/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/recursive-simple/afterrec_2calls-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:37:17,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:37:17,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:37:18,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:37:18,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:37:18,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:37:18,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:37:18,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:37:18,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:37:18,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:37:18,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:37:18,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:37:18,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:37:18,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:37:18,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:37:18,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:37:18,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:37:18,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:37:18,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:37:18,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:37:18,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:37:18,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:37:18,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:37:18,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:37:18,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 06:37:18,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:37:18,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:37:18,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:37:18,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:37:18,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:37:18,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:37:18,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:37:18,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:37:18,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:37:18,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:37:18,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:37:18,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:37:18,088 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:37:18,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:37:18,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:37:18,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:37:18,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:37:18,090 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:37:18,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:37:18,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:37:18,090 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:37:18,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:37:18,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:37:18,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:37:18,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:37:18,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:37:18,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:37:18,091 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:37:18,091 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:37:18,092 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:37:18,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:37:18,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:37:18,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:37:18,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:37:18,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:37:18,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:37:18,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:37:18,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:37:18,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:37:18,093 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:37:18,093 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:37:18,093 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:37:18,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:37:18,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:37:18,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:37:18,094 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:37:18,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:37:18,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:37:18,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:37:18,341 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:37:18,341 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:37:18,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec_2calls-1.c [2022-01-10 06:37:18,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aaac2053/b2692e80f6a84e4baa7fcd9d80b2e87a/FLAGe90b0356c [2022-01-10 06:37:18,800 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:37:18,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec_2calls-1.c [2022-01-10 06:37:18,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aaac2053/b2692e80f6a84e4baa7fcd9d80b2e87a/FLAGe90b0356c [2022-01-10 06:37:18,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aaac2053/b2692e80f6a84e4baa7fcd9d80b2e87a [2022-01-10 06:37:18,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:37:18,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:37:18,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:37:18,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:37:18,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:37:18,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:37:18" (1/1) ... [2022-01-10 06:37:18,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39580467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:18, skipping insertion in model container [2022-01-10 06:37:18,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:37:18" (1/1) ... [2022-01-10 06:37:18,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:37:18,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:37:19,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec_2calls-1.c[354,367] [2022-01-10 06:37:19,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec_2calls-1.c[442,455] [2022-01-10 06:37:19,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:37:19,045 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:37:19,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec_2calls-1.c[354,367] [2022-01-10 06:37:19,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec_2calls-1.c[442,455] [2022-01-10 06:37:19,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:37:19,116 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:37:19,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19 WrapperNode [2022-01-10 06:37:19,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:37:19,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:37:19,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:37:19,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:37:19,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (1/1) ... [2022-01-10 06:37:19,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (1/1) ... [2022-01-10 06:37:19,146 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2022-01-10 06:37:19,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:37:19,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:37:19,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:37:19,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:37:19,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (1/1) ... [2022-01-10 06:37:19,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (1/1) ... [2022-01-10 06:37:19,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (1/1) ... [2022-01-10 06:37:19,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (1/1) ... [2022-01-10 06:37:19,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (1/1) ... [2022-01-10 06:37:19,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (1/1) ... [2022-01-10 06:37:19,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (1/1) ... [2022-01-10 06:37:19,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:37:19,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:37:19,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:37:19,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:37:19,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (1/1) ... [2022-01-10 06:37:19,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:37:19,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:37:19,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:37:19,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:37:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:37:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-10 06:37:19,248 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-01-10 06:37:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:37:19,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:37:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:37:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2022-01-10 06:37:19,248 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2022-01-10 06:37:19,304 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:37:19,306 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:37:19,438 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:37:19,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:37:19,443 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 06:37:19,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:37:19 BoogieIcfgContainer [2022-01-10 