/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_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/recursive_list.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:50:22,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:50:22,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:50:22,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:50:23,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 00:50:23,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 00:50:23,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 00:50:23,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 00:50:23,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:50:23,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:50:23,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:50:23,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:50:23,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:50:23,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:50:23,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:50:23,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:50:23,056 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:50:23,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:50:23,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:50:23,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:50:23,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:50:23,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:50:23,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:50:23,057 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:50:23,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:50:23,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:50:23,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:50:23,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:50:23,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:50:23,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:50:23,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:50:23,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:50:23,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:50:23,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:50:23,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:50:23,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:50:23,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:50:23,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:50:23,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:50:23,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:50:23,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:50:23,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:50:23,246 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:50:23,247 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:50:23,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/recursive_list.i [2022-01-10 00:50:23,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d9623ad/9ba0572ef6244c2d894166e8e7ee51d8/FLAG53277a553 [2022-01-10 00:50:23,633 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:50:23,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/recursive_list.i [2022-01-10 00:50:23,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d9623ad/9ba0572ef6244c2d894166e8e7ee51d8/FLAG53277a553 [2022-01-10 00:50:23,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d9623ad/9ba0572ef6244c2d894166e8e7ee51d8 [2022-01-10 00:50:23,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:50:23,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:50:23,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:50:23,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:50:23,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:50:23,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@907503e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23, skipping insertion in model container [2022-01-10 00:50:23,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:50:23,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:50:23,789 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 00:50:23,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:50:23,837 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:50:23,843 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 00:50:23,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:50:23,853 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:50:23,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23 WrapperNode [2022-01-10 00:50:23,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:50:23,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:50:23,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:50:23,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:50:23,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,875 INFO L137 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-01-10 00:50:23,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:50:23,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:50:23,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:50:23,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:50:23,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:50:23,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:50:23,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:50:23,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:50:23,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (1/1) ... [2022-01-10 00:50:23,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:50:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:50:23,916 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 00:50:23,934 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 00:50:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 00:50:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:50:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:50:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 00:50:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 00:50:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-10 00:50:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 00:50:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:50:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:50:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-10 00:50:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure append [2022-01-10 00:50:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2022-01-10 00:50:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 00:50:24,015 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:50:24,016 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:50:24,118 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:50:24,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:50:24,122 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 00:50:24,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:50:24 BoogieIcfgContainer [2022-01-10 00:50:24,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:50:24,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:50:24,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:50:24,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:50:24,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:50:23" (1/3) ... [2022-01-10 00:50:24,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e8b17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:50:24, skipping insertion in model container [2022-01-10 00:50:24,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:23" (2/3) ... [2022-01-10 00:50:24,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e8b17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:50:24, skipping insertion in model container [2022-01-10 00:50:24,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:50:24" (3/3) ... [2022-01-10 00:50:24,133 INFO L111 eAbstractionObserver]: Analyzing ICFG recursive_list.i [2022-01-10 00:50:24,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:50:24,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:50:24,178 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:50:24,183 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 00:50:24,183 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:50:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-01-10 00:50:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 00:50:24,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:50:24,200 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:50:24,201 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:50:24,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:50:24,206 INFO L85 PathProgramCache]: Analyzing trace with hash -557630289, now seen corresponding path program 1 times [2022-01-10 00:50:24,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:50:24,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135975690] [2022-01-10 00:50:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:24,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:50:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 00:50:24,325 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 00:50:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 00:50:24,401 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 00:50:24,403 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 00:50:24,403 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 00:50:24,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:50:24,407 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-10 00:50:24,409 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 00:50:24,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:50:24 BoogieIcfgContainer [2022-01-10 00:50:24,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 00:50:24,442 INFO L158 Benchmark]: Toolchain (without parser) took 793.57ms. Allocated memory is still 188.7MB. Free memory was 138.0MB in the beginning and 131.2MB in the end (delta: 6.9MB). Peak memory consumption was 6.7MB. Max. memory is 8.0GB. [2022-01-10 00:50:24,443 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 188.7MB. Free memory was 154.8MB in the beginning and 154.7MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 00:50:24,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.88ms. Allocated memory is still 188.7MB. Free memory was 137.8MB in the beginning and 164.7MB in the end (delta: -26.9MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-01-10 00:50:24,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.45ms. Allocated memory is still 188.7MB. Free memory was 164.7MB in the beginning and 163.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 00:50:24,445 INFO L158 Benchmark]: Boogie Preprocessor took 12.48ms. Allocated memory is still 188.7MB. Free memory was 163.2MB in the beginning and 162.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 00:50:24,448 INFO L158 Benchmark]: RCFGBuilder took 234.76ms. Allocated memory is still 188.7MB. Free memory was 162.1MB in the beginning and 150.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-10 00:50:24,448 INFO L158 Benchmark]: TraceAbstraction took 317.04ms. Allocated memory is still 188.7MB. Free memory was 150.0MB in the beginning and 131.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-01-10 00:50:24,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 188.7MB. Free memory was 154.8MB in the beginning and 154.7MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.88ms. Allocated memory is still 188.7MB. Free memory was 137.8MB in the beginning and 164.7MB in the end (delta: -26.9MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.45ms. Allocated memory is still 188.7MB. Free memory was 164.7MB in the beginning and 163.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.48ms. Allocated memory is still 188.7MB. Free memory was 163.2MB in the beginning and 162.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 234.76ms. Allocated memory is still 188.7MB. Free memory was 162.1MB in the beginning and 150.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 317.04ms. Allocated memory is still 188.7MB. Free memory was 150.0MB in the beginning and 131.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 VAL [i=1, l={5:0}, m={5:0}] [L44] CALL, EXPR append(l, 1) VAL [i=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={-1:0}, i=1, l={5:0}, l={5:0}, n=1, new_el={-1:0}] [L44] RET, EXPR append(l, 1) VAL [append(l, 1)={-1:0}, i=1, l={5:0}, m={5:0}] [L44] l = append(l, 1) [L45] CALL, EXPR append(l, 2) VAL [i=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)=2, \result={-2:0}, i=1, l={-1:0}, l={-1:0}, n=2, new_el={-2:0}] [L45] RET, EXPR append(l, 2) VAL [append(l, 2)={-2:0}, i=1, l={-1:0}, m={5:0}] [L45] l = append(l, 2) [L50] EXPR l->next [L50] EXPR l->next->next [L50] EXPR l->next->next->n VAL [i=1, l={-2:0}, l->next={-1:0}, l->next->next={5:0}, l->next->next->n=0, m={5:0}] [L50] COND TRUE l->next->next->n == 0 [L50] CALL err() [L10] reach_error() VAL [i=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, 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=18occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 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 00:50:24,513 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...