./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3f34751565a9d43a481fab038d13037e70cdccbf .................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 19:13:04,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:13:04,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:13:04,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:13:04,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:13:04,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:13:04,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:13:04,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:13:04,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:13:04,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:13:04,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:13:04,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:13:04,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:13:04,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:13:04,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:13:04,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:13:04,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:13:04,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:13:04,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:13:04,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:13:04,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:13:04,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:13:04,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:13:04,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:13:04,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:13:04,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:13:04,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:13:04,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:13:04,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:13:04,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:13:04,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:13:04,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:13:04,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:13:04,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:13:04,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:13:04,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:13:04,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:13:04,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:13:04,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:13:04,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:13:04,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:13:04,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-08-30 19:13:04,982 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:13:04,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:13:04,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:13:04,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:13:04,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:13:04,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:13:04,985 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:13:04,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:13:04,985 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:13:04,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:13:04,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:13:04,986 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:13:04,986 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:13:04,986 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:13:04,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:13:04,987 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:13:04,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:13:04,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:13:04,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:13:04,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:13:04,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:13:04,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:13:04,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:13:04,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 19:13:04,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 19:13:04,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:13:04,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f34751565a9d43a481fab038d13037e70cdccbf [2021-08-30 19:13:05,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:13:05,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:13:05,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:13:05,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:13:05,251 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:13:05,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2021-08-30 19:13:05,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba67d206/4b9cde39f0ce4f3388581262f3b84832/FLAG114560f3e [2021-08-30 19:13:05,633 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:13:05,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2021-08-30 19:13:05,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba67d206/4b9cde39f0ce4f3388581262f3b84832/FLAG114560f3e [2021-08-30 19:13:06,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba67d206/4b9cde39f0ce4f3388581262f3b84832 [2021-08-30 19:13:06,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:13:06,082 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:13:06,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:13:06,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:13:06,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:13:06,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:13:06" (1/1) ... [2021-08-30 19:13:06,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f31ad02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06, skipping insertion in model container [2021-08-30 19:13:06,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:13:06" (1/1) ... [2021-08-30 19:13:06,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:13:06,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:13:06,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:13:06,182 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 19:13:06,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:13:06,197 INFO L208 MainTranslator]: Completed translation [2021-08-30 19:13:06,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06 WrapperNode [2021-08-30 19:13:06,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:13:06,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 19:13:06,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 19:13:06,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 19:13:06,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06" (1/1) ... [2021-08-30 19:13:06,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06" (1/1) ... [2021-08-30 19:13:06,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06" (1/1) ... [2021-08-30 19:13:06,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06" (1/1) ... [2021-08-30 19:13:06,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06" (1/1) ... [2021-08-30 19:13:06,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06" (1/1) ... [2021-08-30 19:13:06,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06" (1/1) ... [2021-08-30 19:13:06,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 19:13:06,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 19:13:06,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 19:13:06,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 19:13:06,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06" (1/1) ... [2021-08-30 19:13:06,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:13:06,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:06,315 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) [2021-08-30 19:13:06,357 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 [2021-08-30 19:13:06,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 19:13:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 19:13:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 19:13:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 19:13:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 19:13:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 19:13:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 19:13:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 19:13:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 19:13:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 19:13:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 19:13:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 19:13:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 19:13:06,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 19:13:06,503 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 19:13:06,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:13:06 BoogieIcfgContainer [2021-08-30 19:13:06,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 19:13:06,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 19:13:06,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 19:13:06,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 