06:37:19,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:37:19,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:37:19,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:37:19,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:37:19,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:37:18" (1/3) ... [2022-01-10 06:37:19,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c5687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:37:19, skipping insertion in model container [2022-01-10 06:37:19,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:19" (2/3) ... [2022-01-10 06:37:19,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c5687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:37:19, skipping insertion in model container [2022-01-10 06:37:19,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:37:19" (3/3) ... [2022-01-10 06:37:19,452 INFO L111 eAbstractionObserver]: Analyzing ICFG afterrec_2calls-1.c [2022-01-10 06:37:19,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:37:19,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 06:37:19,513 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:37:19,522 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:37:19,523 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 06:37:19,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:37:19,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 06:37:19,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:37:19,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:37:19,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION, f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:37:19,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:37:19,554 INFO L85 PathProgramCache]: Analyzing trace with hash 444027717, now seen corresponding path program 1 times [2022-01-10 06:37:19,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:37:19,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655632227] [2022-01-10 06:37:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:37:19,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:37:19,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:37:19,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:37:19,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:37:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:37:19,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:37:19,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:37:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:37:19,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:37:19,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:37:19,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655632227] [2022-01-10 06:37:19,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655632227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:37:19,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:37:19,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:37:19,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067458358] [2022-01-10 06:37:19,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:37:19,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:37:19,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:37:19,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:37:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:37:19,873 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:37:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:37:19,989 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-01-10 06:37:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:37:19,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-10 06:37:19,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:37:19,999 INFO L225 Difference]: With dead ends: 31 [2022-01-10 06:37:19,999 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 06:37:20,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-10 06:37:20,014 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:37:20,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 63 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:37:20,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 06:37:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 06:37:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 06:37:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-01-10 06:37:20,045 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2022-01-10 06:37:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:37:20,046 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-01-10 06:37:20,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:37:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-01-10 06:37:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 06:37:20,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:37:20,048 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:37:20,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:37:20,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:37:20,257 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION, f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:37:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:37:20,257 INFO L85 PathProgramCache]: Analyzing trace with hash 535126816, now seen corresponding path program 1 times [2022-01-10 06:37:20,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:37:20,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792974452] [2022-01-10 06:37:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:37:20,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:37:20,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:37:20,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:37:20,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:37:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 06:37:20,286 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 06:37:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 06:37:20,309 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-01-10 06:37:20,309 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 06:37:20,311 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 06:37:20,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 06:37:20,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:37:20,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:37:20,528 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-10 06:37:20,532 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 06:37:20,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:37:20 BoogieIcfgContainer [2022-01-10 06:37:20,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 06:37:20,550 INFO L158 Benchmark]: Toolchain (without parser) took 1720.17ms. Allocated memory was 175.1MB in the beginning and 229.6MB in the end (delta: 54.5MB). Free memory was 118.2MB in the beginning and 158.4MB in the end (delta: -40.2MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. [2022-01-10 06:37:20,551 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 175.1MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 06:37:20,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.02ms. Allocated memory was 175.1MB in the beginning and 229.6MB in the end (delta: 54.5MB). Free memory was 118.1MB in the beginning and 203.0MB in the end (delta: -84.9MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2022-01-10 06:37:20,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.26ms. Allocated memory is still 229.6MB. Free memory was 203.0MB in the beginning and 201.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 06:37:20,552 INFO L158 Benchmark]: Boogie Preprocessor took 23.40ms. Allocated memory is still 229.6MB. Free memory was 201.4MB in the beginning and 200.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 06:37:20,552 INFO L158 Benchmark]: RCFGBuilder took 272.50ms. Allocated memory is still 229.6MB. Free memory was 200.4MB in the beginning and 189.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 06:37:20,553 INFO L158 Benchmark]: TraceAbstraction took 1103.80ms. Allocated memory is still 229.6MB. Free memory was 189.4MB in the beginning and 158.4MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-01-10 06:37:20,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 175.1MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 284.02ms. Allocated memory was 175.1MB in the beginning and 229.6MB in the end (delta: 54.5MB). Free memory was 118.1MB in the beginning and 203.0MB in the end (delta: -84.9MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.26ms. Allocated memory is still 229.6MB. Free memory was 203.0MB in the beginning and 201.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.40ms. Allocated memory is still 229.6MB. Free memory was 201.4MB in the beginning and 200.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 272.50ms. Allocated memory is still 229.6MB. Free memory was 200.4MB in the beginning and 189.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1103.80ms. Allocated memory is still 229.6MB. Free memory was 189.4MB in the beginning and 158.4MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] CALL f(4) VAL [\old(n)=4] [L9] COND FALSE !(n<3) [L10] n-- VAL [\old(n)=4, n=3] [L11] CALL f2(n) VAL [\old(n)=3] [L16] COND FALSE !(n<3) [L17] n-- VAL [\old(n)=3, n=2] [L18] CALL f(n) VAL [\old(n)=2] [L9] COND TRUE n<3 VAL [\old(n)=2, n=2] [L18] RET f(n) VAL [\old(n)=3, n=2] [L19] reach_error() VAL [\old(n)=3, n=2] - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 12 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 7, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 3 NumberOfNonLiveVariables, 29 ConjunctsInSsa, 6 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 RESULT: Ultimate proved your program to be incorrect! [2022-01-10 06:37:20,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...