/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_nxt.2.M1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:26:43,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:26:43,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:26:43,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:26:43,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:26:43,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:26:43,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:26:43,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:26:43,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:26:43,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:26:43,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:26:43,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:26:43,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:26:43,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:26:43,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:26:43,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:26:43,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:26:43,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:26:43,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:26:43,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:26:43,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:26:43,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:26:43,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:26:43,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:26:43,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:26:43,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:26:43,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:26:43,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:26:43,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:26:43,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:26:43,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:26:43,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:26:43,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:26:43,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:26:43,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:26:43,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:26:43,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:26:43,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:26:43,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:26:43,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:26:43,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:26:43,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:26:43,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:26:43,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:26:43,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:26:43,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:26:43,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:26:43,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:26:43,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:26:43,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:26:43,451 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:26:43,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:26:43,453 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:26:43,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:26:43,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:26:43,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:26:43,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:26:43,455 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:26:43,455 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:26:43,455 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:26:43,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:26:43,456 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:26:43,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:26:43,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:26:43,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:26:43,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:26:43,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:26:43,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:26:43,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:26:43,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:26:43,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:26:43,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:26:43,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:26:43,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:26:44,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:26:44,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:26:44,015 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:26:44,016 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:26:44,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2022-10-15 17:26:44,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64811dd20/856d81bb4de14624bc6e7b31ba9e64bf/FLAGd4a3c5fb9 [2022-10-15 17:26:44,974 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:26:44,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2022-10-15 17:26:45,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64811dd20/856d81bb4de14624bc6e7b31ba9e64bf/FLAGd4a3c5fb9 [2022-10-15 17:26:45,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64811dd20/856d81bb4de14624bc6e7b31ba9e64bf [2022-10-15 17:26:45,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:26:45,172 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:26:45,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:26:45,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:26:45,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:26:45,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:26:45" (1/1) ... [2022-10-15 17:26:45,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181023db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:45, skipping insertion in model container [2022-10-15 17:26:45,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:26:45" (1/1) ... [2022-10-15 17:26:45,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:26:45,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:26:45,635 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_nxt.2.M1-2.c[1937,1950] [2022-10-15 17:26:46,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:26:46,327 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:26:46,348 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_nxt.2.M1-2.c[1937,1950] [2022-10-15 17:26:46,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:26:46,571 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:26:46,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46 WrapperNode [2022-10-15 17:26:46,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:26:46,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:26:46,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:26:46,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:26:46,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:46,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:46,893 INFO L138 Inliner]: procedures = 58, calls = 1758, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3840 [2022-10-15 17:26:46,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:26:46,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:26:46,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:26:46,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:26:46,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:46,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:46,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:46,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:47,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:47,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:47,132 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:47,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:47,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:26:47,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:26:47,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:26:47,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:26:47,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (1/1) ... [2022-10-15 17:26:47,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:26:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:26:47,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:26:47,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:26:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:26:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-15 17:26:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-15 17:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:26:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-15 17:26:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-15 17:26:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-15 17:26:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-15 17:26:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-15 17:26:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-15 17:26:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:26:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-15 17:26:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-15 17:26:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-15 17:26:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-15 