/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:05:03,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:05:03,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:05:03,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:05:03,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:05:03,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:05:03,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:05:03,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:05:03,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:05:03,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:05:03,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:05:03,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:05:03,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:05:03,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:05:03,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:05:03,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:05:03,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:05:03,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:05:03,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:05:03,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:05:03,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:05:03,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:05:03,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:05:03,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:05:03,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 06:05:03,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:05:03,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:05:03,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:05:03,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:05:03,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:05:03,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:05:03,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:05:03,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:05:03,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:05:03,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:05:03,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:05:03,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:05:03,664 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:05:03,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:05:03,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:05:03,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:05:03,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:05:03,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:05:03,666 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:05:03,666 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:05:03,666 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:05:03,666 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:05:03,667 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:05:03,667 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:05:03,667 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:05:03,667 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:05:03,667 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:05:03,667 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:05:03,667 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:05:03,668 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:05:03,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:05:03,668 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:05:03,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:05:03,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:05:03,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:05:03,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:05:03,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:05:03,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:05:03,669 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:05:03,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:05:03,669 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:05:03,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:05:03,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:05:03,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:05:03,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:05:03,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:05:03,670 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:05:03,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:05:03,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:05:03,670 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:05:03,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:05:03,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:05:03,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:05:03,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:05:03,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:05:03,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:05:03,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:05:03,864 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:05:03,864 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:05:03,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2023-04-01 06:05:04,946 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:05:05,114 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:05:05,114 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2023-04-01 06:05:05,119 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedbb2334/8be3aa5827114cb185ad584c15eb2b09/FLAGdca8cde39 [2023-04-01 06:05:05,133 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedbb2334/8be3aa5827114cb185ad584c15eb2b09 [2023-04-01 06:05:05,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:05:05,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:05:05,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:05:05,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:05:05,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:05:05,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83c254d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05, skipping insertion in model container [2023-04-01 06:05:05,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:05:05,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:05:05,254 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/recursive-simple/afterrec_2calls-2.c[354,367] [2023-04-01 06:05:05,259 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/recursive-simple/afterrec_2calls-2.c[442,455] [2023-04-01 06:05:05,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:05:05,270 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:05:05,277 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/recursive-simple/afterrec_2calls-2.c[354,367] [2023-04-01 06:05:05,278 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/recursive-simple/afterrec_2calls-2.c[442,455] [2023-04-01 06:05:05,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:05:05,289 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:05:05,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05 WrapperNode [2023-04-01 06:05:05,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:05:05,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:05:05,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:05:05,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:05:05,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,312 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:05:05,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:05:05,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:05:05,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:05:05,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05" (1/1) ... [2023-04-01 06:05:05,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:05:05,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:05:05,340 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) [2023-04-01 06:05:05,342 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 [2023-04-01 06:05:05,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:05:05,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:05:05,368 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:05:05,368 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-04-01 06:05:05,368 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-04-01 06:05:05,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:05:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:05:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:05:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:05:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:05:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-04-01 06:05:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-04-01 06:05:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:05:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:05:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:05:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:05:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:05:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:05:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:05:05,414 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:05:05,415 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:05:05,508 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:05:05,540 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:05:05,540 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:05:05,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:05:05 BoogieIcfgContainer [2023-04-01 