./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-crafted/Arrays02-EquivalentConstantIndices.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/Arrays02-EquivalentConstantIndices.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 072df04afae5ae28487e0b8208c52f13961dea34 ........................................................................................................................................................................................................................................................................................................................................................................................ 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 16:50:59,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 16:50:59,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 16:50:59,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 16:50:59,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 16:50:59,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 16:50:59,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 16:50:59,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 16:50:59,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 16:50:59,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 16:50:59,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 16:50:59,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 16:50:59,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 16:50:59,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 16:50:59,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 16:50:59,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 16:50:59,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 16:50:59,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 16:50:59,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 16:50:59,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 16:50:59,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 16:50:59,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 16:50:59,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 16:50:59,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 16:50:59,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 16:50:59,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 16:50:59,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 16:50:59,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 16:50:59,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 16:50:59,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 16:50:59,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 16:50:59,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 16:50:59,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 16:50:59,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 16:50:59,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 16:50:59,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 16:50:59,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 16:50:59,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 16:50:59,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 16:50:59,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 16:50:59,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 16:50:59,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-08-30 16:50:59,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 16:50:59,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 16:50:59,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 16:50:59,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 16:50:59,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 16:50:59,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 16:50:59,576 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 16:50:59,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 16:50:59,576 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 16:50:59,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 16:50:59,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 16:50:59,577 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 16:50:59,577 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 16:50:59,577 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 16:50:59,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 16:50:59,578 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 16:50:59,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 16:50:59,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 16:50:59,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 16:50:59,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 16:50:59,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:50:59,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 16:50:59,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 16:50:59,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 16:50:59,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 16:50:59,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 16:50:59,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 072df04afae5ae28487e0b8208c52f13961dea34 [2021-08-30 16:50:59,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 16:50:59,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 16:50:59,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 16:50:59,874 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 16:50:59,875 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 16:50:59,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Arrays02-EquivalentConstantIndices.c [2021-08-30 16:50:59,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0593c6df7/c7b5b303dd57414eb73bec180fc37719/FLAG8cfb059c9 [2021-08-30 16:51:00,292 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 16:51:00,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Arrays02-EquivalentConstantIndices.c [2021-08-30 16:51:00,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0593c6df7/c7b5b303dd57414eb73bec180fc37719/FLAG8cfb059c9 [2021-08-30 16:51:00,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0593c6df7/c7b5b303dd57414eb73bec180fc37719 [2021-08-30 16:51:00,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 16:51:00,726 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 16:51:00,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 16:51:00,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 16:51:00,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 16:51:00,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:51:00" (1/1) ... [2021-08-30 16:51:00,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a4c851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00, skipping insertion in model container [2021-08-30 16:51:00,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:51:00" (1/1) ... [2021-08-30 16:51:00,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 16:51:00,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 16:51:00,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:51:00,831 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 16:51:00,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:51:00,866 INFO L208 MainTranslator]: Completed translation [2021-08-30 16:51:00,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00 WrapperNode [2021-08-30 16:51:00,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 16:51:00,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 16:51:00,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 16:51:00,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 16:51:00,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00" (1/1) ... [2021-08-30 16:51:00,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00" (1/1) ... [2021-08-30 16:51:00,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00" (1/1) ... [2021-08-30 16:51:00,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00" (1/1) ... [2021-08-30 16:51:00,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00" (1/1) ... [2021-08-30 16:51:00,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00" (1/1) ... [2021-08-30 16:51:00,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00" (1/1) ... [2021-08-30 16:51:00,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 16:51:00,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 16:51:00,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 16:51:00,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 16:51:00,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00" (1/1) ... [2021-08-30 16:51:00,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:51:00,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:51:00,935 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 16:51:00,942 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 16:51:00,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 16:51:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 16:51:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 16:51:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 16:51:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 16:51:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 16:51:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 16:51:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 16:51:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 16:51:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 16:51:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 16:51:01,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 16:51:01,099 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 16:51:01,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:51:01 BoogieIcfgContainer [2021-08-30 16:51:01,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 16:51:01,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 16:51:01,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 16:51:01,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 16:51:01,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:51:00" (1/3) ... [2021-08-30 16:51:01,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc3aa5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:51:01, skipping insertion in model container [2021-08-30 16:51:01,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:00" (2/3) ... [2021-08-30 16:51:01,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc3aa5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:51:01, skipping insertion in model container [2021-08-30 16:51:01,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:51:01" (3/3) ... [2021-08-30 16:51:01,108 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays02-EquivalentConstantIndices.c [2021-08-30 16:51:01,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 16:51:01,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-30 16:51:01,147 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 16:51:01,154 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 16:51:01,154 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-30 16:51:01,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 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 16:51:01,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 16:51:01,176 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:51:01,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:51:01,177 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 16:51:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:51:01,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1997870250, now seen corresponding path program 1 times [2021-08-30 16:51:01,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:51:01,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247694292] [2021-08-30 16:51:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:51:01,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:51:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:51:01,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:51:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:51:01,362 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 16:51:01,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:51:01,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247694292] [2021-08-30 16:51:01,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247694292] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:51:01,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:51:01,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 16:51:01,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614292439] [2021-08-30 16:51:01,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:51:01,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:51:01,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:51:01,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:51:01,402 INFO L87 Difference]: Start difference. First operand has 31 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 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 16:51:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:51:01,481 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-08-30 16:51:01,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:51:01,483 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 16:51:01,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:51:01,487 INFO L225 Difference]: With dead ends: 26 [2021-08-30 16:51:01,487 INFO L226 Difference]: Without dead ends: 23 [2021-08-30 16:51:01,489 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.26ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:51:01,498 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.75ms IncrementalHoareTripleChecker+Time [2021-08-30 16:51:01,500 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 8 Invalid, 57 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 63.75ms Time] [2021-08-30 16:51:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-30 16:51:01,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-30 16:51:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 19 states have internal predecessors, (20), 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 16:51:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-08-30 16:51:01,521 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2021-08-30 16:51:01,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:51:01,522 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-08-30 16:51:01,522 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 16:51:01,522 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-08-30 16:51:01,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 16:51:01,522 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:51:01,522 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:51:01,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 16:51:01,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 16:51:01,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:51:01,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1997870251, now seen corresponding path program 1 times [2021-08-30 16:51:01,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:51:01,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167009845] [2021-08-30 16:51:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:51:01,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:51:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:51:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:51:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:51:01,572 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 16:51:01,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:51:01,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167009845] [2021-08-30 16:51:01,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167009845] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:51:01,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:51:01,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 16:51:01,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829141566] [2021-08-30 16:51:01,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:51:01,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:51:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:51:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:51:01,575 INFO L87 Difference]: Start difference. First operand 23 states and 23 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 16:51:01,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:51:01,603 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-08-30 16:51:01,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:51:01,603 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 16:51:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:51:01,604 INFO L225 Difference]: With dead ends: 18 [2021-08-30 16:51:01,604 INFO L226 Difference]: Without dead ends: 18 [2021-08-30 16:51:01,604 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.10ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:51:01,605 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.05ms IncrementalHoareTripleChecker+Time [2021-08-30 16:51:01,606 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 39 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 25.05ms Time] [2021-08-30 16:51:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-30 16:51:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-08-30 16:51:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) 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 16:51:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-08-30 16:51:01,608 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2021-08-30 16:51:01,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:51:01,609 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-08-30 16:51:01,609 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 16:51:01,609 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-08-30 16:51:01,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 16:51:01,609 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:51:01,609 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:51:01,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 16:51:01,610 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 16:51:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:51:01,610 INFO L82 PathProgramCache]: Analyzing trace with hash -270538361, now seen corresponding path program 1 times [2021-08-30 16:51:01,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:51:01,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016822979] [2021-08-30 16:51:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:51:01,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:51:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:51:01,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:51:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:51:01,670 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 16:51:01,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:51:01,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016822979] [2021-08-30 16:51:01,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016822979] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:51:01,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:51:01,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:51:01,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569612331] [2021-08-30 16:51:01,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:51:01,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:51:01,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:51:01,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:51:01,672 INFO L87 Difference]: Start difference. First operand 18 states and 18 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 16:51:01,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:51:01,714 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-08-30 16:51:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:51:01,715 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 16:51:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:51:01,715 INFO L225 Difference]: With dead ends: 17 [2021-08-30 16:51:01,715 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 16:51:01,715 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.68ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:51:01,716 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.90ms IncrementalHoareTripleChecker+Time [2021-08-30 16:51:01,717 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 48 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 38.90ms Time] [2021-08-30 16:51:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 16:51:01,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 16:51:01,717 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 16:51:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 16:51:01,738 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-08-30 16:51:01,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:51:01,738 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 16:51:01,738 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 16:51:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 16:51:01,739 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 16:51:01,740 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION (10 of 11 remaining) [2021-08-30 16:51:01,741 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION (9 of 11 remaining) [2021-08-30 16:51:01,741 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION (8 of 11 remaining) [2021-08-30 16:51:01,741 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION (7 of 11 remaining) [2021-08-30 16:51:01,741 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION (6 of 11 remaining) [2021-08-30 16:51:01,742 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION (5 of 11 remaining) [2021-08-30 16:51:01,742 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6REQUIRES_VIOLATION (4 of 11 remaining) [2021-08-30 16:51:01,742 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7REQUIRES_VIOLATION (3 of 11 remaining) [2021-08-30 16:51:01,742 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8REQUIRES_VIOLATION (2 of 11 remaining) [2021-08-30 16:51:01,742 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9REQUIRES_VIOLATION (1 of 11 remaining) [2021-08-30 16:51:01,742 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr10ENSURES_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2021-08-30 16:51:01,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 16:51:01,746 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 16:51:01,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:51:01 BoogieIcfgContainer [2021-08-30 16:51:01,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 16:51:01,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 16:51:01,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 16:51:01,749 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 16:51:01,750 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:51:01" (3/4) ... [2021-08-30 16:51:01,752 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 16:51:01,769 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-30 16:51:01,769 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-30 16:51:01,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-30 16:51:01,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-30 16:51:01,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 16:51:01,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 16:51:01,808 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 16:51:01,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 16:51:01,814 INFO L158 Benchmark]: Toolchain (without parser) took 1088.22ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.9MB in the beginning and 58.0MB in the end (delta: -12.1MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-08-30 16:51:01,818 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:51:01,818 INFO L158 Benchmark]: CACSL2BoogieTranslator took 138.46ms. Allocated memory is still 65.0MB. Free memory was 45.8MB in the beginning and 37.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 16:51:01,819 INFO L158 Benchmark]: Boogie Preprocessor took 46.81ms. Allocated memory is still 65.0MB. Free memory was 37.1MB in the beginning and 48.7MB in the end (delta: -11.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 16:51:01,819 INFO L158 Benchmark]: RCFGBuilder took 186.53ms. Allocated memory is still 65.0MB. Free memory was 48.7MB in the beginning and 40.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 16:51:01,819 INFO L158 Benchmark]: TraceAbstraction took 645.63ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 39.7MB in the beginning and 61.1MB in the end (delta: -21.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:51:01,820 INFO L158 Benchmark]: Witness Printer took 64.74ms. Allocated memory is still 79.7MB. Free memory was 61.1MB in the beginning and 58.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 16:51:01,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 138.46ms. Allocated memory is still 65.0MB. Free memory was 45.8MB in the beginning and 37.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.81ms. Allocated memory is still 65.0MB. Free memory was 37.1MB in the beginning and 48.7MB in the end (delta: -11.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 186.53ms. Allocated memory is still 65.0MB. Free memory was 48.7MB in the beginning and 40.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 645.63ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 39.7MB in the beginning and 61.1MB in the end (delta: -21.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 64.74ms. Allocated memory is still 79.7MB. Free memory was 61.1MB in the beginning and 58.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: 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: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 8]: 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, 31 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 599.54ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.83ms, AutomataDifference: 212.12ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.36ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 127.70ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 90.52ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 130 IncrementalHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 10 mSDtfsCounter, 130 mSolverCounterSat, 2.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.04ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 32.96ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.44ms SsaConstructionTime, 35.55ms SatisfiabilityAnalysisTime, 185.02ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 91 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-30 16:51:01,857 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...