/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:25:27,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:25:27,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:25:27,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:25:27,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:25:27,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:25:27,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:25:27,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:25:27,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:25:27,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:25:27,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:25:27,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:25:27,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:25:27,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:25:27,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:25:27,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:25:27,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:25:27,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:25:27,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:25:27,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:25:27,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:25:27,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:25:27,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:25:27,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:25:27,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:25:27,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:25:27,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:25:27,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:25:27,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:25:27,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:25:27,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:25:27,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:25:27,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:25:27,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:25:27,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:25:27,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:25:27,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:25:27,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:25:27,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:25:27,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:25:27,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:25:27,300 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 17:25:27,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:25:27,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:25:27,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:25:27,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:25:27,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:25:27,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:25:27,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:25:27,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:25:27,331 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:25:27,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:25:27,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:25:27,332 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:25:27,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:25:27,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:25:27,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:25:27,332 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:25:27,333 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:25:27,333 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:25:27,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:25:27,333 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:25:27,334 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:25:27,334 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:25:27,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:25:27,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:25:27,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:25:27,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:25:27,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:25:27,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:25:27,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:25:27,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:25:27,336 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:25:27,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:25:27,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:25:27,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:25:27,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:25:27,728 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:25:27,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-1.c [2022-10-15 17:25:27,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c70490cf/9b47d083dba144d5b343ec2e4ca9002a/FLAG905c21e8b [2022-10-15 17:25:28,645 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:25:28,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-1.c [2022-10-15 17:25:28,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c70490cf/9b47d083dba144d5b343ec2e4ca9002a/FLAG905c21e8b [2022-10-15 17:25:28,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c70490cf/9b47d083dba144d5b343ec2e4ca9002a [2022-10-15 17:25:28,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:25:28,769 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:25:28,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:25:28,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:25:28,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:25:28,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:25:28" (1/1) ... [2022-10-15 17:25:28,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3e7965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:28, skipping insertion in model container [2022-10-15 17:25:28,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:25:28" (1/1) ... [2022-10-15 17:25:28,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:25:28,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:25:29,087 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-1.c[2062,2075] [2022-10-15 17:25:29,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:25:29,842 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:25:29,861 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-1.c[2062,2075] [2022-10-15 17:25:30,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:25:30,130 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:25:30,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30 WrapperNode [2022-10-15 17:25:30,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:25:30,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:25:30,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:25:30,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:25:30,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:30,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:30,543 INFO L138 Inliner]: procedures = 72, calls = 2681, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 5631 [2022-10-15 17:25:30,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:25:30,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:25:30,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:25:30,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:25:30,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:30,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:30,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:30,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:30,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:31,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:31,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:31,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:31,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:25:31,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:25:31,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:25:31,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:25:31,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (1/1) ... [2022-10-15 17:25:31,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:25:31,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:25:31,215 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 17:25:31,224 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 17:25:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:25:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_trans [2022-10-15 17:25:31,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_trans [2022-10-15 17:25:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-10-15 17:25:31,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-10-15 17:25:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-15 17:25:31,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-15 17:25:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:25:31,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:25:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:25:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-15 17:25:31,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-15 17:25:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-15 17:25:31,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-15 17:25:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-10-15 17:25:31,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-10-15 17:25:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-15 17:25:31,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-15 17:25:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:25:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-15 