19:13:06,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:13:06" (1/3) ... [2021-08-30 19:13:06,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10205a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:13:06, skipping insertion in model container [2021-08-30 19:13:06,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:13:06" (2/3) ... [2021-08-30 19:13:06,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10205a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:13:06, skipping insertion in model container [2021-08-30 19:13:06,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:13:06" (3/3) ... [2021-08-30 19:13:06,510 INFO L111 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-3.c [2021-08-30 19:13:06,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 19:13:06,516 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-08-30 19:13:06,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 19:13:06,567 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-08-30 19:13:06,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-08-30 19:13:06,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:13:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 19:13:06,590 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:06,591 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:06,591 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-08-30 19:13:06,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash 222801388, now seen corresponding path program 1 times [2021-08-30 19:13:06,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:06,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519755917] [2021-08-30 19:13:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:06,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:13:06,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:06,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519755917] [2021-08-30 19:13:06,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519755917] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:06,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:06,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 19:13:06,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670308704] [2021-08-30 19:13:06,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:13:06,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:06,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:13:06,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:13:06,847 INFO L87 Difference]: Start difference. First operand has 29 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:06,925 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-08-30 19:13:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:13:06,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 19:13:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:06,931 INFO L225 Difference]: With dead ends: 25 [2021-08-30 19:13:06,931 INFO L226 Difference]: Without dead ends: 22 [2021-08-30 19:13:06,933 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.11ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:13:06,935 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.15ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:06,936 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 54 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 39.15ms Time] [2021-08-30 19:13:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-30 19:13:06,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-30 19:13:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:06,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-08-30 19:13:06,955 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 7 [2021-08-30 19:13:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:06,955 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-08-30 19:13:06,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-08-30 19:13:06,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 19:13:06,956 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:06,956 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:06,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 19:13:06,956 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-08-30 19:13:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:06,957 INFO L82 PathProgramCache]: Analyzing trace with hash 222801389, now seen corresponding path program 1 times [2021-08-30 19:13:06,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:06,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246424244] [2021-08-30 19:13:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:06,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:13:06,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:06,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246424244] [2021-08-30 19:13:06,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246424244] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:06,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:06,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 19:13:06,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307410504] [2021-08-30 19:13:06,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:13:06,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:13:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:13:06,999 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:07,024 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-08-30 19:13:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:13:07,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 19:13:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:07,025 INFO L225 Difference]: With dead ends: 18 [2021-08-30 19:13:07,025 INFO L226 Difference]: Without dead ends: 18 [2021-08-30 19:13:07,025 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.56ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:13:07,026 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.65ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:07,026 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 7 Invalid, 36 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 21.65ms Time] [2021-08-30 19:13:07,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-30 19:13:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-08-30 19:13:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. 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), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-08-30 19:13:07,033 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2021-08-30 19:13:07,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:07,033 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-08-30 19:13:07,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:07,033 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-08-30 19:13:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 19:13:07,033 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:07,034 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:07,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 19:13:07,034 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-08-30 19:13:07,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:07,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1751663173, now seen corresponding path program 1 times [2021-08-30 19:13:07,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:07,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966779658] [2021-08-30 19:13:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:07,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:13:07,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:07,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966779658] [2021-08-30 19:13:07,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966779658] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:07,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:07,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 19:13:07,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383249920] [2021-08-30 19:13:07,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:13:07,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:13:07,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:13:07,068 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:07,087 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-08-30 19:13:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:13:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 19:13:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:07,089 INFO L225 Difference]: With dead ends: 17 [2021-08-30 19:13:07,089 INFO L226 Difference]: Without dead ends: 17 [2021-08-30 19:13:07,089 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.10ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:13:07,090 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.09ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:07,090 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 7 Invalid, 31 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 17.09ms Time] [2021-08-30 