06:05:05,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:05:05,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:05:05,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:05:05,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:05:05,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:05:05" (1/3) ... [2023-04-01 06:05:05,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7167040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:05:05, skipping insertion in model container [2023-04-01 06:05:05,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:05:05" (2/3) ... [2023-04-01 06:05:05,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7167040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:05:05, skipping insertion in model container [2023-04-01 06:05:05,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:05:05" (3/3) ... [2023-04-01 06:05:05,547 INFO L112 eAbstractionObserver]: Analyzing ICFG afterrec_2calls-2.c [2023-04-01 06:05:05,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:05:05,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-04-01 06:05:05,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:05:05,637 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=FINITE_AUTOMATA, 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;@4dd9fb4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:05:05,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-04-01 06:05:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 06:05:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-01 06:05:05,650 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:05:05,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:05:05,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION, f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:05:05,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:05:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash 604706430, now seen corresponding path program 1 times [2023-04-01 06:05:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:05:05,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23558778] [2023-04-01 06:05:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:05:05,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:05:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:05:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:05:05,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:05:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23558778] [2023-04-01 06:05:05,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23558778] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:05:05,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:05:05,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 06:05:05,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742806247] [2023-04-01 06:05:05,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:05:05,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 06:05:05,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:05:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 06:05:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 06:05:05,901 INFO L87 Difference]: Start difference. First operand has 23 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 06:05:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:05:05,934 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2023-04-01 06:05:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 06:05:05,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2023-04-01 06:05:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:05:05,941 INFO L225 Difference]: With dead ends: 31 [2023-04-01 06:05:05,941 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 06:05:05,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:05:05,946 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:05:05,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:05:05,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 06:05:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 06:05:05,965 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) [2023-04-01 06:05:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 06:05:05,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-04-01 06:05:05,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:05:05,967 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 06:05:05,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 06:05:05,967 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 06:05:05,967 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 06:05:05,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-04-01 06:05:05,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-04-01 06:05:05,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:05:05,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 06:05:05,986 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-01 06:05:05,986 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-01 06:05:05,986 INFO L899 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-04-01 06:05:05,987 INFO L895 garLoopResultBuilder]: At program point L11(line 11) the Hoare annotation is: (not (= |f_#in~n| 2)) [2023-04-01 06:05:05,987 INFO L899 garLoopResultBuilder]: For program point L11-1(lines 8 13) no Hoare annotation was computed. [2023-04-01 06:05:05,987 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 13) the Hoare annotation is: true [2023-04-01 06:05:05,987 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-04-01 06:05:05,987 INFO L899 garLoopResultBuilder]: For program point fEXIT(lines 8 13) no Hoare annotation was computed. [2023-04-01 06:05:05,987 INFO L899 garLoopResultBuilder]: For program point fFINAL(lines 8 13) no Hoare annotation was computed. [2023-04-01 06:05:05,988 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 22 24) no Hoare annotation was computed. [2023-04-01 06:05:05,988 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 22 24) the Hoare annotation is: true [2023-04-01 06:05:05,988 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 22 24) no Hoare annotation was computed. [2023-04-01 06:05:05,988 INFO L899 garLoopResultBuilder]: For program point L18-1(lines 15 20) no Hoare annotation was computed. [2023-04-01 06:05:05,988 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-04-01 06:05:05,988 INFO L899 garLoopResultBuilder]: For program point f2EXIT(lines 15 20) no Hoare annotation was computed. [2023-04-01 06:05:05,988 INFO L899 garLoopResultBuilder]: For program point f2FINAL(lines 15 20) no Hoare annotation was computed. [2023-04-01 06:05:05,989 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 20) the Hoare annotation is: true [2023-04-01 06:05:05,989 INFO L899 garLoopResultBuilder]: For program point f2Err0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-04-01 06:05:05,989 INFO L902 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: true [2023-04-01 06:05:05,989 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 06:05:05,989 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 06:05:05,989 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 06:05:05,990 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 06:05:05,990 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 06:05:05,990 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 06:05:05,993 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-01 06:05:05,995 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 06:05:05,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 06:05:05 BoogieIcfgContainer [2023-04-01 06:05:05,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 06:05:05,999 INFO L158 Benchmark]: Toolchain (without parser) took 863.49ms. Allocated memory is still 208.7MB. Free memory was 160.0MB in the beginning and 112.2MB in the end (delta: 47.8MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2023-04-01 06:05:06,000 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 208.7MB. Free memory is still 157.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 06:05:06,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.81ms. Allocated memory is still 208.7MB. Free memory was 159.7MB in the beginning and 150.1MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-01 06:05:06,000 INFO L158 Benchmark]: Boogie Preprocessor took 24.68ms. Allocated memory is still 208.7MB. Free memory was 150.1MB in the beginning and 148.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 06:05:06,001 INFO L158 Benchmark]: RCFGBuilder took 226.81ms. Allocated memory is still 208.7MB. Free memory was 148.6MB in the beginning and 138.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 06:05:06,001 INFO L158 Benchmark]: TraceAbstraction took 455.35ms. Allocated memory is still 208.7MB. Free memory was 138.0MB in the beginning and 112.2MB in the end (delta: 25.8MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-04-01 06:05:06,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 208.7MB. Free memory is still 157.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 149.81ms. Allocated memory is still 208.7MB. Free memory was 159.7MB in the beginning and 150.1MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.68ms. Allocated memory is still 208.7MB. Free memory was 150.1MB in the beginning and 148.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 226.81ms. Allocated memory is still 208.7MB. Free memory was 148.6MB in the beginning and 138.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 455.35ms. Allocated memory is still 208.7MB. Free memory was 138.0MB in the beginning and 112.2MB in the end (delta: 25.8MB). Peak memory consumption was 26.2MB. 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 6 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 11 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-04-01 06:05:06,037 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...