17:25:31,305 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-15 17:25:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-15 17:25:31,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-15 17:25:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-10-15 17:25:31,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-10-15 17:25:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-10-15 17:25:31,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-10-15 17:25:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:25:31,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:25:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:25:31,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:25:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-15 17:25:31,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-15 17:25:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:25:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:25:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-15 17:25:31,309 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-15 17:25:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-15 17:25:31,309 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-15 17:25:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-10-15 17:25:31,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-10-15 17:25:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-15 17:25:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-15 17:25:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 17:25:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 17:25:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:25:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:25:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:25:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-15 17:25:31,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-15 17:25:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-15 17:25:31,311 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-15 17:25:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:25:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:25:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-10-15 17:25:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-10-15 17:25:31,905 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:25:31,908 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:25:40,086 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:25:40,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:25:40,129 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 17:25:40,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:25:40 BoogieIcfgContainer [2022-10-15 17:25:40,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:25:40,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:25:40,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:25:40,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:25:40,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:25:28" (1/3) ... [2022-10-15 17:25:40,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c524910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:25:40, skipping insertion in model container [2022-10-15 17:25:40,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:25:30" (2/3) ... [2022-10-15 17:25:40,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c524910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:25:40, skipping insertion in model container [2022-10-15 17:25:40,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:25:40" (3/3) ... [2022-10-15 17:25:40,154 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_aso.2.M1-1.c [2022-10-15 17:25:40,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:25:40,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3952 error locations. [2022-10-15 17:25:40,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:25:40,358 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;@31dd3061, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:25:40,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3952 error locations. [2022-10-15 17:25:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 8034 states, 3460 states have (on average 2.217341040462428) internal successors, (7672), 7443 states have internal predecessors, (7672), 597 states have call successors, (597), 24 states have call predecessors, (597), 24 states have return successors, (597), 595 states have call predecessors, (597), 597 states have call successors, (597) [2022-10-15 17:25:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:25:40,390 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:25:40,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:25:40,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_transErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_transErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3950 more)] === [2022-10-15 17:25:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:25:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash 871921, now seen corresponding path program 1 times [2022-10-15 17:25:40,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:25:40,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699732613] [2022-10-15 17:25:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:25:40,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:25:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:25:41,008 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 17:25:41,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:25:41,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699732613] [2022-10-15 17:25:41,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699732613] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:25:41,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:25:41,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:25:41,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202379854] [2022-10-15 17:25:41,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:25:41,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:25:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:25:41,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:25:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:25:41,079 INFO L87 Difference]: Start difference. First operand has 8034 states, 3460 states have (on average 2.217341040462428) internal successors, (7672), 7443 states have internal predecessors, (7672), 597 states have call successors, (597), 24 states have call predecessors, (597), 24 states have return successors, (597), 595 states have call predecessors, (597), 597 states have call successors, (597) 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 17:25:48,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:25:48,846 INFO L93 Difference]: Finished difference Result 10432 states and 11671 transitions. [2022-10-15 17:25:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:25:48,849 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 17:25:48,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:25:48,952 INFO L225 Difference]: With dead ends: 10432 [2022-10-15 17:25:48,953 INFO L226 Difference]: Without dead ends: 10428 [2022-10-15 17:25:48,955 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 17:25:48,960 INFO L413 NwaCegarLoop]: 5223 mSDtfsCounter, 8746 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 5067 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8746 SdHoareTripleChecker+Valid, 7024 SdHoareTripleChecker+Invalid, 5121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:25:48,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8746 Valid, 7024 Invalid, 5121 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 5067 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-10-15 17:25:49,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10428 states. [2022-10-15 17:25:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10428 to 9301. [2022-10-15 17:25:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9301 states, 4432 states have (on average 2.177797833935018) internal successors, (9652), 8414 states have internal predecessors, (9652), 903 states have call successors, (903), 41 states have call predecessors, (903), 41 states have return successors, (927), 897 states have call predecessors, (927), 903 states have call successors, (927) [2022-10-15 17:25:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9301 states to 9301 states and 11482 transitions. [2022-10-15 17:25:50,088 INFO L78 Accepts]: Start accepts. Automaton has 9301 states and 11482 transitions. Word has length 3 [2022-10-15 17:25:50,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:25:50,089 INFO L495 AbstractCegarLoop]: Abstraction has 9301 states and 11482 transitions. [2022-10-15 17:25:50,089 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 17:25:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9301 states and 11482 transitions. [2022-10-15 17:25:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:25:50,090 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:25:50,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:25:50,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:25:50,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_transErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_transErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3950 more)] === [2022-10-15 17:25:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:25:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash 871922, now seen corresponding path program 1 times [2022-10-15 