/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:28:19,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:28:19,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:28:19,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:28:19,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:28:19,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:28:19,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:28:19,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:28:19,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:28:19,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:28:19,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:28:19,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:28:19,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:28:19,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:28:19,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:28:19,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:28:19,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:28:19,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:28:19,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:28:19,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:28:19,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:28:19,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:28:19,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:28:19,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:28:19,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:28:19,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:28:19,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:28:19,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:28:19,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:28:19,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:28:19,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:28:19,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:28:19,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:28:19,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:28:19,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:28:19,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:28:19,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:28:19,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:28:19,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:28:19,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:28:19,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:28:19,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:28:19,651 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:28:19,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:28:19,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:28:19,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:28:19,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:28:19,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:28:19,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:28:19,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:28:19,658 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:28:19,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:28:19,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:28:19,660 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:28:19,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:28:19,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:28:19,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:28:19,661 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:28:19,661 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:28:19,661 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:28:19,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:28:19,661 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:28:19,662 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:28:19,662 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:28:19,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:28:19,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:28:19,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:28:19,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:28:19,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:28:19,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:28:19,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:28:19,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:28:19,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:28:20,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:28:20,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:28:20,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:28:20,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:28:20,174 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:28:20,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2022-10-15 17:28:20,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5e8efdd/a2a25c3e008c467da0c82838e037afe0/FLAG4cbbcbcb9 [2022-10-15 17:28:21,180 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:28:21,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2022-10-15 17:28:21,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5e8efdd/a2a25c3e008c467da0c82838e037afe0/FLAG4cbbcbcb9 [2022-10-15 17:28:21,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5e8efdd/a2a25c3e008c467da0c82838e037afe0 [2022-10-15 17:28:21,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:28:21,316 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:28:21,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:28:21,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:28:21,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:28:21,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:28:21" (1/1) ... [2022-10-15 17:28:21,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad8f85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:21, skipping insertion in model container [2022-10-15 17:28:21,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:28:21" (1/1) ... [2022-10-15 17:28:21,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:28:21,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:28:21,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c[1510,1523] [2022-10-15 17:28:22,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:28:22,211 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:28:22,229 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c[1510,1523] [2022-10-15 17:28:22,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:28:22,481 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:28:22,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22 WrapperNode [2022-10-15 17:28:22,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:28:22,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:28:22,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:28:22,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:28:22,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:22,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:22,750 INFO L138 Inliner]: procedures = 55, calls = 2046, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 3968 [2022-10-15 17:28:22,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:28:22,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:28:22,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:28:22,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:28:22,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:22,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:22,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:22,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:22,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:23,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:23,032 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:23,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:23,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:28:23,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:28:23,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:28:23,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:28:23,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (1/1) ... [2022-10-15 17:28:23,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:28:23,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:28:23,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:28:23,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:28:23,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:28:23,235 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-15 17:28:23,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-15 17:28:23,236 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:28:23,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:28:23,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:28:23,236 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-15 17:28:23,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-15 17:28:23,237 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-15 17:28:23,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-15 17:28:23,237 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-15 17:28:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-15 17:28:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:28:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-15 17:28:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-15 17:28:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-15 17:28:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-15 17:28:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:28:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:28:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:28:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:28:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:28:23,306 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-10-15 17:28:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-10-15 17:28:23,306 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-15 