19:13:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-30 19:13:07,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-30 19:13:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-08-30 19:13:07,093 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2021-08-30 19:13:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:07,094 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-08-30 19:13:07,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-08-30 19:13:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 19:13:07,095 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:07,095 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:07,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 19:13:07,095 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr9ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-08-30 19:13:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:07,096 INFO L82 PathProgramCache]: Analyzing trace with hash -278868728, now seen corresponding path program 1 times [2021-08-30 19:13:07,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:07,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300224357] [2021-08-30 19:13:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:07,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:07,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:13:07,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:07,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300224357] [2021-08-30 19:13:07,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300224357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:07,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:07,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:13:07,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230994597] [2021-08-30 19:13:07,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 19:13:07,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 19:13:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:13:07,141 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:07,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:07,172 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-08-30 19:13:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 19:13:07,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-30 19:13:07,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:07,173 INFO L225 Difference]: With dead ends: 16 [2021-08-30 19:13:07,173 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 19:13:07,173 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.59ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:13:07,174 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.57ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.94ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:07,174 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 45 Unknown, 0 Unchecked, 0.57ms Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 20.94ms Time] [2021-08-30 19:13:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 19:13:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 19:13:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 19:13:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 19:13:07,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-08-30 19:13:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:07,176 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 19:13:07,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:13:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 19:13:07,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 19:13:07,178 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION (9 of 10 remaining) [2021-08-30 19:13:07,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION (8 of 10 remaining) [2021-08-30 19:13:07,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION (7 of 10 remaining) [2021-08-30 19:13:07,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION (6 of 10 remaining) [2021-08-30 19:13:07,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION (5 of 10 remaining) [2021-08-30 19:13:07,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION (4 of 10 remaining) [2021-08-30 19:13:07,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6ASSERT_VIOLATIONMEMORY_FREE (3 of 10 remaining) [2021-08-30 19:13:07,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 10 remaining) [2021-08-30 19:13:07,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 10 remaining) [2021-08-30 19:13:07,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9ENSURES_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2021-08-30 19:13:07,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 19:13:07,183 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 19:13:07,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:13:07 BoogieIcfgContainer [2021-08-30 19:13:07,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 19:13:07,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 19:13:07,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 19:13:07,186 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 19:13:07,186 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:13:06" (3/4) ... [2021-08-30 19:13:07,188 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 19:13:07,192 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-30 19:13:07,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-30 19:13:07,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-30 19:13:07,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-30 19:13:07,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 19:13:07,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 19:13:07,215 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 19:13:07,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 19:13:07,216 INFO L158 Benchmark]: Toolchain (without parser) took 1133.65ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 37.4MB in the beginning and 49.3MB in the end (delta: -11.9MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-08-30 19:13:07,216 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 44.0MB. Free memory was 26.0MB in the beginning and 25.9MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:13:07,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 113.63ms. Allocated memory is still 54.5MB. Free memory was 37.1MB in the beginning and 28.5MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 19:13:07,216 INFO L158 Benchmark]: Boogie Preprocessor took 74.64ms. Allocated memory is still 54.5MB. Free memory was 28.5MB in the beginning and 38.5MB in the end (delta: -10.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 19:13:07,217 INFO L158 Benchmark]: RCFGBuilder took 230.96ms. Allocated memory is still 54.5MB. Free memory was 38.3MB in the beginning and 29.9MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-30 19:13:07,217 INFO L158 Benchmark]: TraceAbstraction took 679.39ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 29.4MB in the beginning and 34.8MB in the end (delta: -5.4MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2021-08-30 19:13:07,217 INFO L158 Benchmark]: Witness Printer took 29.67ms. Allocated memory is still 67.1MB. Free memory was 34.8MB in the beginning and 49.3MB in the end (delta: -14.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 19:13:07,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 44.0MB. Free memory was 26.0MB in the beginning and 25.9MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 113.63ms. Allocated memory is still 54.5MB. Free memory was 37.1MB in the beginning and 28.5MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.64ms. Allocated memory is still 54.5MB. Free memory was 28.5MB in the beginning and 38.5MB in the end (delta: -10.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 230.96ms. Allocated memory is still 54.5MB. Free memory was 38.3MB in the beginning and 29.9MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 679.39ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 29.4MB in the beginning and 34.8MB in the end (delta: -5.4MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * Witness Printer took 29.67ms. Allocated memory is still 67.1MB. Free memory was 34.8MB in the beginning and 49.3MB in the end (delta: -14.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 626.05ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.04ms, AutomataDifference: 223.20ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 13.29ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 98.84ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 77.94ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 152 IncrementalHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 13 mSDtfsCounter, 152 mSolverCounterSat, 2.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.36ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 19.15ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.08ms SsaConstructionTime, 40.26ms SatisfiabilityAnalysisTime, 197.78ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-30 19:13:07,242 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...