/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.M4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:28:21,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:28:21,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:28:21,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:28:21,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:28:21,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:28:21,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:28:21,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:28:21,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:28:21,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:28:21,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:28:21,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:28:21,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:28:21,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:28:21,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:28:21,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:28:21,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:28:21,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:28:21,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:28:21,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:28:21,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:28:21,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:28:21,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:28:21,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:28:21,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:28:21,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:28:21,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:28:22,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:28:22,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:28:22,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:28:22,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:28:22,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:28:22,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:28:22,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:28:22,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:28:22,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:28:22,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:28:22,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:28:22,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:28:22,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:28:22,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:28:22,017 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 17:28:22,081 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:28:22,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:28:22,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:28:22,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:28:22,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:28:22,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:28:22,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:28:22,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:28:22,089 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:28:22,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:28:22,090 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:28:22,091 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:28:22,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:28:22,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:28:22,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:28:22,092 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:28:22,094 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:28:22,094 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:28:22,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:28:22,094 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:28:22,095 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:28:22,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:28:22,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:28:22,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:28:22,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:28:22,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:28:22,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:28:22,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:28:22,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:28:22,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:28:22,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:28:22,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:28:22,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:28:22,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:28:22,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:28:22,571 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:28:22,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c [2022-10-15 17:28:22,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f748de26/31acb8768ab34feaae0e84f8532450bd/FLAG9cf7b8229 [2022-10-15 17:28:23,625 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:28:23,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c [2022-10-15 17:28:23,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f748de26/31acb8768ab34feaae0e84f8532450bd/FLAG9cf7b8229 [2022-10-15 17:28:23,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f748de26/31acb8768ab34feaae0e84f8532450bd [2022-10-15 17:28:23,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:28:23,768 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:28:23,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:28:23,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:28:23,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:28:23,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:28:23" (1/1) ... [2022-10-15 17:28:23,782 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 05:28:23, skipping insertion in model container [2022-10-15 17:28:23,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:28:23" (1/1) ... [2022-10-15 17:28:23,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:28:23,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:28:24,200 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.M4-2.c[1509,1522] [2022-10-15 17:28:24,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:28:24,804 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:28:24,836 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.M4-2.c[1509,1522] [2022-10-15 17:28:25,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:28:25,133 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:28:25,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25 WrapperNode [2022-10-15 17:28:25,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:28:25,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:28:25,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:28:25,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:28:25,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,423 INFO L138 Inliner]: procedures = 55, calls = 2046, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 3968 [2022-10-15 17:28:25,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:28:25,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:28:25,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:28:25,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:28:25,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,734 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:28:25,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:28:25,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:28:25,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:28:25,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (1/1) ... [2022-10-15 17:28:25,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:28:25,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:28:25,887 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 17:28:25,910 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 17:28:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:28:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-15 17:28:25,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-15 17:28:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:28:25,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-15 17:28:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:28:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-15 17:28:25,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-15 17:28:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-15 17:28:25,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-15 17:28:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-15 17:28:25,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-15 17:28:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:28:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-15 17:28:25,968 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-15 17:28:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-15 17:28:25,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-15 17:28:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:28:25,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-15 17:28:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:28:25,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-15 17:28:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:28:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-10-15 17:28:25,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-10-15 17:28:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-15 17:28:25,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-15 17:28:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:28:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-15 17:28:25,970 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-15 17:28:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 17:28:25,971 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 17:28:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:28:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:28:25,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:28:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-15 17:28:25,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-15 17:28:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-15 17:28:25,972 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-15 17:28:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:28:25,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-15 17:28:26,615 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:28:26,618 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:28:33,186 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:28:33,217 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:28:33,217 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 17:28:33,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:28:33 BoogieIcfgContainer [2022-10-15 17:28:33,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:28:33,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:28:33,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:28:33,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:28:33,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:28:23" (1/3) ... [2022-10-15 17:28:33,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c84aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:28:33, skipping insertion in model container [2022-10-15 17:28:33,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:28:25" (2/3) ... [2022-10-15 17:28:33,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c84aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:28:33, skipping insertion in model container [2022-10-15 17:28:33,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:28:33" (3/3) ... [2022-10-15 17:28:33,238 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-2.c [2022-10-15 17:28:33,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:28:33,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2762 error locations. [2022-10-15 17:28:33,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:28:33,405 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;@6eff168c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:28:33,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2762 error locations. [2022-10-15 17:28:33,428 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 17:28:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:28:33,438 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:33,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:28:33,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2760 more)] === [2022-10-15 17:28:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash 6832900, now seen corresponding path program 1 times [2022-10-15 17:28:33,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:33,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057528685] [2022-10-15 17:28:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:33,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:33,850 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 17:28:33,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:33,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057528685] [2022-10-15 17:28:33,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057528685] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:33,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:33,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:33,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953989657] [2022-10-15 17:28:33,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:33,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:33,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:33,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:33,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:34,014 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 17:28:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:41,116 INFO L93 Difference]: Finished difference Result 9342 states and 10533 transitions. [2022-10-15 17:28:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:41,120 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 17:28:41,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:41,206 INFO L225 Difference]: With dead ends: 9342 [2022-10-15 17:28:41,206 INFO L226 Difference]: Without dead ends: 9340 [2022-10-15 17:28:41,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:41,215 INFO L413 NwaCegarLoop]: 5446 mSDtfsCounter, 3752 mSDsluCounter, 3853 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 9299 SdHoareTripleChecker+Invalid, 4588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:41,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3752 Valid, 9299 Invalid, 4588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-10-15 17:28:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2022-10-15 17:28:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 7708. [2022-10-15 17:28:42,430 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 17:28:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 10456 transitions. [2022-10-15 17:28:42,525 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 10456 transitions. Word has length 3 [2022-10-15 17:28:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:42,526 INFO L495 AbstractCegarLoop]: Abstraction has 7708 states and 10456 transitions. [2022-10-15 17:28:42,526 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 17:28:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 10456 transitions. [2022-10-15 17:28:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 17:28:42,527 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:42,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 17:28:42,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:28:42,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2760 more)] === [2022-10-15 17:28:42,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:42,530 INFO L85 PathProgramCache]: Analyzing trace with hash 6832901, now seen corresponding path program 1 times [2022-10-15 17:28:42,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:42,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879208861] [2022-10-15 17:28:42,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:42,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:42,756 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 17:28:42,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:42,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879208861] [2022-10-15 17:28:42,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879208861] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:42,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:42,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:42,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780268437] [2022-10-15 17:28:42,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:42,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:42,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:42,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:42,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:42,762 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 17:28:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:50,362 INFO L93 Difference]: Finished difference Result 9027 states and 10432 transitions. [2022-10-15 17:28:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:50,363 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 17:28:50,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:50,429 INFO L225 Difference]: With dead ends: 9027 [2022-10-15 17:28:50,430 INFO L226 Difference]: Without dead ends: 9027 [2022-10-15 17:28:50,431 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 17:28:50,433 INFO L413 NwaCegarLoop]: 5658 mSDtfsCounter, 2922 mSDsluCounter, 3855 mSDsCounter, 0 mSdLazyCounter, 4264 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s 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, 7.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:50,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2922 Valid, 9513 Invalid, 4290 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 4264 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-10-15 17:28:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9027 states. [2022-10-15 17:28:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9027 to 7711. [2022-10-15 17:28:51,333 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 17:28:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 10432 transitions. [2022-10-15 17:28:51,411 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 10432 transitions. Word has length 3 [2022-10-15 17:28:51,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:51,412 INFO L495 AbstractCegarLoop]: Abstraction has 7711 states and 10432 transitions. [2022-10-15 17:28:51,413 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 17:28:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 10432 transitions. [2022-10-15 17:28:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:28:51,414 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:51,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:28:51,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:28:51,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2760 more)] === [2022-10-15 17:28:51,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash 211826727, now seen corresponding path program 1 times [2022-10-15 17:28:51,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:51,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144464998] [2022-10-15 17:28:51,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:51,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:51,608 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 17:28:51,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:51,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144464998] [2022-10-15 17:28:51,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144464998] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:51,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:51,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:51,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837863289] [2022-10-15 17:28:51,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:51,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:51,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:51,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:51,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:51,618 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 17:28:58,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:28:58,291 INFO L93 Difference]: Finished difference Result 9288 states and 10478 transitions. [2022-10-15 17:28:58,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:28:58,292 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 17:28:58,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:28:58,346 INFO L225 Difference]: With dead ends: 9288 [2022-10-15 17:28:58,346 INFO L226 Difference]: Without dead ends: 9288 [2022-10-15 17:28:58,347 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 17:28:58,348 INFO L413 NwaCegarLoop]: 5470 mSDtfsCounter, 3695 mSDsluCounter, 3851 mSDsCounter, 0 mSdLazyCounter, 4531 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 6.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:28:58,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3695 Valid, 9321 Invalid, 4561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 4531 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-10-15 17:28:58,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9288 states. [2022-10-15 17:28:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9288 to 7710. [2022-10-15 17:28:59,081 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 17:28:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 10403 transitions. [2022-10-15 17:28:59,129 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 10403 transitions. Word has length 4 [2022-10-15 17:28:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:28:59,129 INFO L495 AbstractCegarLoop]: Abstraction has 7710 states and 10403 transitions. [2022-10-15 17:28:59,130 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 17:28:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 10403 transitions. [2022-10-15 17:28:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:28:59,130 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:28:59,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:28:59,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:28:59,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2760 more)] === [2022-10-15 17:28:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:28:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash 211826728, now seen corresponding path program 1 times [2022-10-15 17:28:59,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:28:59,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739671864] [2022-10-15 17:28:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:28:59,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:28:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:28:59,272 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 17:28:59,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:28:59,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739671864] [2022-10-15 17:28:59,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739671864] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:28:59,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:28:59,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 17:28:59,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447014001] [2022-10-15 17:28:59,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:28:59,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:28:59,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:28:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:28:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:28:59,276 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 17:29:08,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:29:08,011 INFO L93 Difference]: Finished difference Result 8973 states and 10376 transitions. [2022-10-15 17:29:08,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:29:08,012 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 17:29:08,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:29:08,045 INFO L225 Difference]: With dead ends: 8973 [2022-10-15 17:29:08,046 INFO L226 Difference]: Without dead ends: 8973 [2022-10-15 17:29:08,046 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 17:29:08,048 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, 8.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:29:08,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2867 Valid, 9537 Invalid, 4264 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 4238 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-10-15 17:29:08,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8973 states. [2022-10-15 17:29:08,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8973 to 7709. [2022-10-15 17:29:08,696 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 17:29:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7709 states to 7709 states and 10376 transitions. [2022-10-15 17:29:08,740 INFO L78 Accepts]: Start accepts. Automaton has 7709 states and 10376 transitions. Word has length 4 [2022-10-15 17:29:08,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:29:08,740 INFO L495 AbstractCegarLoop]: Abstraction has 7709 states and 10376 transitions. [2022-10-15 17:29:08,740 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 17:29:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 7709 states and 10376 transitions. [2022-10-15 17:29:08,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 17:29:08,741 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:29:08,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:29:08,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:29:08,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__startrek_hyperperiodErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __startrek_hyperperiodErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2760 more)] === [2022-10-15 17:29:08,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:29:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash 770604714, now seen corresponding path program 1 times [2022-10-15 17:29:08,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:29:08,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782581768] [2022-10-15 17:29:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:29:08,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:29:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:29:08,837 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 17:29:08,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:29:08,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782581768] [2022-10-15 17:29:08,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782581768] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:29:08,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:29:08,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:29:08,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282370283] [2022-10-15 17:29:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:29:08,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:29:08,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:29:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:29:08,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:29:08,841 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)