./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/aviad_true-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/aviad_true-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash da65a08be7a694e995d17e45362055fa5f60ddf40e08c5ba36204464b294ccf0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:39,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:39,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2023-11-19 05:07:39,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:39,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:39,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:39,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:39,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:39,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:39,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:39,344 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:39,345 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:39,345 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:39,347 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:07:39,348 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:39,348 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:39,348 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:07:39,349 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:07:39,349 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:39,350 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:07:39,350 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:07:39,350 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:07:39,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:07:39,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:07:39,352 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:39,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:39,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:39,354 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:07:39,354 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:07:39,354 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:07:39,355 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:39,356 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:07:39,356 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:07:39,356 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:39,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:39,357 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:39,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:39,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:39,357 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:39,358 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:07:39,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:07:39,358 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:39,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:39,358 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da65a08be7a694e995d17e45362055fa5f60ddf40e08c5ba36204464b294ccf0 [2023-11-19 05:07:39,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:39,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:39,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:39,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:39,746 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:39,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/termination-memory-alloca/aviad_true-alloca.i [2023-11-19 05:07:42,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:43,223 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:43,224 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/sv-benchmarks/c/termination-memory-alloca/aviad_true-alloca.i [2023-11-19 05:07:43,239 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/data/2368257c9/e60bc8ee83e5440381c33959c1873753/FLAG42347b9d7 [2023-11-19 05:07:43,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/data/2368257c9/e60bc8ee83e5440381c33959c1873753 [2023-11-19 05:07:43,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:43,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:43,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:43,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:43,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:43,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2e6266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43, skipping insertion in model container [2023-11-19 05:07:43,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,315 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:43,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:43,587 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:07:43,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:43,661 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:07:43,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43 WrapperNode [2023-11-19 05:07:43,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:43,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:43,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:07:43,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:07:43,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,718 INFO L138 Inliner]: procedures = 111, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-11-19 05:07:43,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:43,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:07:43,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:07:43,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:07:43,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:07:43,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:07:43,777 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:07:43,777 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:07:43,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:43,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:43,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:07:43,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:07:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:07:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:07:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:07:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:07:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:07:43,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:07:43,986 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:07:43,989 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:07:44,283 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:07:44,334 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:07:44,338 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:07:44,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:44 BoogieIcfgContainer [2023-11-19 05:07:44,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:07:44,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:07:44,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:07:44,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:07:44,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:07:43" (1/3) ... [2023-11-19 05:07:44,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256ec537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:44, skipping insertion in model container [2023-11-19 05:07:44,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43" (2/3) ... [2023-11-19 05:07:44,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256ec537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:44, skipping insertion in model container [2023-11-19 05:07:44,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:44" (3/3) ... [2023-11-19 05:07:44,353 INFO L112 eAbstractionObserver]: Analyzing ICFG aviad_true-alloca.i [2023-11-19 05:07:44,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:07:44,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2023-11-19 05:07:44,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:07:44,428 INFO L357 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, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@145d77f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:07:44,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-19 05:07:44,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 47 states have internal predecessors, (50), 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) [2023-11-19 05:07:44,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 05:07:44,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:44,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 05:07:44,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-19 05:07:44,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash 3507, now seen corresponding path program 1 times [2023-11-19 05:07:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:44,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081354865] [2023-11-19 05:07:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:44,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:07:44,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:44,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081354865] [2023-11-19 05:07:44,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081354865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:44,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:44,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:07:44,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764191274] [2023-11-19 05:07:44,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:44,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:44,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:44,903 INFO L87 Difference]: Start difference. First operand has 48 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 47 states have internal predecessors, (50), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-19 05:07:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:44,993 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2023-11-19 05:07:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:44,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2023-11-19 05:07:44,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:45,004 INFO L225 Difference]: With dead ends: 41 [2023-11-19 05:07:45,005 INFO L226 Difference]: Without dead ends: 40 [2023-11-19 05:07:45,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,011 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:45,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 12 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:07:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-19 05:07:45,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-19 05:07:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 39 states have internal predecessors, (41), 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) [2023-11-19 05:07:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2023-11-19 05:07:45,048 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 2 [2023-11-19 05:07:45,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:45,048 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2023-11-19 05:07:45,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-19 05:07:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2023-11-19 05:07:45,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 05:07:45,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:45,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 05:07:45,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:07:45,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-19 05:07:45,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:45,052 INFO L85 PathProgramCache]: Analyzing trace with hash 3508, now seen corresponding path program 