17:26:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:26:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:26:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:26:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:26:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:26:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-15 17:26:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-15 17:26:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:26:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-15 17:26:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-15 17:26:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-15 17:26:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-15 17:26:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 17:26:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 17:26:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:26:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:26:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:26:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-15 17:26:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-15 17:26:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-15 17:26:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-15 17:26:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:26:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:26:47,959 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:26:47,962 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:26:55,283 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:26:55,330 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:26:55,330 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 17:26:55,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:26:55 BoogieIcfgContainer [2022-10-15 17:26:55,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:26:55,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:26:55,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:26:55,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:26:55,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:26:45" (1/3) ... [2022-10-15 17:26:55,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f485cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:26:55, skipping insertion in model container [2022-10-15 17:26:55,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:26:46" (2/3) ... [2022-10-15 17:26:55,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f485cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:26:55, skipping insertion in model container [2022-10-15 17:26:55,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:26:55" (3/3) ... [2022-10-15 17:26:55,357 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-2.c [2022-10-15 17:26:55,385 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:26:55,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2492 error locations. [2022-10-15 17:26:55,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:26:55,556 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;@4b11103e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:26:55,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2492 error locations. [2022-10-15 17:26:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 5091 states, 2163 states have (on average 2.251964863615349) internal successors, (4871), 4686 states have internal predecessors, (4871), 419 states have call successors, (419), 16 states have call predecessors, (419), 16 states have return successors, (419), 417 states have call predecessors, (419), 419 states have call successors, (419) [2022-10-15 17:26:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:26:55,588 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:26:55,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:26:55,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_nxtway_gs_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_nxtway_gs_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2490 more)] === [2022-10-15 17:26:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:26:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash 484651, now seen corresponding path program 1 times [2022-10-15 17:26:55,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:26:55,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438135284] [2022-10-15 17:26:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:26:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:26:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:26:56,094 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 17:26:56,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:26:56,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438135284] [2022-10-15 17:26:56,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438135284] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:26:56,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:26:56,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:26:56,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075655090] [2022-10-15 17:26:56,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:26:56,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:26:56,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:26:56,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:26:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:26:56,241 INFO L87 Difference]: Start difference. First operand has 5091 states, 2163 states have (on average 2.251964863615349) internal successors, (4871), 4686 states have internal predecessors, (4871), 419 states have call successors, (419), 16 states have call predecessors, (419), 16 states have return successors, (419), 417 states have call predecessors, (419), 419 states have call successors, (419) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:27:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:27:01,500 INFO L93 Difference]: Finished difference Result 6114 states and 6904 transitions. [2022-10-15 17:27:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:27:01,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-15 17:27:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:27:01,584 INFO L225 Difference]: With dead ends: 6114 [2022-10-15 17:27:01,584 INFO L226 Difference]: Without dead ends: 6110 [2022-10-15 17:27:01,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:01,597 INFO L413 NwaCegarLoop]: 3317 mSDtfsCounter, 5533 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5533 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:27:01,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5533 Valid, 4193 Invalid, 3038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-10-15 17:27:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6110 states. [2022-10-15 17:27:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6110 to 5608. [2022-10-15 17:27:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5608 states, 2593 states have (on average 2.1854994215194754) internal successors, (5667), 5113 states have internal predecessors, (5667), 524 states have call successors, (524), 28 states have call predecessors, (524), 27 states have return successors, (524), 494 states have call predecessors, (524), 524 states have call successors, (524) [2022-10-15 17:27:02,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5608 states to 5608 states and 6715 transitions. [2022-10-15 17:27:02,376 INFO L78 Accepts]: Start accepts. Automaton has 5608 states and 6715 transitions. Word has length 3 [2022-10-15 17:27:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:27:02,377 INFO L495 AbstractCegarLoop]: Abstraction has 5608 states and 6715 transitions. [2022-10-15 17:27:02,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:27:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5608 states and 6715 transitions. [2022-10-15 17:27:02,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:27:02,380 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:02,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:27:02,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:27:02,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_nxtway_gs_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_nxtway_gs_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2490 more)] === [2022-10-15 17:27:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash 484652, now seen corresponding path program 1 times [2022-10-15 17:27:02,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:02,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205577353] [2022-10-15 17:27:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:02,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:27:02,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:02,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205577353] [2022-10-15 17:27:02,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205577353] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:02,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:02,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:02,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111678516] [2022-10-15 17:27:02,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:02,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:02,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:02,626 INFO L87 Difference]: Start difference. First operand 5608 states and 6715 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:27:07,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:27:07,462 INFO L93 Difference]: Finished difference Result 6040 states and 6916 