/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/ldv-regression/recursive_list.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:32:07,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:32:07,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:32:07,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 23:32:07,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:32:07,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:32:07,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:32:07,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:32:07,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:32:07,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:32:07,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:32:07,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:32:07,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:32:07,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:32:07,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:32:07,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:32:07,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 23:32:07,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:32:07,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:32:07,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:32:07,981 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 [2022-01-10 23:32:08,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:32:08,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:32:08,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:32:08,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:32:08,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:32:08,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:32:08,013 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:32:08,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:32:08,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:32:08,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:32:08,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:32:08,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:32:08,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:32:08,014 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:32:08,014 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:32:08,014 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:32:08,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:32:08,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:32:08,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:32:08,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:32:08,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:32:08,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:32:08,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:32:08,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:32:08,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:32:08,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:32:08,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:32:08,015 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:32:08,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:32:08,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:32:08,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:32:08,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:32:08,016 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:32:08,016 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:32:08,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:32:08,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:32:08,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:32:08,231 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:32:08,235 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:32:08,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/recursive_list.i [2022-01-10 23:32:08,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8054c8bb7/640f70dc99fe4a3ebcdeb1278f8a8a98/FLAG69e513297 [2022-01-10 23:32:08,695 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:32:08,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/recursive_list.i [2022-01-10 23:32:08,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8054c8bb7/640f70dc99fe4a3ebcdeb1278f8a8a98/FLAG69e513297 [2022-01-10 23:32:08,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8054c8bb7/640f70dc99fe4a3ebcdeb1278f8a8a98 [2022-01-10 23:32:08,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:32:08,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:32:08,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:32:08,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:32:08,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:32:08,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:08,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11be973f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08, skipping insertion in model container [2022-01-10 23:32:08,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:08,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:32:08,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:32:08,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/recursive_list.i[409,422] [2022-01-10 23:32:08,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:32:08,928 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:32:08,941 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/recursive_list.i[409,422] [2022-01-10 23:32:08,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:32:08,961 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:32:08,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08 WrapperNode [2022-01-10 23:32:08,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:32:08,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:32:08,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:32:08,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:32:08,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:08,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:09,003 INFO L137 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 66 [2022-01-10 23:32:09,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:32:09,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:32:09,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:32:09,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:32:09,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:09,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:09,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:09,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:09,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:09,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:09,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:09,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:32:09,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:32:09,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:32:09,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:32:09,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (1/1) ... [2022-01-10 23:32:09,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:32:09,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:32:09,076 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 23:32:09,095 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 23:32:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 23:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 23:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 23:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 23:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 23:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:32:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 23:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 23:32:09,178 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:32:09,179 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:32:09,353 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:32:09,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:32:09,357 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 23:32:09,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:32:09 BoogieIcfgContainer [2022-01-10 23:32:09,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:32:09,358 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:32:09,359 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:32:09,359 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:32:09,361 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:32:09" (1/1) ... [2022-01-10 23:32:09,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:32:09 BasicIcfg [2022-01-10 23:32:09,413 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:32:09,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:32:09,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:32:09,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:32:09,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:32:08" (1/4) ... [2022-01-10 23:32:09,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9e65f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:32:09, skipping insertion in model container [2022-01-10 23:32:09,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:08" (2/4) ... [2022-01-10 23:32:09,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9e65f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:32:09, skipping insertion in model container [2022-01-10 23:32:09,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:32:09" (3/4) ... [2022-01-10 23:32:09,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9e65f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:32:09, skipping insertion in model container [2022-01-10 23:32:09,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:32:09" (4/4) ... [2022-01-10 23:32:09,418 INFO L111 eAbstractionObserver]: Analyzing ICFG recursive_list.iTransformedIcfg [2022-01-10 23:32:09,422 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:32:09,422 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 23:32:09,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:32:09,455 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 23:32:09,455 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 23:32:09,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:32:09,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 23:32:09,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:32:09,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:32:09,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:32:09,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:32:09,471 INFO L85 PathProgramCache]: Analyzing trace with hash -421940218, now seen corresponding path program 1 times [2022-01-10 23:32:09,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:32:09,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616581102] [2022-01-10 23:32:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:32:09,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:32:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 23:32:09,856 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 23:32:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 23:32:10,022 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 23:32:10,024 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 23:32:10,025 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 23:32:10,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:32:10,030 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-10 23:32:10,032 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 23:32:10,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:32:10 BasicIcfg [2022-01-10 23:32:10,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 23:32:10,066 INFO L158 Benchmark]: Toolchain (without parser) took 1346.89ms. Allocated memory is still 215.0MB. Free memory was 164.3MB in the beginning and 119.9MB in the end (delta: 44.4MB). Peak memory consumption was 44.2MB. Max. memory is 8.0GB. [2022-01-10 23:32:10,067 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 215.0MB. Free memory was 181.0MB in the beginning and 180.8MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 23:32:10,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.65ms. Allocated memory is still 215.0MB. Free memory was 164.2MB in the beginning and 191.3MB in the end (delta: -27.1MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2022-01-10 23:32:10,068 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.36ms. Allocated memory is still 215.0MB. Free memory was 190.7MB in the beginning and 189.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 23:32:10,068 INFO L158 Benchmark]: Boogie Preprocessor took 35.38ms. Allocated memory is still 215.0MB. Free memory was 189.2MB in the beginning and 188.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 23:32:10,069 INFO L158 Benchmark]: RCFGBuilder took 318.45ms. Allocated memory is still 215.0MB. Free memory was 188.1MB in the beginning and 175.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-10 23:32:10,069 INFO L158 Benchmark]: IcfgTransformer took 54.77ms. Allocated memory is still 215.0MB. Free memory was 175.0MB in the beginning and 171.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-10 23:32:10,069 INFO L158 Benchmark]: TraceAbstraction took 651.54ms. Allocated memory is still 215.0MB. Free memory was 170.8MB in the beginning and 119.9MB in the end (delta: 50.9MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2022-01-10 23:32:10,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 215.0MB. Free memory was 181.0MB in the beginning and 180.8MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 241.65ms. Allocated memory is still 215.0MB. Free memory was 164.2MB in the beginning and 191.3MB in the end (delta: -27.1MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.36ms. Allocated memory is still 215.0MB. Free memory was 190.7MB in the beginning and 189.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.38ms. Allocated memory is still 215.0MB. Free memory was 189.2MB in the beginning and 188.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 318.45ms. Allocated memory is still 215.0MB. Free memory was 188.1MB in the beginning and 175.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 54.77ms. Allocated memory is still 215.0MB. Free memory was 175.0MB in the beginning and 171.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 651.54ms. Allocated memory is still 215.0MB. Free memory was 170.8MB in the beginning and 119.9MB in the end (delta: 50.9MB). Peak memory consumption was 51.4MB. 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: 10]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int i = 1; VAL [i=1] [L39] struct list *l,m; [L40] l = &m [L41] l->next = 0 [L42] l->n = 0 [L44] CALL, EXPR append(l, 1) [L27] struct list *new_el; [L29] CALL, EXPR allocate_memory() [L22] return malloc(8U); [L29] RET, EXPR allocate_memory() [L29] new_el = allocate_memory() [L31] new_el->n = n [L32] new_el->next = l [L34] return new_el; VAL [\old(n)=1, \result={-13:0}, i=1, l={-9:0}, l={-9:0}, n=1, new_el={-13:0}] [L44] RET, EXPR append(l, 1) [L44] l = append(l, 1) [L45] CALL, EXPR append(l, 2) [L27] struct list *new_el; [L29] CALL, EXPR allocate_memory() [L22] return malloc(8U); [L29] RET, EXPR allocate_memory() [L29] new_el = allocate_memory() [L31] new_el->n = n [L32] new_el->next = l [L34] return new_el; VAL [\old(n)=2, \result={-12:0}, i=1, l={-13:0}, l={-13:0}, n=2, new_el={-12:0}] [L45] RET, EXPR append(l, 2) [L45] l = append(l, 2) [L50] EXPR l->next [L50] EXPR l->next->next [L50] EXPR l->next->next->n VAL [i=1, l={-12:0}, l->next={-13:0}, l->next->next={-9:0}, l->next->next->n=0, m={-9:0}] [L50] COND TRUE l->next->next->n == 0 [L50] CALL err() [L10] reach_error() VAL [i=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, 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=14occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 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! [2022-01-10 23:32:10,100 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...