/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:27:27,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:27:27,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:27:27,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:27:27,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:27:27,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:27:27,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:27:27,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:27:27,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:27:27,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:27:27,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:27:27,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:27:27,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:27:27,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:27:27,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:27:27,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:27:27,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:27:27,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:27:27,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:27:27,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:27:27,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:27:27,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:27:27,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:27:27,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:27:27,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:27:27,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:27:27,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:27:27,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:27:27,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:27:27,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:27:27,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:27:27,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:27:27,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:27:27,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:27:27,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:27:27,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:27:27,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:27:27,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:27:27,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:27:27,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:27:27,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:27:27,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:27:27,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:27:27,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:27:27,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:27:27,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:27:27,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:27:27,256 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:27:27,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:27:27,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:27:27,258 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:27:27,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:27:27,258 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:27:27,258 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:27:27,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:27:27,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:27:27,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:27:27,259 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:27:27,259 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:27:27,259 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:27:27,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:27:27,263 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:27:27,263 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:27:27,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:27:27,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:27:27,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:27:27,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:27:27,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:27:27,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:27:27,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:27:27,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:27:27,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:27:27,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:27:27,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:27:27,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:27:27,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:27:27,730 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:27:27,731 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:27:27,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c [2022-10-15 17:27:27,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7f588718/f00c50f5584b47369988ddce3134f253/FLAG4eea5190b [2022-10-15 17:27:28,873 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:27:28,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c [2022-10-15 17:27:28,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7f588718/f00c50f5584b47369988ddce3134f253/FLAG4eea5190b [2022-10-15 17:27:28,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7f588718/f00c50f5584b47369988ddce3134f253 [2022-10-15 17:27:28,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:27:28,980 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:27:28,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:27:28,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:27:28,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:27:28,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:27:28" (1/1) ... [2022-10-15 17:27:28,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c46e1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:28, skipping insertion in model container [2022-10-15 17:27:28,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:27:28" (1/1) ... [2022-10-15 17:27:29,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:27:29,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:27:29,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c[1974,1987] [2022-10-15 17:27:30,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:27:30,346 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:27:30,370 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c[1974,1987] [2022-10-15 17:27:30,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:27:30,750 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:27:30,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30 WrapperNode [2022-10-15 17:27:30,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:27:30,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:27:30,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:27:30,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:27:30,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:30,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:31,284 INFO L138 Inliner]: procedures = 61, calls = 3183, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 6054 [2022-10-15 17:27:31,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:27:31,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:27:31,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:27:31,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:27:31,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:31,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:31,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:31,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:31,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:31,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:31,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:31,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:31,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:27:31,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:27:31,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:27:31,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:27:31,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (1/1) ... [2022-10-15 17:27:31,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:27:31,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:27:31,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:27:31,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:27:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:27:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-10-15 17:27:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-10-15 17:27:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-15 17:27:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-15 17:27:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:27:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:27:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:27:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-15 17:27:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-15 17:27:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-15 17:27:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-15 17:27:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-15 17:27:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-15 17:27:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:27:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-15 17:27:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-15 17:27:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-15 17:27:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-15 17:27:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-10-15 17:27:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-10-15 17:27:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:27:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:27:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:27:31,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:27:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-15 17:27:31,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-15 17:27:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:27:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-10-15 17:27:31,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-10-15 17:27:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:27:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-15 17:27:31,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-15 17:27:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-15 17:27:31,947 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-15 17:27:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-10-15 17:27:31,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-10-15 17:27:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-15 17:27:31,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-15 17:27:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 17:27:31,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 17:27:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:27:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:27:31,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:27:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-15 17:27:31,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-15 17:27:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-15 17:27:31,949 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-15 17:27:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:27:31,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:27:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-10-15 17:27:31,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-10-15 17:27:32,620 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:27:32,624 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:27:42,484 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:27:42,538 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:27:42,538 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 