/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:20:25,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:20:25,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:20:25,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 01:20:25,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 01:20:25,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 01:20:25,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 01:20:25,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 01:20:25,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 01:20:25,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 01:20:25,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 01:20:25,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 01:20:25,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:20:25,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:20:25,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:20:25,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:20:25,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:20:25,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:20:25,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:20:25,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:20:25,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:20:25,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:20:25,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:20:25,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:20:25,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 01:20:25,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 01:20:25,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 01:20:25,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 01:20:25,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 01:20:25,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 01:20:25,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:20:25,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:20:25,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:20:25,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:20:25,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:20:25,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:20:25,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:20:25,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:20:25,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:20:25,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:20:25,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:20:25,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 01:20:25,811 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:20:25,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:20:25,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:20:25,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:20:25,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:20:25,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:20:25,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:20:25,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:20:25,814 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:20:25,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:20:25,814 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:20:25,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:20:25,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:20:25,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:20:25,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:20:25,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:20:25,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:20:25,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:20:25,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:20:25,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:20:25,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:20:25,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:20:25,816 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:20:25,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:20:25,817 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:20:25,817 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:20:25,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:20:25,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:20:25,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:20:25,998 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:20:25,998 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:20:25,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2023-04-02 01:20:27,091 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:20:27,267 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:20:27,268 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2023-04-02 01:20:27,274 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f0097c88/d6cc91622e614ef59720ff7cf04d8029/FLAGad960fbc7 [2023-04-02 01:20:27,290 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f0097c88/d6cc91622e614ef59720ff7cf04d8029 [2023-04-02 01:20:27,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:20:27,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:20:27,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:20:27,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:20:27,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:20:27,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9bf8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27, skipping insertion in model container [2023-04-02 01:20:27,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:20:27,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:20:27,419 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2023-04-02 01:20:27,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:20:27,468 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:20:27,484 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2023-04-02 01:20:27,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:20:27,505 WARN L667 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-04-02 01:20:27,510 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:20:27,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27 WrapperNode [2023-04-02 01:20:27,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:20:27,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:20:27,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:20:27,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:20:27,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,536 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:20:27,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:20:27,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:20:27,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:20:27,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27" (1/1) ... [2023-04-02 01:20:27,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:20:27,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:20:27,565 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) [2023-04-02 01:20:27,571 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 [2023-04-02 01:20:27,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:20:27,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:20:27,591 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:20:27,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 01:20:27,591 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2023-04-02 01:20:27,591 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2023-04-02 01:20:27,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:20:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:20:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:20:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 01:20:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 01:20:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:20:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:20:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2023-04-02 01:20:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2023-04-02 01:20:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:20:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:20:27,667 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:20:27,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:20:27,839 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:20:27,843 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:20:27,844 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-02 01:20:27,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:20:27 BoogieIcfgContainer [2023-04-02 01:20:27,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:20:27,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:20:27,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:20:27,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:20:27,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:20:27" (1/3) ... [2023-04-02 01:20:27,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7741cf9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:20:27, skipping insertion in model container [2023-04-02 01:20:27,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:20:27" (2/3) ... [2023-04-02 01:20:27,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7741cf9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:20:27, skipping insertion in model container [2023-04-02 01:20:27,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:20:27" (3/3) ... [2023-04-02 01:20:27,852 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2023-04-02 01:20:27,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:20:27,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:20:27,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:20:27,900 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@4e8a5fa6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:20:27,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:20:27,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 01:20:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-02 01:20:27,913 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:20:27,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:20:27,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:20:27,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:20:27,924 INFO L85 PathProgramCache]: Analyzing trace with hash -541205821, now seen corresponding path program 1 times [2023-04-02 01:20:27,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:20:27,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73594628] [2023-04-02 01:20:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:20:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:20:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:28,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:20:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:28,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 01:20:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:20:28,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:20:28,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73594628] [2023-04-02 01:20:28,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73594628] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:20:28,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:20:28,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 01:20:28,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048333850] [2023-04-02 01:20:28,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:20:28,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 01:20:28,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:20:28,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 01:20:28,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 01:20:28,138 INFO L87 Difference]: Start difference. First operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:20:28,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:20:28,331 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2023-04-02 01:20:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 01:20:28,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-04-02 01:20:28,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:20:28,337 INFO L225 Difference]: With dead ends: 102 [2023-04-02 01:20:28,337 INFO L226 Difference]: Without dead ends: 47 [2023-04-02 01:20:28,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 01:20:28,342 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 58 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:20:28,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 10 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:20:28,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-02 01:20:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-04-02 01:20:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:20:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2023-04-02 01:20:28,384 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 32 [2023-04-02 01:20:28,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:20:28,384 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2023-04-02 01:20:28,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:20:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2023-04-02 01:20:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-04-02 01:20:28,385 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:20:28,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:20:28,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:20:28,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:20:28,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:20:28,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1555699344, now seen corresponding path program 1 times [2023-04-02 01:20:28,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:20:28,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692436742] [2023-04-02 01:20:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:20:28,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:20:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:20:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:28,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 01:20:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:20:28,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:20:28,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692436742] [2023-04-02 01:20:28,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692436742] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:20:28,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:20:28,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 01:20:28,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743834301] [2023-04-02 01:20:28,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:20:28,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 01:20:28,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:20:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 01:20:28,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 01:20:28,485 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:20:28,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:20:28,652 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2023-04-02 01:20:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 01:20:28,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2023-04-02 01:20:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:20:28,656 INFO L225 Difference]: With dead ends: 88 [2023-04-02 01:20:28,657 INFO L226 Difference]: Without dead ends: 49 [2023-04-02 01:20:28,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:20:28,664 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:20:28,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 12 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:20:28,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-04-02 01:20:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2023-04-02 01:20:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:20:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2023-04-02 01:20:28,696 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 36 [2023-04-02 01:20:28,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:20:28,697 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2023-04-02 01:20:28,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:20:28,697 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2023-04-02 01:20:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-02 01:20:28,698 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:20:28,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:20:28,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:20:28,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:20:28,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:20:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1615735470, now seen corresponding path program 1 times [2023-04-02 01:20:28,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:20:28,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117471987] [2023-04-02 01:20:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:20:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:20:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:20:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:28,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 01:20:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:20:28,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:20:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117471987] [2023-04-02 01:20:28,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117471987] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:20:28,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656294832] [2023-04-02 01:20:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:20:28,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:20:28,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:20:28,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:20:28,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 01:20:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:28,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 