./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b55b51cb0b3b4f908f36b1c6f95a18eadc174b8702aa08ef4d6f9775df6bb52 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:57,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:58,022 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-19 07:59:58,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:58,029 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:58,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:58,057 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:58,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:58,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:58,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:58,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:58,061 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:58,062 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:58,062 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:58,063 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:58,064 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:58,064 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:58,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:58,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:58,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:58,067 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:59:58,068 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:59:58,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:58,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:58,070 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:59:58,070 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:59:58,071 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:58,071 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:58,072 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:58,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:58,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:58,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:58,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:58,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:58,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:58,076 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:58,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:58,077 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:58,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:58,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:58,079 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:58,079 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b55b51cb0b3b4f908f36b1c6f95a18eadc174b8702aa08ef4d6f9775df6bb52 [2023-11-19 07:59:58,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:58,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:58,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:58,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:58,387 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:58,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/forester-heap/dll-sorted-1.i [2023-11-19 08:00:01,622 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:01,902 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:01,902 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2023-11-19 08:00:01,920 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/data/16f0f659c/886271c9c1b3405086404dd575b2f7e5/FLAG489c3caf0 [2023-11-19 08:00:01,935 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/data/16f0f659c/886271c9c1b3405086404dd575b2f7e5 [2023-11-19 08:00:01,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:01,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:01,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:01,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:01,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:01,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:01" (1/1) ... [2023-11-19 08:00:01,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfcfea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:01, skipping insertion in model container [2023-11-19 08:00:01,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:01" (1/1) ... [2023-11-19 08:00:02,006 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:02,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:02,341 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:02,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:02,422 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:02,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02 WrapperNode [2023-11-19 08:00:02,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:02,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:02,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:02,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:02,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,475 INFO L138 Inliner]: procedures = 119, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 196 [2023-11-19 08:00:02,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:02,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:02,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:02,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:02,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,508 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:02,514 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:02,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:02,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:02,516 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:02,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:02,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:02,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 08:00:02,618 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 08:00:02,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:00:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:00:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:00:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:00:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:00:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:02,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:02,775 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:02,789 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:03,124 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:03,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:03,132 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-19 08:00:03,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:03 BoogieIcfgContainer [2023-11-19 08:00:03,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:03,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:03,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:03,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:03,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:01" (1/3) ... [2023-11-19 08:00:03,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5cb4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:03, skipping insertion in model container [2023-11-19 08:00:03,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02" (2/3) ... [2023-11-19 08:00:03,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5cb4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:03, skipping insertion in model container [2023-11-19 08:00:03,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:03" (3/3) ... [2023-11-19 08:00:03,146 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2023-11-19 08:00:03,165 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:03,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:00:03,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:03,218 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=PETRI_NET, 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;@4749423a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:03,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 08:00:03,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 52 states have (on average 1.75) internal successors, (91), 54 states have internal predecessors, (91), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:00:03,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 08:00:03,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:03,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:03,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 08:00:03,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:03,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1091719506, now seen corresponding path program 1 times [2023-11-19 08:00:03,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:03,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482402461] [2023-11-19 08:00:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:03,411 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 08:00:03,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:03,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482402461] [2023-11-19 08:00:03,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482402461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:03,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:03,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:03,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048764351] [2023-11-19 08:00:03,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:03,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:03,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:03,451 INFO L87 Difference]: Start difference. First operand has 62 states, 52 states have (on average 1.75) internal successors, (91), 54 states have internal predecessors, (91), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:03,471 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2023-11-19 08:00:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:03,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 08:00:03,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:03,480 INFO L225 Difference]: With dead ends: 54 [2023-11-19 08:00:03,480 INFO L226 Difference]: Without dead ends: 52 [2023-11-19 08:00:03,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:03,485 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:03,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:03,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-19 08:00:03,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-19 08:00:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 50 states have internal predecessors, (62), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2023-11-19 08:00:03,519 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 8 [2023-11-19 08:00:03,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:03,520 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2023-11-19 08:00:03,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2023-11-19 08:00:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 08:00:03,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:03,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:03,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:03,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 08:00:03,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:03,522 INFO L85 PathProgramCache]: Analyzing trace with hash 307138536, now seen corresponding path program 1 times [2023-11-19 08:00:03,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:03,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769993920] [2023-11-19 08:00:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:03,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:03,647 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 08:00:03,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:03,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769993920] [2023-11-19 08:00:03,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769993920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:03,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:03,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:03,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358790725] [2023-11-19 