17:27:42,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:27:42 BoogieIcfgContainer [2022-10-15 17:27:42,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:27:42,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:27:42,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:27:42,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:27:42,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:27:28" (1/3) ... [2022-10-15 17:27:42,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716f8016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:27:42, skipping insertion in model container [2022-10-15 17:27:42,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:27:30" (2/3) ... [2022-10-15 17:27:42,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716f8016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:27:42, skipping insertion in model container [2022-10-15 17:27:42,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:27:42" (3/3) ... [2022-10-15 17:27:42,570 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_aso.2.M4-1.c [2022-10-15 17:27:42,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:27:42,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4324 error locations. [2022-10-15 17:27:42,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:27:42,883 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;@58c52ab2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:27:42,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4324 error locations. [2022-10-15 17:27:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 9158 states, 3843 states have (on average 2.197241738225345) internal successors, (8444), 8170 states have internal predecessors, (8444), 968 states have call successors, (968), 22 states have call predecessors, (968), 22 states have return successors, (968), 966 states have call predecessors, (968), 968 states have call successors, (968) [2022-10-15 17:27:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:27:42,922 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:42,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:27:42,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4322 more)] === [2022-10-15 17:27:42,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash 10190233, now seen corresponding path program 1 times [2022-10-15 17:27:42,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:42,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423753507] [2022-10-15 17:27:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:42,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:43,417 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 17:27:43,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:43,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423753507] [2022-10-15 17:27:43,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423753507] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:43,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:43,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941964327] [2022-10-15 17:27:43,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:43,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:43,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:43,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:43,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:43,509 INFO L87 Difference]: Start difference. First operand has 9158 states, 3843 states have (on average 2.197241738225345) internal successors, (8444), 8170 states have internal predecessors, (8444), 968 states have call successors, (968), 22 states have call predecessors, (968), 22 states have return successors, (968), 966 states have call predecessors, (968), 968 states have call successors, (968) 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 17:27:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:27:53,803 INFO L93 Difference]: Finished difference Result 13553 states and 15224 transitions. [2022-10-15 17:27:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:27:53,807 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 17:27:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:27:53,941 INFO L225 Difference]: With dead ends: 13553 [2022-10-15 17:27:53,941 INFO L226 Difference]: Without dead ends: 13551 [2022-10-15 17:27:53,944 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 17:27:53,955 INFO L413 NwaCegarLoop]: 8543 mSDtfsCounter, 4857 mSDsluCounter, 5881 mSDsCounter, 0 mSdLazyCounter, 6651 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4857 SdHoareTripleChecker+Valid, 14424 SdHoareTripleChecker+Invalid, 6680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 6651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:27:53,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4857 Valid, 14424 Invalid, 6680 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [29 Valid, 6651 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-10-15 17:27:54,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13551 states. [2022-10-15 17:27:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13551 to 11389. [2022-10-15 17:27:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11389 states, 5724 states have (on average 2.189902166317261) internal successors, (12535), 10052 states have internal predecessors, (12535), 1306 states have call successors, (1306), 38 states have call predecessors, (1306), 36 states have return successors, (1306), 1299 states have call predecessors, (1306), 1306 states have call successors, (1306) [2022-10-15 17:27:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11389 states to 11389 states and 15147 transitions. [2022-10-15 17:27:56,215 INFO L78 Accepts]: Start accepts. Automaton has 11389 states and 15147 transitions. Word has length 3 [2022-10-15 17:27:56,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:27:56,215 INFO L495 AbstractCegarLoop]: Abstraction has 11389 states and 15147 transitions. [2022-10-15 17:27:56,216 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 17:27:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11389 states and 15147 transitions. [2022-10-15 17:27:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:27:56,217 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:27:56,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:27:56,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:27:56,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4322 more)] === [2022-10-15 17:27:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:27:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash 10190234, now seen corresponding path program 1 times [2022-10-15 17:27:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:27:56,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110407007] [2022-10-15 17:27:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:27:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:27:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:27:56,423 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 17:27:56,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:27:56,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110407007] [2022-10-15 17:27:56,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110407007] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:27:56,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:27:56,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:27:56,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157964298] [2022-10-15 17:27:56,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:27:56,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:27:56,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:27:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:27:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:27:56,438 INFO L87 Difference]: Start difference. First operand 11389 states and 15147 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 17:28:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:08,339 INFO L93 Difference]: Finished difference Result 13244 states and 15123 transitions. [2022-10-15 17:28:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:08,341 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 17:28:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:08,439 INFO L225 Difference]: With dead ends: 13244 [2022-10-15 17:28:08,439 INFO L226 Difference]: Without dead ends: 13244 [2022-10-15 17:28:08,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:08,442 INFO L413 NwaCegarLoop]: 8738 mSDtfsCounter, 3976 mSDsluCounter, 5883 mSDsCounter, 0 mSdLazyCounter, 6362 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3976 SdHoareTripleChecker+Valid, 14621 SdHoareTripleChecker+Invalid, 6388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 6362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:08,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3976 Valid, 14621 Invalid, 6388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 6362 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-10-15 17:28:08,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13244 states. [2022-10-15 17:28:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13244 to 11392. [2022-10-15 17:28:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11392 states, 5727 states have (on average 2.1845643443338574) internal successors, (12511), 10054 states have internal predecessors, (12511), 1306 states have call successors, (1306), 39 states have call predecessors, (1306), 37 states have return successors, (1306), 1299 states have call predecessors, (1306), 1306 states have call successors, (1306) [2022-10-15 17:28:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11392 states to 11392 states and 15123 transitions. [2022-10-15 17:28:09,832 INFO L78 Accepts]: Start accepts. Automaton has 11392 states and 15123 transitions. Word has length 3 [2022-10-15 17:28:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:09,833 INFO L495 AbstractCegarLoop]: Abstraction has 11392 states and 15123 transitions. [2022-10-15 17:28:09,834 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 17:28:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 11392 states and 15123 transitions. [2022-10-15 17:28:09,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:28:09,834 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:09,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:28:09,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:28:09,835 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4322 more)] === [2022-10-15 17:28:09,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:09,838 INFO L85 PathProgramCache]: Analyzing trace with hash 315907432, now seen corresponding path program 1 times [2022-10-15 17:28:09,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:09,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691600006] [2022-10-15 17:28:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:09,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:09,997 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 17:28:09,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:09,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691600006] [2022-10-15 17:28:10,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691600006] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:10,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:10,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:10,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102077797] [2022-10-15 17:28:10,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:10,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:10,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:10,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:10,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:10,009 INFO L87 Difference]: Start difference. First operand 11392 states and 15123 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)