17:25:50,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:25:50,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053493211] [2022-10-15 17:25:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:25:50,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:25:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:25:50,575 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 17:25:50,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:25:50,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053493211] [2022-10-15 17:25:50,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053493211] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:25:50,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:25:50,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:25:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272393297] [2022-10-15 17:25:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:25:50,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:25:50,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:25:50,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:25:50,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:25:50,589 INFO L87 Difference]: Start difference. First operand 9301 states and 11482 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 17:26:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:26:00,504 INFO L93 Difference]: Finished difference Result 10412 states and 11749 transitions. [2022-10-15 17:26:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:26:00,505 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 17:26:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:26:00,572 INFO L225 Difference]: With dead ends: 10412 [2022-10-15 17:26:00,572 INFO L226 Difference]: Without dead ends: 10412 [2022-10-15 17:26:00,572 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 17:26:00,574 INFO L413 NwaCegarLoop]: 5280 mSDtfsCounter, 8478 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 4950 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8478 SdHoareTripleChecker+Valid, 7083 SdHoareTripleChecker+Invalid, 5002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:26:00,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8478 Valid, 7083 Invalid, 5002 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 4950 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-10-15 17:26:00,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10412 states. [2022-10-15 17:26:01,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10412 to 9371. [2022-10-15 17:26:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9371 states, 4503 states have (on average 2.155896069287142) internal successors, (9708), 8458 states have internal predecessors, (9708), 921 states have call successors, (921), 49 states have call predecessors, (921), 49 states have return successors, (945), 915 states have call predecessors, (945), 921 states have call successors, (945) [2022-10-15 17:26:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9371 states to 9371 states and 11574 transitions. [2022-10-15 17:26:01,309 INFO L78 Accepts]: Start accepts. Automaton has 9371 states and 11574 transitions. Word has length 3 [2022-10-15 17:26:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:26:01,310 INFO L495 AbstractCegarLoop]: Abstraction has 9371 states and 11574 transitions. [2022-10-15 17:26:01,311 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 17:26:01,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9371 states and 11574 transitions. [2022-10-15 17:26:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:26:01,311 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:26:01,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:26:01,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:26:01,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_transErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_transErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3950 more)] === [2022-10-15 17:26:01,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:26:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash 27030375, now seen corresponding path program 1 times [2022-10-15 17:26:01,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:26:01,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630612576] [2022-10-15 17:26:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:26:01,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:26:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:26:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:26:01,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:26:01,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630612576] [2022-10-15 17:26:01,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630612576] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:26:01,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:26:01,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:26:01,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265574287] [2022-10-15 17:26:01,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:26:01,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:26:01,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:26:01,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:26:01,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:26:01,492 INFO L87 Difference]: Start difference. First operand 9371 states and 11574 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 17:26:09,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:26:09,224 INFO L93 Difference]: Finished difference Result 10417 states and 11704 transitions. [2022-10-15 17:26:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:26:09,224 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 17:26:09,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:26:09,273 INFO L225 Difference]: With dead ends: 10417 [2022-10-15 17:26:09,273 INFO L226 Difference]: Without dead ends: 10417 [2022-10-15 17:26:09,274 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 17:26:09,275 INFO L413 NwaCegarLoop]: 5216 mSDtfsCounter, 8635 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 5010 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8635 SdHoareTripleChecker+Valid, 7018 SdHoareTripleChecker+Invalid, 5066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 5010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:26:09,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8635 Valid, 7018 Invalid, 5066 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 5010 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-10-15 17:26:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10417 states. [2022-10-15 17:26:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10417 to 9342. [2022-10-15 17:26:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9342 states, 4503 states have (on average 2.143681989784588) internal successors, (9653), 8429 states have internal predecessors, (9653), 921 states have call successors, (921), 49 states have call predecessors, (921), 49 states have return successors, (945), 915 states have call predecessors, (945), 921 states have call successors, (945) [2022-10-15 17:26:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9342 states to 9342 states and 11519 transitions. [2022-10-15 17:26:09,916 INFO L78 Accepts]: Start accepts. Automaton has 9342 states and 11519 transitions. Word has length 4 [2022-10-15 17:26:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:26:09,917 INFO L495 AbstractCegarLoop]: Abstraction has 9342 states and 11519 transitions. [2022-10-15 17:26:09,920 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 17:26:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9342 states and 11519 transitions. [2022-10-15 17:26:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:26:09,921 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:26:09,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:26:09,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:26:09,922 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_transErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_transErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3950 more)] === [2022-10-15 17:26:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:26:09,930 INFO L85 PathProgramCache]: Analyzing trace with hash 27030376, now seen corresponding path program 1 times [2022-10-15 17:26:09,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:26:09,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073924635] [2022-10-15 17:26:09,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:26:09,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:26:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:26:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:26:10,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:26:10,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073924635] [2022-10-15 17:26:10,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073924635] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:26:10,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:26:10,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:26:10,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277063087] [2022-10-15 17:26:10,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:26:10,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:26:10,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:26:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:26:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:26:10,198 INFO L87 Difference]: Start difference. First operand 9342 states and 11519 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)