transitions. [2022-10-15 17:27:07,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:27:07,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-15 17:27:07,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:27:07,499 INFO L225 Difference]: With dead ends: 6040 [2022-10-15 17:27:07,500 INFO L226 Difference]: Without dead ends: 6040 [2022-10-15 17:27:07,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:07,502 INFO L413 NwaCegarLoop]: 3414 mSDtfsCounter, 5253 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5253 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:27:07,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5253 Valid, 4292 Invalid, 2907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-10-15 17:27:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2022-10-15 17:27:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 5633. [2022-10-15 17:27:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5633 states, 2631 states have (on average 2.1569745343975675) internal successors, (5675), 5124 states have internal predecessors, (5675), 533 states have call successors, (533), 33 states have call predecessors, (533), 32 states have return successors, (533), 503 states have call predecessors, (533), 533 states have call successors, (533) [2022-10-15 17:27:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5633 states to 5633 states and 6741 transitions. [2022-10-15 17:27:07,843 INFO L78 Accepts]: Start accepts. Automaton has 5633 states and 6741 transitions. Word has length 3 [2022-10-15 17:27:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:27:07,844 INFO L495 AbstractCegarLoop]: Abstraction has 5633 states and 6741 transitions. [2022-10-15 17:27:07,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:27:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5633 states and 6741 transitions. [2022-10-15 17:27:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:27:07,845 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:07,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:27:07,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:27:07,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_nxtway_gs_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_nxtway_gs_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2490 more)] === [2022-10-15 17:27:07,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:07,846 INFO L85 PathProgramCache]: Analyzing trace with hash 15024615, now seen corresponding path program 1 times [2022-10-15 17:27:07,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:07,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126570100] [2022-10-15 17:27:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:07,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:27:07,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:07,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126570100] [2022-10-15 17:27:07,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126570100] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:07,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:07,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:07,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7175719] [2022-10-15 17:27:07,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:07,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:07,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:07,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:07,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:07,944 INFO L87 Difference]: Start difference. First operand 5633 states and 6741 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 17:27:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:27:12,405 INFO L93 Difference]: Finished difference Result 6054 states and 6870 transitions. [2022-10-15 17:27:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:27:12,406 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 17:27:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:27:12,444 INFO L225 Difference]: With dead ends: 6054 [2022-10-15 17:27:12,444 INFO L226 Difference]: Without dead ends: 6054 [2022-10-15 17:27:12,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:12,447 INFO L413 NwaCegarLoop]: 3794 mSDtfsCounter, 5422 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 2926 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5422 SdHoareTripleChecker+Valid, 4668 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:27:12,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5422 Valid, 4668 Invalid, 2982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2926 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-10-15 17:27:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6054 states. [2022-10-15 17:27:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6054 to 5606. [2022-10-15 17:27:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 2631 states have (on average 2.135689851767389) internal successors, (5619), 5097 states have internal predecessors, (5619), 533 states have call successors, (533), 33 states have call predecessors, (533), 32 states have return successors, (533), 503 states have call predecessors, (533), 533 states have call successors, (533) [2022-10-15 17:27:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 6685 transitions. [2022-10-15 17:27:12,740 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 6685 transitions. Word has length 4 [2022-10-15 17:27:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:27:12,740 INFO L495 AbstractCegarLoop]: Abstraction has 5606 states and 6685 transitions. [2022-10-15 17:27:12,741 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 17:27:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 6685 transitions. [2022-10-15 17:27:12,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:27:12,741 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:12,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:27:12,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:27:12,742 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_nxtway_gs_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_nxtway_gs_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2490 more)] === [2022-10-15 17:27:12,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:12,743 INFO L85 PathProgramCache]: Analyzing trace with hash 15024616, now seen corresponding path program 1 times [2022-10-15 17:27:12,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:12,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690451804] [2022-10-15 17:27:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:12,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:27:12,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:12,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690451804] [2022-10-15 17:27:12,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690451804] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:12,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:12,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:12,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166707702] [2022-10-15 17:27:12,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:12,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:12,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:12,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:12,940 INFO L87 Difference]: Start difference. First operand 5606 states and 6685 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 17:27:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:27:18,711 INFO L93 Difference]: Finished difference Result 5933 states and 6807 transitions. [2022-10-15 17:27:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:27:18,712 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 17:27:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:27:18,748 INFO L225 Difference]: With dead ends: 5933 [2022-10-15 17:27:18,749 INFO L226 Difference]: Without dead ends: 5933 [2022-10-15 17:27:18,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:18,751 INFO L413 NwaCegarLoop]: 3413 mSDtfsCounter, 5145 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5145 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:27:18,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5145 Valid, 4290 Invalid, 2855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-10-15 17:27:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5933 states. [2022-10-15 17:27:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5933 to 5579. [2022-10-15 17:27:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5579 states, 2631 states have (on average 2.115545419992398) internal successors, (5566), 5070 states have internal predecessors, (5566), 533 states have call successors, (533), 33 states have call predecessors, (533), 32 states have return successors, (533), 503 states have call predecessors, (533), 533 states have call successors, (533) [2022-10-15 17:27:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5579 states to 5579 states and 6632 transitions. [2022-10-15 17:27:19,055 INFO L78 Accepts]: Start accepts. Automaton has 5579 states and 6632 transitions. Word has length 4 [2022-10-15 17:27:19,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:27:19,055 INFO L495 AbstractCegarLoop]: Abstraction has 5579 states and 6632 transitions. [2022-10-15 17:27:19,056 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 17:27:19,057 INFO L276 IsEmpty]: Start isEmpty. Operand 5579 states and 6632 transitions. [2022-10-15 17:27:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 17:27:19,057 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:19,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:27:19,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:27:19,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_nxtway_gs_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_nxtway_gs_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2490 more)] === [2022-10-15 17:27:19,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:19,059 INFO L85 PathProgramCache]: Analyzing trace with hash 922141680, now seen corresponding path program 1 times [2022-10-15 17:27:19,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:19,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534887154] [2022-10-15 17:27:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:19,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:27:19,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:19,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534887154] [2022-10-15 17:27:19,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534887154] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:19,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:19,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:19,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737166823] [2022-10-15 17:27:19,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:19,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:19,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:19,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:19,229 INFO L87 Difference]: Start difference. First operand 5579 states and 6632 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:27:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:27:23,849 INFO L93 Difference]: Finished difference Result 5923 states and 6739 transitions. [2022-10-15 17:27:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:27:23,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-10-15 17:27:23,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:27:23,883 INFO L225 Difference]: With dead ends: 5923 [2022-10-15 17:27:23,883 INFO L226 Difference]: Without dead ends: 5923 [2022-10-15 17:27:23,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:23,886 INFO L413 NwaCegarLoop]: 3718 mSDtfsCounter, 5288 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 2843 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:27:23,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5288 Valid, 4620 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2843 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-10-15 17:27:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5923 states. [2022-10-15 17:27:24,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5923 to 5501. [2022-10-15 17:27:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5501 states, 2631 states have (on average 2.085898897757507) internal successors, (5488), 4992 states have internal predecessors, (5488), 533 states have call successors, (533), 33 states have call predecessors, (533), 32 states have return successors, (533), 503 states have call predecessors, (533), 533 states have call successors, (533) [2022-10-15 17:27:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5501 states to 5501 states and 6554 transitions. [2022-10-15 17:27:24,233 INFO L78 Accepts]: Start accepts. Automaton has 5501 states and 6554 transitions. Word has length 7 [2022-10-15 17:27:24,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:27:24,234 INFO L495 AbstractCegarLoop]: Abstraction has 5501 states and 6554 transitions. [2022-10-15 17:27:24,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:27:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5501 states and 6554 transitions. [2022-10-15 17:27:24,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 17:27:24,238 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:24,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:27:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:27:24,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_nxtway_gs_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_nxtway_gs_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2490 more)] === [2022-10-15 17:27:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash 922141681, now seen corresponding path program 1 times [2022-10-15 17:27:24,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:24,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275258779] [2022-10-15 17:27:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:24,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:27:24,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:24,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275258779] [2022-10-15 17:27:24,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275258779] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:24,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:24,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:24,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29156696] [2022-10-15 17:27:24,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:24,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:24,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:24,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:24,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:24,439 INFO L87 Difference]: Start difference. First operand 5501 states and 6554 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:27:31,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:27:31,538 INFO L93 Difference]: Finished difference Result 6479 states and 7775 transitions. [2022-10-15 17:27:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:27:31,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-10-15 17:27:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:27:31,581 INFO L225 Difference]: With dead ends: 6479 [2022-10-15 17:27:31,581 INFO L226 Difference]: Without dead ends: 6479 [2022-10-15 17:27:31,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:31,588 INFO L413 NwaCegarLoop]: 3282 mSDtfsCounter, 5341 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5341 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:27:31,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5341 Valid, 4187 Invalid, 2848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-10-15 17:27:31,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6479 states. [2022-10-15 17:27:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6479 to 5981. [2022-10-15 17:27:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5981 states, 3051 states have (on average 2.032776138970829) internal successors, (6202), 5360 states have internal predecessors, (6202), 659 states have call successors, (659), 45 states have call predecessors, (659), 44 states have return successors, (706), 627 states have call predecessors, (706), 659 states have call successors, (706) [2022-10-15 17:27:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5981 states to 5981 states and 7567 transitions. [2022-10-15 17:27:31,898 INFO L78 Accepts]: Start accepts. Automaton has 5981 states and 7567 transitions. Word has length 7 [2022-10-15 17:27:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:27:31,899 INFO L495 AbstractCegarLoop]: Abstraction has 5981 states and 7567 transitions. [2022-10-15 17:27:31,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:27:31,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5981 states and 7567 transitions. [2022-10-15 17:27:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 17:27:31,900 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:31,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:27:31,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 17:27:31,900 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_write_nxtway_gs_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_write_nxtway_gs_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2490 more)] === [2022-10-15 17:27:31,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:31,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1414905713, now seen corresponding path program 1 times [2022-10-15 17:27:31,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:31,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422498913] [2022-10-15 17:27:31,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:31,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:27:32,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:32,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422498913] [2022-10-15 17:27:32,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422498913] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:32,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:32,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:32,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293229914] [2022-10-15 17:27:32,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:32,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:32,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:32,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:32,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:32,066 INFO L87 Difference]: Start difference. First operand 5981 states and 7567 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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)