:07,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-10-15 17:28:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-10-15 17:28:07,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-10-15 17:28:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-10-15 17:28:07,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-10-15 17:28:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-10-15 17:28:07,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-10-15 17:28:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-10-15 17:28:07,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-10-15 17:28:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-10-15 17:28:07,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-10-15 17:28:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-10-15 17:28:07,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-10-15 17:28:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-10-15 17:28:07,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-10-15 17:28:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2022-10-15 17:28:07,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2022-10-15 17:28:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:28:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-10-15 17:28:07,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-10-15 17:28:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:28:07,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:28:07,895 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:28:07,898 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:28:15,969 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:28:16,019 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:28:16,020 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-15 17:28:16,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:28:16 BoogieIcfgContainer [2022-10-15 17:28:16,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:28:16,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:28:16,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:28:16,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:28:16,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:28:04" (1/3) ... [2022-10-15 17:28:16,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314bb028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:28:16, skipping insertion in model container [2022-10-15 17:28:16,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:06" (2/3) ... [2022-10-15 17:28:16,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314bb028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:28:16, skipping insertion in model container [2022-10-15 17:28:16,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:28:16" (3/3) ... [2022-10-15 17:28:16,045 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.2-2.c [2022-10-15 17:28:16,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:28:16,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3990 error locations. [2022-10-15 17:28:16,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:28:16,243 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;@470afcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:28:16,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3990 error locations. [2022-10-15 17:28:16,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 8202 states, 3862 states have (on average 2.2951838425686173) internal successors, (8864), 7875 states have internal predecessors, (8864), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) [2022-10-15 17:28:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:28:16,279 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:16,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:28:16,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_cs_t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3987 more)] === [2022-10-15 17:28:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:16,286 INFO L85 PathProgramCache]: Analyzing trace with hash 12364903, now seen corresponding path program 1 times [2022-10-15 17:28:16,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:16,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652577184] [2022-10-15 17:28:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:16,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:16,975 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 17:28:16,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:16,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652577184] [2022-10-15 17:28:16,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652577184] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:16,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:16,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:16,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049982750] [2022-10-15 17:28:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:16,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:16,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:17,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:17,075 INFO L87 Difference]: Start difference. First operand has 8202 states, 3862 states have (on average 2.2951838425686173) internal successors, (8864), 7875 states have internal predecessors, (8864), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) 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 17:28:22,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:22,063 INFO L93 Difference]: Finished difference Result 8156 states and 8734 transitions. [2022-10-15 17:28:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:22,066 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 17:28:22,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:22,139 INFO L225 Difference]: With dead ends: 8156 [2022-10-15 17:28:22,140 INFO L226 Difference]: Without dead ends: 8150 [2022-10-15 17:28:22,142 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 17:28:22,150 INFO L413 NwaCegarLoop]: 4743 mSDtfsCounter, 8732 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3991 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8732 SdHoareTripleChecker+Valid, 4743 SdHoareTripleChecker+Invalid, 4032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:22,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8732 Valid, 4743 Invalid, 4032 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 3991 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-10-15 17:28:22,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8150 states. [2022-10-15 17:28:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8150 to 8150. [2022-10-15 17:28:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8150 states, 3853 states have (on average 2.107448741240592) internal successors, (8120), 7823 states have internal predecessors, (8120), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) [2022-10-15 17:28:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8150 states to 8150 states and 8728 transitions. [2022-10-15 17:28:22,528 INFO L78 Accepts]: Start accepts. Automaton has 8150 states and 8728 transitions. Word has length 3 [2022-10-15 17:28:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:22,528 INFO L495 AbstractCegarLoop]: Abstraction has 8150 states and 8728 transitions. [2022-10-15 17:28:22,529 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 17:28:22,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8150 states and 8728 transitions. [2022-10-15 17:28:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:28:22,529 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:22,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:28:22,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:28:22,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_cs_t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3987 more)] === [2022-10-15 17:28:22,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:22,531 INFO L85 PathProgramCache]: Analyzing trace with hash 12364904, now seen corresponding path program 1 times [2022-10-15 17:28:22,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:22,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688247933] [2022-10-15 17:28:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:22,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:22,836 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 17:28:22,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:22,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688247933] [2022-10-15 17:28:22,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688247933] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:22,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:22,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:22,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808217980] [2022-10-15 17:28:22,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:22,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:22,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:22,841 INFO L87 Difference]: Start difference. First operand 8150 states and 8728 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 17:28:28,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:28,368 INFO L93 Difference]: Finished difference Result 8110 states and 8688 transitions. [2022-10-15 17:28:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:28,370 