17:28:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-15 17:28:23,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:28:23,306 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-15 17:28:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-15 17:28:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 17:28:23,307 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 17:28:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:28:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:28:23,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:28:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-15 17:28:23,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-15 17:28:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-15 17:28:23,311 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-15 17:28:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:28:23,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:28:23,966 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:28:23,970 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:28:30,887 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:28:30,922 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:28:30,922 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 17:28:30,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:28:30 BoogieIcfgContainer [2022-10-15 17:28:30,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:28:30,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:28:30,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:28:30,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:28:30,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:28:21" (1/3) ... [2022-10-15 17:28:30,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f71f9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:28:30, skipping insertion in model container [2022-10-15 17:28:30,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:22" (2/3) ... [2022-10-15 17:28:30,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f71f9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:28:30, skipping insertion in model container [2022-10-15 17:28:30,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:28:30" (3/3) ... [2022-10-15 17:28:30,945 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-1.c [2022-10-15 17:28:30,972 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:28:30,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2762 error locations. [2022-10-15 17:28:31,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:28:31,133 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;@4a655ef8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:28:31,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2762 error locations. [2022-10-15 17:28:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 5971 states, 2579 states have (on average 2.1566498642884837) internal successors, (5562), 5345 states have internal predecessors, (5562), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 611 states have call predecessors, (613), 613 states have call successors, (613) [2022-10-15 17:28:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:28:31,165 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:31,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:28:31,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2760 more)] === [2022-10-15 17:28:31,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash 6832900, now seen corresponding path program 1 times [2022-10-15 17:28:31,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:31,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825750386] [2022-10-15 17:28:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:31,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:28:31,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:31,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825750386] [2022-10-15 17:28:31,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825750386] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:31,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:31,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:31,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491099105] [2022-10-15 17:28:31,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:31,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:31,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:31,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:31,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:31,802 INFO L87 Difference]: Start difference. First operand has 5971 states, 2579 states have (on average 2.1566498642884837) internal successors, (5562), 5345 states have internal predecessors, (5562), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 611 states have call predecessors, (613), 613 states have call successors, (613) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:28:38,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:38,952 INFO L93 Difference]: Finished difference Result 9342 states and 10533 transitions. [2022-10-15 17:28:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:38,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-15 17:28:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:39,057 INFO L225 Difference]: With dead ends: 9342 [2022-10-15 17:28:39,058 INFO L226 Difference]: Without dead ends: 9340 [2022-10-15 17:28:39,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:39,068 INFO L413 NwaCegarLoop]: 5446 mSDtfsCounter, 3752 mSDsluCounter, 3853 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 9299 SdHoareTripleChecker+Invalid, 4588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:39,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3752 Valid, 9299 Invalid, 4588 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [29 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-10-15 17:28:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2022-10-15 17:28:40,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 7708. [2022-10-15 17:28:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7708 states, 4008 states have (on average 2.153692614770459) internal successors, (8632), 6775 states have internal predecessors, (8632), 912 states have call successors, (912), 29 states have call predecessors, (912), 27 states have return successors, (912), 905 states have call predecessors, (912), 912 states have call successors, (912) [2022-10-15 17:28:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 10456 transitions. [2022-10-15 17:28:40,573 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 10456 transitions. Word has length 3 [2022-10-15 17:28:40,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:40,573 INFO L495 AbstractCegarLoop]: Abstraction has 7708 states and 10456 transitions. [2022-10-15 17:28:40,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:28:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 10456 transitions. [2022-10-15 17:28:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:28:40,578 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:40,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:28:40,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:28:40,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2760 more)] === [2022-10-15 17:28:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:40,580 INFO L85 PathProgramCache]: Analyzing trace with hash 6832901, now seen corresponding path program 1 times [2022-10-15 17:28:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:40,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045786187] [2022-10-15 17:28:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:28:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:40,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045786187] [2022-10-15 17:28:40,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045786187] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:40,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:40,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:40,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155857127] [2022-10-15 17:28:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:40,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:40,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:40,770 INFO L87 Difference]: Start difference. First operand 7708 states and 10456 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:28:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:47,889 INFO L93 Difference]: Finished difference Result 9027 states and 10432 transitions. [2022-10-15 17:28:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:47,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-15 17:28:47,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:47,945 INFO L225 Difference]: With dead ends: 9027 [2022-10-15 17:28:47,946 INFO L226 Difference]: Without dead ends: 9027 [2022-10-15 17:28:47,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:47,948 INFO L413 NwaCegarLoop]: 5658 mSDtfsCounter, 2922 mSDsluCounter, 3855 mSDsCounter, 0 mSdLazyCounter, 4264 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 9513 SdHoareTripleChecker+Invalid, 4290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:47,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2922 Valid, 9513 Invalid, 4290 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 4264 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-10-15 17:28:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9027 states. [2022-10-15 17:28:48,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9027 to 7711. [2022-10-15 17:28:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7711 states, 4011 states have (on average 2.1460982298678632) internal successors, (8608), 6777 states have internal predecessors, (8608), 912 states have call successors, (912), 30 states have call predecessors, (912), 28 states have return successors, (912), 905 states have call predecessors, (912), 912 states have call successors, (912) [2022-10-15 17:28:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 10432 transitions. [2022-10-15 17:28:48,883 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 10432 transitions. Word has length 3 [2022-10-15 17:28:48,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:48,884 INFO L495 AbstractCegarLoop]: Abstraction has 7711 states and 10432 transitions. [2022-10-15 17:28:48,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:28:48,884 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 10432 transitions. [2022-10-15 17:28:48,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:28:48,885 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:48,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:28:48,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:28:48,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2760 more)] === [2022-10-15 17:28:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash 211826727, now seen corresponding path program 1 times [2022-10-15 17:28:48,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:48,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360476650] [2022-10-15 17:28:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:48,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:28:48,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:48,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360476650] [2022-10-15 17:28:48,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360476650] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:48,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:48,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:48,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729422478] [2022-10-15 17:28:48,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:48,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:48,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:48,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:48,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:48,993 INFO L87 Difference]: Start difference. First operand 7711 states and 10432 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:28:55,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:55,863 INFO L93 Difference]: Finished difference Result 9288 states and 10478 transitions. [2022-10-15 17:28:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:55,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 17:28:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:55,917 INFO L225 Difference]: With dead ends: 9288 [2022-10-15 17:28:55,918 INFO L226 Difference]: Without dead ends: 9288 [2022-10-15 17:28:55,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:55,920 INFO L413 NwaCegarLoop]: 5470 mSDtfsCounter, 3695 mSDsluCounter, 3851 mSDsCounter, 0 mSdLazyCounter, 4531 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3695 SdHoareTripleChecker+Valid, 9321 SdHoareTripleChecker+Invalid, 4561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:55,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3695 Valid, 9321 Invalid, 4561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 4531 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-10-15 17:28:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9288 states. [2022-10-15 17:28:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9288 to 7710. [2022-10-15 17:28:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7710 states, 4011 states have (on average 2.138868112690102) internal successors, (8579), 6776 states have internal predecessors, (8579), 912 states have call successors, (912), 30 states have call predecessors, (912), 28 states have return successors, (912), 905 states have call predecessors, (912), 912 states have call successors, (912) [2022-10-15 17:28:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 10403 transitions. [2022-10-15 17:28:56,579 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 10403 transitions. Word has length 4 [2022-10-15 17:28:56,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:56,580 INFO L495 AbstractCegarLoop]: Abstraction has 7710 states and 10403 transitions. [2022-10-15 17:28:56,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:28:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 10403 transitions. [2022-10-15 17:28:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:28:56,582 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:56,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:28:56,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:28:56,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2760 more)] === [2022-10-15 17:28:56,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash 211826728, now seen corresponding path program 1 times [2022-10-15 17:28:56,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:56,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159155910] [2022-10-15 17:28:56,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:56,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:28:56,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:56,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159155910] [2022-10-15 17:28:56,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159155910] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:56,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:56,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:56,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035184216] [2022-10-15 17:28:56,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:56,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:56,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:56,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:56,742 INFO L87 Difference]: Start difference. First operand 7710 states and 10403 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 17:29:05,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:29:05,542 INFO L93 Difference]: Finished difference Result 8973 states and 10376 transitions. [2022-10-15 17:29:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:29:05,543 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 17:29:05,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:29:05,584 INFO L225 Difference]: With dead ends: 8973 [2022-10-15 17:29:05,584 INFO L226 Difference]: Without dead ends: 8973 [2022-10-15 17:29:05,585 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 17:29:05,586 INFO L413 NwaCegarLoop]: 5683 mSDtfsCounter, 2867 mSDsluCounter, 3854 mSDsCounter, 0 mSdLazyCounter, 4238 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2867 SdHoareTripleChecker+Valid, 9537 SdHoareTripleChecker+Invalid, 4264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:29:05,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2867 Valid, 9537 Invalid, 4264 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 4238 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-10-15 17:29:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8973 states. [2022-10-15 17:29:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8973 to 7709. [2022-10-15 17:29:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7709 states, 4011 states have (on average 2.132136624283221) internal successors, (8552), 6775 states have internal predecessors, (8552), 912 states have call successors, (912), 30 states have call predecessors, (912), 28 states have return successors, (912), 905 states have call predecessors, (912), 912 states have call successors, (912) [2022-10-15 17:29:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7709 states to 7709 states and 10376 transitions. [2022-10-15 17:29:06,350 INFO L78 Accepts]: Start accepts. Automaton has 7709 states and 10376 transitions. Word has length 4 [2022-10-15 17:29:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:29:06,350 INFO L495 AbstractCegarLoop]: Abstraction has 7709 states and 10376 transitions. [2022-10-15 17:29:06,351 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 17:29:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 7709 states and 10376 transitions. [2022-10-15 17:29:06,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 17:29:06,352 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:29:06,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:29:06,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:29:06,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2760 more)] === [2022-10-15 17:29:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:29:06,362 INFO L85 PathProgramCache]: Analyzing trace with hash 770604714, now seen corresponding path program 1 times [2022-10-15 17:29:06,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:29:06,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871314973] [2022-10-15 17:29:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:29:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:29:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:29:06,506 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 17:29:06,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:29:06,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871314973] [2022-10-15 17:29:06,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871314973] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:29:06,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:29:06,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:29:06,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640119838] [2022-10-15 17:29:06,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:29:06,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:29:06,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:29:06,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:29:06,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:29:06,509 INFO L87 Difference]: Start difference. First operand 7709 states and 10376 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)