/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/recursive-simple/afterrec-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:10:27,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:10:27,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:10:27,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:10:27,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:10:27,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:10:27,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:10:27,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:10:27,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:10:27,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:10:27,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:10:27,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:10:27,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:10:27,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:10:27,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:10:27,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:10:27,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:10:27,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:10:27,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:10:27,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:10:27,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:10:27,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:10:27,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:10:27,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:10:27,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:10:27,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:10:27,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:10:27,194 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:10:27,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:10:27,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:10:27,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:10:27,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:10:27,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:10:27,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:10:27,195 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:10:27,198 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:10:27,199 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:10:27,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:10:27,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:10:27,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:10:27,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:10:27,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:10:27,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:10:27,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:10:27,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:10:27,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:10:27,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:10:27,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:10:27,201 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:10:27,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:10:27,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:10:27,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:10:27,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:10:27,203 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:10:27,203 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:10:27,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:10:27,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:10:27,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:10:27,405 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:10:27,405 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:10:27,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec-1.c [2022-01-11 00:10:27,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16da93614/ce4b775a02174ba58c023099ddde3cf8/FLAG9b3785576 [2022-01-11 00:10:27,825 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:10:27,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-1.c [2022-01-11 00:10:27,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16da93614/ce4b775a02174ba58c023099ddde3cf8/FLAG9b3785576 [2022-01-11 00:10:27,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16da93614/ce4b775a02174ba58c023099ddde3cf8 [2022-01-11 00:10:27,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:10:27,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:10:27,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:10:27,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:10:27,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:10:27,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:10:27" (1/1) ... [2022-01-11 00:10:27,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5a1f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27, skipping insertion in model container [2022-01-11 00:10:27,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:10:27" (1/1) ... [2022-01-11 00:10:27,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:10:27,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:10:27,968 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-1.c[318,331] [2022-01-11 00:10:27,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:10:27,991 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:10:28,002 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-1.c[318,331] [2022-01-11 00:10:28,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:10:28,017 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:10:28,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28 WrapperNode [2022-01-11 00:10:28,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:10:28,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:10:28,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:10:28,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:10:28,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,061 INFO L137 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2022-01-11 00:10:28,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:10:28,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:10:28,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:10:28,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:10:28,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:10:28,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:10:28,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:10:28,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:10:28,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:10:28,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:28,097 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) [2022-01-11 00:10:28,103 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 [2022-01-11 00:10:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:10:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-11 00:10:28,123 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-01-11 00:10:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:10:28,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:10:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:10:28,166 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:10:28,167 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:10:28,253 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:10:28,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:10:28,259 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:10:28,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:28 BoogieIcfgContainer [2022-01-11 00:10:28,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:10:28,261 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:10:28,261 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:10:28,262 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:10:28,264 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:28" (1/1) ... [2022-01-11 00:10:28,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:10:28 BasicIcfg [2022-01-11 00:10:28,304 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:10:28,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:10:28,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:10:28,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:10:28,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:10:27" (1/4) ... [2022-01-11 00:10:28,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4866d6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:10:28, skipping insertion in model container [2022-01-11 00:10:28,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:28" (2/4) ... [2022-01-11 00:10:28,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4866d6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:10:28, skipping insertion in model container [2022-01-11 00:10:28,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:28" (3/4) ... [2022-01-11 00:10:28,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4866d6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:10:28, skipping insertion in model container [2022-01-11 00:10:28,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:10:28" (4/4) ... [2022-01-11 00:10:28,310 INFO L111 eAbstractionObserver]: Analyzing ICFG afterrec-1.cTransformedIcfg [2022-01-11 00:10:28,313 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:10:28,314 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:10:28,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:10:28,365 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 [2022-01-11 00:10:28,365 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:10:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-11 00:10:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 00:10:28,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:28,382 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:28,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:28,386 INFO L85 PathProgramCache]: Analyzing trace with hash -697141404, now seen corresponding path program 1 times [2022-01-11 00:10:28,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:28,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532476750] [2022-01-11 00:10:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:28,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 00:10:28,522 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-11 00:10:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 00:10:28,584 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-11 00:10:28,585 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-11 00:10:28,586 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location fErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-11 00:10:28,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:10:28,592 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-11 00:10:28,594 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-11 00:10:28,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:10:28 BasicIcfg [2022-01-11 00:10:28,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-11 00:10:28,616 INFO L158 Benchmark]: Toolchain (without parser) took 760.64ms. Allocated memory was 188.7MB in the beginning and 246.4MB in the end (delta: 57.7MB). Free memory was 130.5MB in the beginning and 189.4MB in the end (delta: -58.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 00:10:28,616 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 188.7MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 00:10:28,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.12ms. Allocated memory was 188.7MB in the beginning and 246.4MB in the end (delta: 57.7MB). Free memory was 130.3MB in the beginning and 221.4MB in the end (delta: -91.1MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2022-01-11 00:10:28,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.82ms. Allocated memory is still 246.4MB. Free memory was 221.4MB in the beginning and 219.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-11 00:10:28,618 INFO L158 Benchmark]: Boogie Preprocessor took 11.37ms. Allocated memory is still 246.4MB. Free memory was 219.8MB in the beginning and 218.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 00:10:28,621 INFO L158 Benchmark]: RCFGBuilder took 185.17ms. Allocated memory is still 246.4MB. Free memory was 218.7MB in the beginning and 208.3MB in the end (delta: 10.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-11 00:10:28,621 INFO L158 Benchmark]: IcfgTransformer took 43.18ms. Allocated memory is still 246.4MB. Free memory was 208.3MB in the beginning and 206.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-11 00:10:28,622 INFO L158 Benchmark]: TraceAbstraction took 309.56ms. Allocated memory is still 246.4MB. Free memory was 205.6MB in the beginning and 189.4MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-01-11 00:10:28,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 188.7MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.12ms. Allocated memory was 188.7MB in the beginning and 246.4MB in the end (delta: 57.7MB). Free memory was 130.3MB in the beginning and 221.4MB in the end (delta: -91.1MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.82ms. Allocated memory is still 246.4MB. Free memory was 221.4MB in the beginning and 219.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.37ms. Allocated memory is still 246.4MB. Free memory was 219.8MB in the beginning and 218.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 185.17ms. Allocated memory is still 246.4MB. Free memory was 218.7MB in the beginning and 208.3MB in the end (delta: 10.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 43.18ms. Allocated memory is still 246.4MB. Free memory was 208.3MB in the beginning and 206.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 309.56ms. Allocated memory is still 246.4MB. Free memory was 205.6MB in the beginning and 189.4MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. 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: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] CALL f(4) VAL [\old(n)=4] [L6] COND FALSE !(n<3) [L7] n-- VAL [\old(n)=4, n=3] [L8] CALL f(n) VAL [\old(n)=3] [L6] COND FALSE !(n<3) [L7] n-- VAL [\old(n)=3, n=2] [L8] CALL f(n) VAL [\old(n)=2] [L6] COND TRUE n<3 VAL [\old(n)=2, n=2] [L8] RET f(n) VAL [\old(n)=3, n=2] [L9] reach_error() VAL [\old(n)=3, n=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2022-01-11 00:10:28,647 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...