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 17:28:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:28,412 INFO L225 Difference]: With dead ends: 8110 [2022-10-15 17:28:28,412 INFO L226 Difference]: Without dead ends: 8110 [2022-10-15 17:28:28,413 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 17:28:28,414 INFO L413 NwaCegarLoop]: 4740 mSDtfsCounter, 8686 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3948 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8686 SdHoareTripleChecker+Valid, 4740 SdHoareTripleChecker+Invalid, 3987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:28,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8686 Valid, 4740 Invalid, 3987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3948 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-10-15 17:28:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8110 states. [2022-10-15 17:28:28,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8110 to 8110. [2022-10-15 17:28:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8110 states, 3853 states have (on average 2.097067220347781) internal successors, (8080), 7783 states have internal predecessors, (8080), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) [2022-10-15 17:28:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8110 states to 8110 states and 8688 transitions. [2022-10-15 17:28:28,722 INFO L78 Accepts]: Start accepts. Automaton has 8110 states and 8688 transitions. Word has length 3 [2022-10-15 17:28:28,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:28,722 INFO L495 AbstractCegarLoop]: Abstraction has 8110 states and 8688 transitions. [2022-10-15 17:28:28,723 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 17:28:28,723 INFO L276 IsEmpty]: Start isEmpty. Operand 8110 states and 8688 transitions. [2022-10-15 17:28:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:28:28,723 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:28,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:28:28,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:28:28,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_cs_t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3987 more)] === [2022-10-15 17:28:28,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:28,725 INFO L85 PathProgramCache]: Analyzing trace with hash 383324391, now seen corresponding path program 1 times [2022-10-15 17:28:28,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:28,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234043812] [2022-10-15 17:28:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:28,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:28,987 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 17:28:28,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:28,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234043812] [2022-10-15 17:28:28,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234043812] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:28,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:28,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:28,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007826700] [2022-10-15 17:28:28,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:28,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:28,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:28,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:28,991 INFO L87 Difference]: Start difference. First operand 8110 states and 8688 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 17:28:34,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:34,049 INFO L93 Difference]: Finished difference Result 8068 states and 8646 transitions. [2022-10-15 17:28:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:34,049 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 17:28:34,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:34,081 INFO L225 Difference]: With dead ends: 8068 [2022-10-15 17:28:34,081 INFO L226 Difference]: Without dead ends: 8068 [2022-10-15 17:28:34,082 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 17:28:34,083 INFO L413 NwaCegarLoop]: 4698 mSDtfsCounter, 8643 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3948 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8643 SdHoareTripleChecker+Valid, 4698 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:34,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8643 Valid, 4698 Invalid, 3989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3948 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-10-15 17:28:34,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8068 states. [2022-10-15 17:28:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8068 to 8068. [2022-10-15 17:28:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8068 states, 3853 states have (on average 2.0861666234103295) internal successors, (8038), 7741 states have internal predecessors, (8038), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) [2022-10-15 17:28:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8068 states to 8068 states and 8646 transitions. [2022-10-15 17:28:34,303 INFO L78 Accepts]: Start accepts. Automaton has 8068 states and 8646 transitions. Word has length 4 [2022-10-15 17:28:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:34,304 INFO L495 AbstractCegarLoop]: Abstraction has 8068 states and 8646 transitions. [2022-10-15 17:28:34,304 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 17:28:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 8068 states and 8646 transitions. [2022-10-15 17:28:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:28:34,305 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:34,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:28:34,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:28:34,306 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_cs_t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3987 more)] === [2022-10-15 17:28:34,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:34,306 INFO L85 PathProgramCache]: Analyzing trace with hash 383324392, now seen corresponding path program 1 times [2022-10-15 17:28:34,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:34,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853992389] [2022-10-15 17:28:34,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:34,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:34,562 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 17:28:34,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:34,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853992389] [2022-10-15 17:28:34,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853992389] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:34,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:34,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:34,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574598048] [2022-10-15 17:28:34,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:34,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:34,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:34,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:34,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:34,565 INFO L87 Difference]: Start difference. First operand 8068 states and 8646 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 17:28:41,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:41,045 INFO L93 Difference]: Finished difference Result 8028 states and 8606 transitions. [2022-10-15 17:28:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:41,051 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 17:28:41,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:41,090 INFO L225 Difference]: With dead ends: 8028 [2022-10-15 17:28:41,090 INFO L226 Difference]: Without dead ends: 8028 [2022-10-15 17:28:41,091 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 17:28:41,092 INFO L413 NwaCegarLoop]: 4698 mSDtfsCounter, 8603 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3908 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8603 SdHoareTripleChecker+Valid, 4698 SdHoareTripleChecker+Invalid, 3947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:41,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8603 Valid, 4698 Invalid, 3947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3908 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-10-15 17:28:41,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2022-10-15 17:28:41,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 8028. [2022-10-15 17:28:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8028 states, 3853 states have (on average 2.0757851025175187) internal successors, (7998), 7701 states have internal predecessors, (7998), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) [2022-10-15 17:28:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8028 states to 8028 states and 8606 transitions. [2022-10-15 17:28:41,294 INFO L78 Accepts]: Start accepts. Automaton has 8028 states and 8606 transitions. Word has length 4 [2022-10-15 17:28:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:41,294 INFO L495 AbstractCegarLoop]: Abstraction has 8028 states and 8606 transitions. [2022-10-15 17:28:41,295 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 17:28:41,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8028 states and 8606 transitions. [2022-10-15 17:28:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 17:28:41,296 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:41,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 17:28:41,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:28:41,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_cs_t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3987 more)] === [2022-10-15 17:28:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1001833366, now seen corresponding path program 1 times [2022-10-15 17:28:41,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:41,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673810180] [2022-10-15 17:28:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:41,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:41,623 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 17:28:41,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:41,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673810180] [2022-10-15 17:28:41,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673810180] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:41,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:41,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:41,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400221919] [2022-10-15 17:28:41,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:41,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:41,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:41,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:41,629 INFO L87 Difference]: Start difference. First operand 8028 states and 8606 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 17:28:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:46,813 INFO L93 Difference]: Finished difference Result 7986 states and 8564 transitions. [2022-10-15 17:28:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:46,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-10-15 17:28:46,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:46,832 INFO L225 Difference]: With dead ends: 7986 [2022-10-15 17:28:46,833 INFO L226 Difference]: Without dead ends: 7986 [2022-10-15 17:28:46,833 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 17:28:46,834 INFO L413 NwaCegarLoop]: 4658 mSDtfsCounter, 8560 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3906 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8560 SdHoareTripleChecker+Valid, 4658 SdHoareTripleChecker+Invalid, 3947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:46,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8560 Valid, 4658 Invalid, 3947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3906 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-10-15 17:28:46,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7986 states. [2022-10-15 17:28:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7986 to 7986. [2022-10-15 17:28:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7986 states, 3853 states have (on average 2.0648845055800673) internal successors, (7956), 7659 states have internal predecessors, (7956), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) [2022-10-15 17:28:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7986 states to 7986 states and 8564 transitions. [2022-10-15 17:28:47,015 INFO L78 Accepts]: Start accepts. Automaton has 7986 states and 8564 transitions. Word has length 5 [2022-10-15 17:28:47,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:47,015 INFO L495 AbstractCegarLoop]: Abstraction has 7986 states and 8564 transitions. [2022-10-15 17:28:47,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 17:28:47,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7986 states and 8564 transitions. [2022-10-15 17:28:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 17:28:47,016 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:47,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 17:28:47,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:28:47,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_cs_t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3987 more)] === [2022-10-15 17:28:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1001833365, now seen corresponding path program 1 times [2022-10-15 17:28:47,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:47,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133254451] [2022-10-15 17:28:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:47,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:47,311 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 17:28:47,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:47,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133254451] [2022-10-15 17:28:47,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133254451] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:47,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:47,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:47,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205258360] [2022-10-15 17:28:47,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:47,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:47,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:47,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:47,314 INFO L87 Difference]: Start difference. First operand 7986 states and 8564 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 17:28:55,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:55,112 INFO L93 Difference]: Finished difference Result 7946 states and 8524 transitions. [2022-10-15 17:28:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:55,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-10-15 17:28:55,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:55,134 INFO L225 Difference]: With dead ends: 7946 [2022-10-15 17:28:55,135 INFO L226 Difference]: Without dead ends: 7946 [2022-10-15 17:28:55,136 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 17:28:55,140 INFO L413 NwaCegarLoop]: 4656 mSDtfsCounter, 8520 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3868 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8520 SdHoareTripleChecker+Valid, 4656 SdHoareTripleChecker+Invalid, 3907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:55,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8520 Valid, 4656 Invalid, 3907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3868 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-10-15 17:28:55,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2022-10-15 17:28:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 7946. [2022-10-15 17:28:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7946 states, 3853 states have (on average 2.054502984687257) internal successors, (7916), 7619 states have internal predecessors, (7916), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) [2022-10-15 17:28:55,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7946 states to 7946 states and 8524 transitions. [2022-10-15 17:28:55,323 INFO L78 Accepts]: Start accepts. Automaton has 7946 states and 8524 transitions. Word has length 5 [2022-10-15 17:28:55,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:55,324 INFO L495 AbstractCegarLoop]: Abstraction has 7946 states and 8524 transitions. [2022-10-15 17:28:55,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 17:28:55,324 INFO L276 IsEmpty]: Start isEmpty. Operand 7946 states and 8524 transitions. [2022-10-15 17:28:55,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:28:55,325 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:55,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:28:55,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 17:28:55,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_cs_t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_cs_t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3987 more)] === [2022-10-15 17:28:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash -992050870, now seen corresponding path program 1 times [2022-10-15 17:28:55,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:55,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121468351] [2022-10-15 17:28:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:55,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:55,518 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 17:28:55,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:55,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121468351] [2022-10-15 17:28:55,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121468351] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:55,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:55,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:55,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17444140] [2022-10-15 17:28:55,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:55,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:55,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:55,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:55,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:55,522 INFO L87 Difference]: Start difference. First operand 7946 states and 8524 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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)