./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5 --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 32bit --witnessprinter.graph.data.programhash 5006077e10b123684af5816f85c68609f620d4e536300995b347b7a57b1efc6a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:57:39,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:57:39,574 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 18:57:39,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:57:39,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:57:39,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:57:39,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:57:39,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:57:39,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:57:39,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:57:39,640 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:57:39,641 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:57:39,641 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:57:39,643 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 18:57:39,644 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:57:39,645 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:57:39,645 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 18:57:39,646 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 18:57:39,646 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:57:39,647 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 18:57:39,647 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 18:57:39,648 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 18:57:39,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:57:39,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:57:39,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:57:39,653 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:57:39,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:57:39,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:57:39,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:57:39,655 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 18:57:39,657 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 18:57:39,657 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 18:57:39,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:57:39,658 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:57:39,658 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:57:39,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:57:39,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:57:39,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:57:39,659 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:57:39,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:57:39,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:39,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:57:39,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:57:39,661 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 18:57:39,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:57:39,662 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:57:39,662 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:57:39,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:57:39,663 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_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5006077e10b123684af5816f85c68609f620d4e536300995b347b7a57b1efc6a [2023-11-21 18:57:40,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:57:40,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:57:40,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:57:40,085 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:57:40,085 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:57:40,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/memsafety-ext3/scopes1.c [2023-11-21 18:57:43,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:57:43,572 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:57:43,573 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/sv-benchmarks/c/memsafety-ext3/scopes1.c [2023-11-21 18:57:43,582 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/data/0a03b2095/f18a3c810f2e40aa8cef567e53e1579f/FLAG72be138f4 [2023-11-21 18:57:43,600 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/data/0a03b2095/f18a3c810f2e40aa8cef567e53e1579f [2023-11-21 18:57:43,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:57:43,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:57:43,607 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:43,607 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:57:43,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:57:43,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76731b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43, skipping insertion in model container [2023-11-21 18:57:43,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,639 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:57:43,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:43,882 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:57:43,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:43,922 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:57:43,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43 WrapperNode [2023-11-21 18:57:43,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:43,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:43,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:57:43,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:57:43,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,962 INFO L138 Inliner]: procedures = 9, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2023-11-21 18:57:43,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:43,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:57:43,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:57:43,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:57:43,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:43,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:57:43,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:57:43,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:57:43,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:57:43,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (1/1) ... [2023-11-21 18:57:44,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:44,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:57:44,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:57:44,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:57:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:57:44,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:57:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 18:57:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:57:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:57:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:57:44,184 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:57:44,186 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:57:44,314 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:57:44,354 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:57:44,355 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:57:44,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:44 BoogieIcfgContainer [2023-11-21 18:57:44,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:57:44,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:57:44,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:57:44,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:57:44,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:57:43" (1/3) ... [2023-11-21 18:57:44,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bd76ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:44, skipping insertion in model container [2023-11-21 18:57:44,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:43" (2/3) ... [2023-11-21 18:57:44,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bd76ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:44, skipping insertion in model container [2023-11-21 18:57:44,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:44" (3/3) ... [2023-11-21 18:57:44,368 INFO L112 eAbstractionObserver]: Analyzing ICFG scopes1.c [2023-11-21 18:57:44,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:57:44,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-21 18:57:44,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:57:44,453 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;@5f71c23f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:57:44,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 18:57:44,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 4 states have (on average 2.25) internal successors, (9), 9 states have internal predecessors, (9), 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) [2023-11-21 18:57:44,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 18:57:44,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:44,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 18:57:44,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 18:57:44,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:44,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1399, now seen corresponding path program 1 times [2023-11-21 18:57:44,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:44,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933813656] [2023-11-21 18:57:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:44,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:57:44,637 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:57:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:57:44,718 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 18:57:44,721 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 18:57:44,723 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2023-11-21 18:57:44,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-11-21 18:57:44,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-11-21 18:57:44,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 5 remaining) [2023-11-21 18:57:44,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2023-11-21 18:57:44,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 18:57:44,736 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 18:57:44,743 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 18:57:44,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 06:57:44 BoogieIcfgContainer [2023-11-21 18:57:44,764 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 18:57:44,767 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:57:44,767 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:57:44,768 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:57:44,768 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:44" (3/4) ... [2023-11-21 18:57:44,770 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 18:57:44,841 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 18:57:44,841 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:57:44,843 INFO L158 Benchmark]: Toolchain (without parser) took 1237.51ms. Allocated memory was 151.0MB in the beginning and 205.5MB in the end (delta: 54.5MB). Free memory was 105.4MB in the beginning and 172.9MB in the end (delta: -67.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:57:44,846 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 151.0MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:57:44,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.10ms. Allocated memory is still 151.0MB. Free memory was 104.9MB in the beginning and 95.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 18:57:44,848 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.78ms. Allocated memory is still 151.0MB. Free memory was 95.3MB in the beginning and 93.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:57:44,849 INFO L158 Benchmark]: Boogie Preprocessor took 26.57ms. Allocated memory is still 151.0MB. Free memory was 93.8MB in the beginning and 92.8MB in the end (delta: 960.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:57:44,851 INFO L158 Benchmark]: RCFGBuilder took 366.03ms. Allocated memory is still 151.0MB. Free memory was 92.8MB in the beginning and 80.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 18:57:44,852 INFO L158 Benchmark]: TraceAbstraction took 404.36ms. Allocated memory was 151.0MB in the beginning and 205.5MB in the end (delta: 54.5MB). Free memory was 79.8MB in the beginning and 175.0MB in the end (delta: -95.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:57:44,857 INFO L158 Benchmark]: Witness Printer took 74.27ms. Allocated memory is still 205.5MB. Free memory was 175.0MB in the beginning and 172.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:57:44,867 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 151.0MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.10ms. Allocated memory is still 151.0MB. Free memory was 104.9MB in the beginning and 95.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.78ms. Allocated memory is still 151.0MB. Free memory was 95.3MB in the beginning and 93.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.57ms. Allocated memory is still 151.0MB. Free memory was 93.8MB in the beginning and 92.8MB in the end (delta: 960.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.03ms. Allocated memory is still 151.0MB. Free memory was 92.8MB in the beginning and 80.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 404.36ms. Allocated memory was 151.0MB in the beginning and 205.5MB in the end (delta: 54.5MB). Free memory was 79.8MB in the beginning and 175.0MB in the end (delta: -95.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 74.27ms. Allocated memory is still 205.5MB. Free memory was 175.0MB in the beginning and 172.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L4] int *myPointerA = ((void*) 0); [L5] int *myPointerB = ((void*) 0); [L8] int myNumberA = 7; [L9] EXPR myPointerA = &myNumberA [L8] int myNumberA = 7; [L7-L11] { int myNumberA = 7; myPointerA = &myNumberA; // scope of myNumber ends here } [L13] int myNumberB = 3; [L14] myPointerB = &myNumberB VAL [myNumberB={2:0}, myPointerA={5:0}, myPointerB={2:0}] [L16] \read(*myPointerA) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 3]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-21 18:57:44,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30534fe1-9b78-4260-80e6-26bf99c29448/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)