1 times [2023-11-19 05:07:45,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:45,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430461171] [2023-11-19 05:07:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:45,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:07:45,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:45,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430461171] [2023-11-19 05:07:45,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430461171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:45,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:45,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:07:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091830038] [2023-11-19 05:07:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:45,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:45,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:45,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,330 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-19 05:07:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:45,421 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2023-11-19 05:07:45,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:45,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2023-11-19 05:07:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:45,425 INFO L225 Difference]: With dead ends: 33 [2023-11-19 05:07:45,426 INFO L226 Difference]: Without dead ends: 33 [2023-11-19 05:07:45,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,428 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:45,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 13 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:07:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-19 05:07:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-19 05:07:45,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 32 states have internal predecessors, (34), 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) [2023-11-19 05:07:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2023-11-19 05:07:45,434 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 2 [2023-11-19 05:07:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:45,437 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2023-11-19 05:07:45,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-19 05:07:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-11-19 05:07:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:07:45,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:45,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:07:45,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:07:45,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-19 05:07:45,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash 108693, now seen corresponding path program 1 times [2023-11-19 05:07:45,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:45,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332959782] [2023-11-19 05:07:45,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:07:45,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:45,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332959782] [2023-11-19 05:07:45,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332959782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:45,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:45,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:07:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151332203] [2023-11-19 05:07:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:45,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,570 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 05:07:45,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:45,612 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-11-19 05:07:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2023-11-19 05:07:45,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:45,613 INFO L225 Difference]: With dead ends: 30 [2023-11-19 05:07:45,614 INFO L226 Difference]: Without dead ends: 30 [2023-11-19 05:07:45,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,616 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:45,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 9 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:07:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-19 05:07:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-19 05:07:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 29 states have internal predecessors, (31), 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) [2023-11-19 05:07:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2023-11-19 05:07:45,622 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 3 [2023-11-19 05:07:45,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:45,623 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2023-11-19 05:07:45,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 05:07:45,623 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2023-11-19 05:07:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:07:45,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:45,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:07:45,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:07:45,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-19 05:07:45,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:45,625 INFO L85 PathProgramCache]: Analyzing trace with hash 108694, now seen corresponding path program 1 times [2023-11-19 05:07:45,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:45,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838274441] [2023-11-19 05:07:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:45,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:07:45,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:45,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838274441] [2023-11-19 05:07:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838274441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:45,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:45,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:07:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764171422] [2023-11-19 05:07:45,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:45,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:45,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:45,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:45,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,725 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 05:07:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:45,761 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-11-19 05:07:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:45,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2023-11-19 05:07:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:45,763 INFO L225 Difference]: With dead ends: 27 [2023-11-19 05:07:45,763 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 05:07:45,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,766 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:45,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:07:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 05:07:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-19 05:07:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 26 states have internal predecessors, (28), 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) [2023-11-19 05:07:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-11-19 05:07:45,771 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 3 [2023-11-19 05:07:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:45,772 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-11-19 05:07:45,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 05:07:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-11-19 05:07:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:07:45,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:45,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:07:45,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:07:45,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-19 05:07:45,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:45,775 INFO L85 PathProgramCache]: Analyzing trace with hash 3369462, now seen corresponding path program 1 times [2023-11-19 05:07:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:45,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541107080] [2023-11-19 05:07:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:07:45,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:45,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541107080] [2023-11-19 05:07:45,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541107080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:45,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:45,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:07:45,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328961170] [2023-11-19 05:07:45,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:45,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:45,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:45,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:45,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,847 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-19 05:07:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:45,885 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-11-19 05:07:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:45,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2023-11-19 05:07:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:45,886 INFO L225 Difference]: With dead ends: 23 [2023-11-19 05:07:45,887 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 05:07:45,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,888 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:45,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:07:45,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 05:07:45,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-19 05:07:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 22 states have internal predecessors, (24), 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) [2023-11-19 05:07:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-19 05:07:45,893 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 4 [2023-11-19 05:07:45,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:45,894 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-19 05:07:45,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-19 05:07:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-19 05:07:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:07:45,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:45,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:07:45,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:07:45,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-19 05:07:45,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash 3369463, now seen corresponding path program 1 times [2023-11-19 05:07:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:45,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101587102] [2023-11-19 05:07:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:45,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:07:45,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:45,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101587102] [2023-11-19 