08:00:03,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:03,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:03,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:03,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:03,651 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:03,710 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2023-11-19 08:00:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:03,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 08:00:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:03,711 INFO L225 Difference]: With dead ends: 62 [2023-11-19 08:00:03,712 INFO L226 Difference]: Without dead ends: 62 [2023-11-19 08:00:03,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 08:00:03,714 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 31 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:03,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 98 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-19 08:00:03,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2023-11-19 08:00:03,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 54 states have internal predecessors, (67), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2023-11-19 08:00:03,723 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 9 [2023-11-19 08:00:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:03,723 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2023-11-19 08:00:03,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:03,725 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2023-11-19 08:00:03,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 08:00:03,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:03,725 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:03,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:00:03,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 08:00:03,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:03,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1965721405, now seen corresponding path program 1 times [2023-11-19 08:00:03,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:03,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001161458] [2023-11-19 08:00:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:03,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:03,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:03,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001161458] [2023-11-19 08:00:03,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001161458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:03,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:03,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:03,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020209359] [2023-11-19 08:00:03,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:03,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:03,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:03,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:03,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:03,985 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:04,142 INFO L93 Difference]: Finished difference Result 89 states and 116 transitions. [2023-11-19 08:00:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:04,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 08:00:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:04,144 INFO L225 Difference]: With dead ends: 89 [2023-11-19 08:00:04,144 INFO L226 Difference]: Without dead ends: 89 [2023-11-19 08:00:04,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:04,147 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 127 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:04,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 85 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-19 08:00:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 60. [2023-11-19 08:00:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 58 states have internal predecessors, (73), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2023-11-19 08:00:04,162 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 13 [2023-11-19 08:00:04,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:04,165 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2023-11-19 08:00:04,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,166 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2023-11-19 08:00:04,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 08:00:04,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:04,167 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:04,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:00:04,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 08:00:04,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1594210977, now seen corresponding path program 1 times [2023-11-19 08:00:04,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:04,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309304500] [2023-11-19 08:00:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:04,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:04,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:04,330 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:00:04,331 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2023-11-19 08:00:04,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2023-11-19 08:00:04,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:04,338 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 08:00:04,343 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:00:04,365 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short10 could not be translated [2023-11-19 08:00:04,366 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem7 [2023-11-19 08:00:04,366 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated [2023-11-19 08:00:04,367 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem8 [2023-11-19 08:00:04,367 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated [2023-11-19 08:00:04,367 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem12 [2023-11-19 08:00:04,367 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-19 08:00:04,368 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-19 08:00:04,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:00:04 BoogieIcfgContainer [2023-11-19 08:00:04,388 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:00:04,389 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:00:04,389 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:00:04,389 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:00:04,390 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:03" (3/4) ... [2023-11-19 08:00:04,391 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 08:00:04,431 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short10 could not be translated [2023-11-19 08:00:04,431 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem7 [2023-11-19 08:00:04,431 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem8 [2023-11-19 08:00:04,432 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated [2023-11-19 08:00:04,432 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated [2023-11-19 08:00:04,432 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-19 08:00:04,432 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem12 [2023-11-19 08:00:04,433 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-19 08:00:04,503 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:00:04,503 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:00:04,503 INFO L158 Benchmark]: Toolchain (without parser) took 2564.17ms. Allocated memory is still 172.0MB. Free memory was 124.3MB in the beginning and 138.5MB in the end (delta: -14.3MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. [2023-11-19 08:00:04,504 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:00:04,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.71ms. Allocated memory is still 172.0MB. Free memory was 123.8MB in the beginning and 105.9MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 08:00:04,504 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.51ms. Allocated memory is still 172.0MB. Free memory was 105.9MB in the beginning and 103.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:00:04,505 INFO L158 Benchmark]: Boogie Preprocessor took 37.36ms. Allocated memory is still 172.0MB. Free memory was 103.3MB in the beginning and 101.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:00:04,505 INFO L158 Benchmark]: RCFGBuilder took 622.12ms. Allocated memory is still 172.0MB. Free memory was 101.2MB in the beginning and 127.8MB in the end (delta: -26.5MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2023-11-19 08:00:04,505 INFO L158 Benchmark]: TraceAbstraction took 1248.99ms. Allocated memory is still 172.0MB. Free memory was 126.7MB in the beginning and 61.7MB in the end (delta: 65.0MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2023-11-19 08:00:04,506 INFO L158 Benchmark]: Witness Printer took 114.07ms. Allocated memory is still 172.0MB. Free memory was 61.7MB in the beginning and 138.5MB in the end (delta: -76.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:00:04,509 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.71ms. Allocated memory is still 172.0MB. Free memory was 123.8MB in the beginning and 105.9MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.51ms. Allocated memory is still 172.0MB. Free memory was 105.9MB in the beginning and 103.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.36ms. Allocated memory is still 172.0MB. Free memory was 103.3MB in the beginning and 101.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 622.12ms. Allocated memory is still 172.0MB. Free memory was 101.2MB in the beginning and 127.8MB in the end (delta: -26.5MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1248.99ms. Allocated memory is still 172.0MB. Free memory was 126.7MB in the beginning and 61.7MB in the end (delta: 65.0MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * Witness Printer took 114.07ms. Allocated memory is still 172.0MB. Free memory was 61.7MB in the beginning and 138.5MB in the end (delta: -76.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem7 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem12 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem7 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem12 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 985]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; VAL [head={-1:0}, marked=0, x={-1:0}] [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 VAL [head={-1:0}, marked=1, x={-2:0}] [L1019] COND TRUE \read(marked) [L1020] x->data = 1 VAL [head={-1:0}, marked=1, x={-2:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head VAL [head={-1:0}, marked=1, x={-1:0}] [L1027] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, marked=1, x={-1:0}] [L1028] marked = 0 VAL [head={-1:0}, marked=0, x={-1:0}] [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, marked=0, x={-1:0}] [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [head={-1:0}, marked=0, x={-1:0}] [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data VAL [head={-1:0}, marked=0, x={-2:0}] [L1038] COND TRUE !(x->data != 1) [L1038] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-sorted-1.c", 16, __extension__ __PRETTY_FUNCTION__) - UnprovableResult [Line: 994]: 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 2 procedures, 62 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 158 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 253 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 179 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 3 MinimizatonAttempts, 35 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 55 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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! [2023-11-19 08:00:04,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322af0ad-3155-4bfc-b7e5-d54eb944a524/bin/uautomizer-verify-uCwYo4JHxu/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-memcleanup)