01:20:28,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:20:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:20:28,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 01:20:28,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656294832] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:20:28,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:20:28,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-02 01:20:28,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734262538] [2023-04-02 01:20:28,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:20:28,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 01:20:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:20:28,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 01:20:28,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:20:28,960 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:20:28,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:20:28,980 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2023-04-02 01:20:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 01:20:28,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-04-02 01:20:28,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:20:28,981 INFO L225 Difference]: With dead ends: 84 [2023-04-02 01:20:28,981 INFO L226 Difference]: Without dead ends: 49 [2023-04-02 01:20:28,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:20:28,982 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:20:28,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:20:28,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-04-02 01:20:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-04-02 01:20:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:20:28,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2023-04-02 01:20:28,988 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 38 [2023-04-02 01:20:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:20:28,988 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2023-04-02 01:20:28,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:20:28,989 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2023-04-02 01:20:28,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-02 01:20:28,989 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:20:28,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:20:28,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 01:20:29,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:20:29,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:20:29,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:20:29,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1357570032, now seen corresponding path program 1 times [2023-04-02 01:20:29,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:20:29,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125047540] [2023-04-02 01:20:29,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:20:29,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:20:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:20:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:29,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 01:20:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:20:29,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:20:29,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125047540] [2023-04-02 01:20:29,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125047540] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:20:29,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128665222] [2023-04-02 01:20:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:20:29,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:20:29,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:20:29,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:20:29,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 01:20:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:29,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 01:20:29,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:20:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:20:29,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:20:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:20:29,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128665222] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:20:29,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:20:29,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-04-02 01:20:29,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032796293] [2023-04-02 01:20:29,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:20:29,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 01:20:29,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:20:29,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 01:20:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-02 01:20:29,513 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:20:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:20:29,671 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2023-04-02 01:20:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 01:20:29,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-04-02 01:20:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:20:29,672 INFO L225 Difference]: With dead ends: 95 [2023-04-02 01:20:29,672 INFO L226 Difference]: Without dead ends: 55 [2023-04-02 01:20:29,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:20:29,675 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:20:29,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 22 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:20:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-04-02 01:20:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-04-02 01:20:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 states have internal predecessors, (57), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:20:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2023-04-02 01:20:29,693 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 38 [2023-04-02 01:20:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:20:29,693 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2023-04-02 01:20:29,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:20:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2023-04-02 01:20:29,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-02 01:20:29,696 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:20:29,696 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:20:29,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 01:20:29,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-02 01:20:29,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:20:29,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:20:29,901 INFO L85 PathProgramCache]: Analyzing trace with hash -688602954, now seen corresponding path program 2 times [2023-04-02 01:20:29,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:20:29,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678704436] [2023-04-02 01:20:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:20:29,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:20:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:20:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 01:20:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:20:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 01:20:30,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:20:30,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678704436] [2023-04-02 01:20:30,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678704436] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:20:30,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:20:30,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 01:20:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85093290] [2023-04-02 01:20:30,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:20:30,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 01:20:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:20:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 01:20:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:20:30,054 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:20:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:20:30,183 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2023-04-02 01:20:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 01:20:30,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2023-04-02 01:20:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:20:30,185 INFO L225 Difference]: With dead ends: 66 [2023-04-02 01:20:30,186 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 01:20:30,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-02 01:20:30,188 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 80 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:20:30,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 22 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:20:30,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 01:20:30,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 01:20:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-04-02 01:20:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 01:20:30,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2023-04-02 01:20:30,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:20:30,190 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 01:20:30,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:20:30,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 01:20:30,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 01:20:30,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 01:20:30,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 01:20:30,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 01:20:30,219 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-02 01:20:30,219 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2023-04-02 01:20:30,219 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-02 01:20:30,219 INFO L899 garLoopResultBuilder]: For program point r_strncpyFINAL(line 42) no Hoare annotation was computed. [2023-04-02 01:20:30,220 INFO L899 garLoopResultBuilder]: For program point r_strncpyEXIT(line 42) no Hoare annotation was computed. [2023-04-02 01:20:30,220 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 42) the Hoare annotation is: true [2023-04-02 01:20:30,220 INFO L902 garLoopResultBuilder]: At program point L94(line 94) the Hoare annotation is: true [2023-04-02 01:20:30,220 INFO L899 garLoopResultBuilder]: For program point L94-1(line 94) no Hoare annotation was computed. [2023-04-02 01:20:30,220 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 87 96) no Hoare annotation was computed. [2023-04-02 01:20:30,220 INFO L899 garLoopResultBuilder]: For program point L90-2(lines 90 92) no Hoare annotation was computed. [2023-04-02 01:20:30,220 INFO L902 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point L90-4(lines 90 92) no Hoare annotation was computed. [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 87 96) no Hoare annotation was computed. [2023-04-02 01:20:30,221 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 87 96) the Hoare annotation is: true [2023-04-02 01:20:30,221 INFO L895 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point L77-1(line 77) no Hoare annotation was computed. [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 75) no Hoare annotation was computed. [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 83) no Hoare annotation was computed. [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2023-04-02 01:20:30,221 INFO L899 garLoopResultBuilder]: For program point parse_expression_listFINAL(lines 58 86) no Hoare annotation was computed. [2023-04-02 01:20:30,222 INFO L899 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2023-04-02 01:20:30,222 INFO L902 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: true [2023-04-02 01:20:30,222 INFO L899 garLoopResultBuilder]: For program point L70-9(line 70) no Hoare annotation was computed. [2023-04-02 01:20:30,222 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 58 86) the Hoare annotation is: true [2023-04-02 01:20:30,222 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2023-04-02 01:20:30,222 INFO L899 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2023-04-02 01:20:30,222 INFO L899 garLoopResultBuilder]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2023-04-02 01:20:30,222 INFO L899 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2023-04-02 01:20:30,222 INFO L899 garLoopResultBuilder]: For program point L67-3(line 67) no Hoare annotation was computed. [2023-04-02 01:20:30,222 INFO L902 garLoopResultBuilder]: At program point L67-5(line 67) the Hoare annotation is: true [2023-04-02 01:20:30,222 INFO L899 garLoopResultBuilder]: For program point L63-1(lines 63 84) no Hoare annotation was computed. [2023-04-02 01:20:30,223 INFO L899 garLoopResultBuilder]: For program point L67-6(line 67) no Hoare annotation was computed. [2023-04-02 01:20:30,223 INFO L899 garLoopResultBuilder]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2023-04-02 01:20:30,223 INFO L899 garLoopResultBuilder]: For program point parse_expression_listEXIT(lines 58 86) no Hoare annotation was computed. [2023-04-02 01:20:30,223 INFO L902 garLoopResultBuilder]: At program point L63-4(lines 63 84) the Hoare annotation is: true [2023-04-02 01:20:30,223 INFO L899 garLoopResultBuilder]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2023-04-02 01:20:30,223 INFO L895 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2023-04-02 01:20:30,224 INFO L899 garLoopResultBuilder]: For program point L76-1(line 76) no Hoare annotation was computed. [2023-04-02 01:20:30,225 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 81) no Hoare annotation was computed. [2023-04-02 01:20:30,225 INFO L899 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2023-04-02 01:20:30,226 INFO L899 garLoopResultBuilder]: For program point L68-2(line 68) no Hoare annotation was computed. [2023-04-02 01:20:30,227 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:20:30,227 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 01:20:30,227 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:20:30,227 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:20:30,227 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 01:20:30,227 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:20:30,227 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 01:20:30,227 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-04-02 01:20:30,228 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-04-02 01:20:30,228 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 19) no Hoare annotation was computed. [2023-04-02 01:20:30,228 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 19) no Hoare annotation was computed. [2023-04-02 01:20:30,228 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 19) the Hoare annotation is: true [2023-04-02 01:20:30,228 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-04-02 01:20:30,230 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-04-02 01:20:30,232 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 01:20:30,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 01:20:30 BoogieIcfgContainer [2023-04-02 01:20:30,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 01:20:30,239 INFO L158 Benchmark]: Toolchain (without parser) took 2946.59ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 211.1MB in the beginning and 178.8MB in the end (delta: 32.3MB). Peak memory consumption was 86.3MB. Max. memory is 8.0GB. [2023-04-02 01:20:30,239 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 166.7MB. Free memory is still 113.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 01:20:30,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.77ms. Allocated memory is still 265.3MB. Free memory was 211.1MB in the beginning and 199.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 01:20:30,240 INFO L158 Benchmark]: Boogie Preprocessor took 27.72ms. Allocated memory is still 265.3MB. Free memory was 199.6MB in the beginning and 197.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 01:20:30,240 INFO L158 Benchmark]: RCFGBuilder took 306.02ms. Allocated memory is still 265.3MB. Free memory was 197.5MB in the beginning and 180.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-04-02 01:20:30,240 INFO L158 Benchmark]: TraceAbstraction took 2390.50ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 179.6MB in the beginning and 178.8MB in the end (delta: 863.3kB). Peak memory consumption was 54.9MB. Max. memory is 8.0GB. [2023-04-02 01:20:30,241 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 166.7MB. Free memory is still 113.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.77ms. Allocated memory is still 265.3MB. Free memory was 211.1MB in the beginning and 199.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.72ms. Allocated memory is still 265.3MB. Free memory was 199.6MB in the beginning and 197.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 306.02ms. Allocated memory is still 265.3MB. Free memory was 197.5MB in the beginning and 180.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 2390.50ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 179.6MB in the beginning and 178.8MB in the end (delta: 863.3kB). Peak memory consumption was 54.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 257 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 250 mSDsluCounter, 174 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 568 IncrementalHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 78 mSDtfsCounter, 568 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 40 PreInvPairs, 52 NumberOfFragments, 28 HoareAnnotationTreeSize, 40 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 17/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-04-02 01:20:30,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...