05:07:45,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101587102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:45,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:45,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:07:45,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368984213] [2023-11-19 05:07:45,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:45,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:45,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:45,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:45,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,965 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-19 05:07:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:45,996 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-11-19 05:07:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:45,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2023-11-19 05:07:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:45,997 INFO L225 Difference]: With dead ends: 19 [2023-11-19 05:07:45,997 INFO L226 Difference]: Without dead ends: 19 [2023-11-19 05:07:45,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:45,999 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:45,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:07:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-19 05:07:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-19 05:07:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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) [2023-11-19 05:07:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-11-19 05:07:46,003 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2023-11-19 05:07:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:46,003 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-11-19 05:07:46,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-19 05:07:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-11-19 05:07:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:07:46,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:46,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:46,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:07:46,005 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-19 05:07:46,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:46,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2082798061, now seen corresponding path program 1 times [2023-11-19 05:07:46,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:46,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478689475] [2023-11-19 05:07:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:46,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:07:46,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:46,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478689475] [2023-11-19 05:07:46,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478689475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:46,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:46,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:07:46,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637683086] [2023-11-19 05:07:46,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:46,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:07:46,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:07:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:07:46,319 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-19 05:07:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:46,367 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2023-11-19 05:07:46,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:07:46,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2023-11-19 05:07:46,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:46,370 INFO L225 Difference]: With dead ends: 18 [2023-11-19 05:07:46,370 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:07:46,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:07:46,373 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:46,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:07:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:07:46,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:07:46,377 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) [2023-11-19 05:07:46,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:07:46,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2023-11-19 05:07:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:46,378 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:07:46,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-19 05:07:46,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:07:46,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:07:46,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 29 remaining) [2023-11-19 05:07:46,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 29 remaining) [2023-11-19 05:07:46,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 29 remaining) [2023-11-19 05:07:46,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 29 remaining) [2023-11-19 05:07:46,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 29 remaining) [2023-11-19 05:07:46,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 29 remaining) [2023-11-19 05:07:46,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 29 remaining) [2023-11-19 05:07:46,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 29 remaining) [2023-11-19 05:07:46,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 29 remaining) [2023-11-19 05:07:46,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 29 remaining) [2023-11-19 05:07:46,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 29 remaining) [2023-11-19 05:07:46,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 29 remaining) [2023-11-19 05:07:46,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 29 remaining) [2023-11-19 05:07:46,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 29 remaining) [2023-11-19 05:07:46,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 29 remaining) [2023-11-19 05:07:46,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 29 remaining) [2023-11-19 05:07:46,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 29 remaining) [2023-11-19 05:07:46,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 29 remaining) [2023-11-19 05:07:46,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 29 remaining) [2023-11-19 05:07:46,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 29 remaining) [2023-11-19 05:07:46,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 29 remaining) [2023-11-19 05:07:46,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 29 remaining) [2023-11-19 05:07:46,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 29 remaining) [2023-11-19 05:07:46,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 29 remaining) [2023-11-19 05:07:46,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 29 remaining) [2023-11-19 05:07:46,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 29 remaining) [2023-11-19 05:07:46,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 29 remaining) [2023-11-19 05:07:46,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 29 remaining) [2023-11-19 05:07:46,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (0 of 29 remaining) [2023-11-19 05:07:46,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:07:46,394 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:46,396 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:07:46,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:07:46 BoogieIcfgContainer [2023-11-19 05:07:46,401 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:07:46,402 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:07:46,402 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:07:46,402 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:07:46,403 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:44" (3/4) ... [2023-11-19 05:07:46,405 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:07:46,416 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-19 05:07:46,417 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 05:07:46,417 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 05:07:46,417 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 05:07:46,530 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:07:46,531 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:07:46,531 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:07:46,532 INFO L158 Benchmark]: Toolchain (without parser) took 3272.00ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 96.4MB in the beginning and 121.9MB in the end (delta: -25.5MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2023-11-19 05:07:46,532 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory was 55.2MB in the beginning and 55.0MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:07:46,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.45ms. Allocated memory is still 142.6MB. Free memory was 96.2MB in the beginning and 80.3MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:07:46,533 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.88ms. Allocated memory is still 142.6MB. Free memory was 80.3MB in the beginning and 78.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:07:46,533 INFO L158 Benchmark]: Boogie Preprocessor took 44.59ms. Allocated memory is still 142.6MB. Free memory was 78.3MB in the beginning and 77.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:07:46,534 INFO L158 Benchmark]: RCFGBuilder took 567.11ms. Allocated memory is still 142.6MB. Free memory was 77.1MB in the beginning and 105.8MB in the end (delta: -28.7MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-11-19 05:07:46,534 INFO L158 Benchmark]: TraceAbstraction took 2054.87ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 105.2MB in the beginning and 127.1MB in the end (delta: -21.9MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-11-19 05:07:46,535 INFO L158 Benchmark]: Witness Printer took 129.33ms. Allocated memory is still 176.2MB. Free memory was 126.1MB in the beginning and 121.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:07:46,538 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory was 55.2MB in the beginning and 55.0MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.45ms. Allocated memory is still 142.6MB. Free memory was 96.2MB in the beginning and 80.3MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.88ms. Allocated memory is still 142.6MB. Free memory was 80.3MB in the beginning and 78.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.59ms. Allocated memory is still 142.6MB. Free memory was 78.3MB in the beginning and 77.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 567.11ms. Allocated memory is still 142.6MB. Free memory was 77.1MB in the beginning and 105.8MB in the end (delta: -28.7MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2054.87ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 105.2MB in the beginning and 127.1MB in the end (delta: -21.9MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Witness Printer took 129.33ms. Allocated memory is still 176.2MB. Free memory was 126.1MB in the beginning and 121.9MB in the end (delta: 4.2MB). 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 562]: 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 1 procedures, 48 locations, 29 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 56 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 237 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 29 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 05:07:46,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a228846e-0662-45bc-980d-89b24c5e9f65/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE