./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a0165632 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_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:28:22,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:28:22,273 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2024-11-09 05:28:22,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:28:22,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:28:22,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:28:22,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:28:22,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:28:22,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:28:22,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:28:22,324 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:28:22,325 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:28:22,325 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:28:22,327 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:28:22,327 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:28:22,328 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:28:22,328 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:28:22,328 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:28:22,329 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:28:22,329 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:28:22,333 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:28:22,334 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:28:22,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 05:28:22,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 05:28:22,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:28:22,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:28:22,335 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:28:22,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:28:22,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:28:22,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:28:22,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:28:22,336 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 05:28:22,337 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 05:28:22,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:28:22,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:28:22,339 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:28:22,340 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:28:22,340 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:28:22,340 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:28:22,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:28:22,341 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:28:22,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:28:22,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:28:22,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:28:22,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:28:22,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:28:22,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:28:22,343 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:28:22,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:28:22,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:28:22,343 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:28:22,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:28:22,344 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_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf [2024-11-09 05:28:22,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:28:22,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:28:22,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:28:22,714 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:28:22,715 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:28:22,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i Unable to find full path for "g++" [2024-11-09 05:28:24,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:28:25,223 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:28:25,223 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2024-11-09 05:28:25,239 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/data/aa2939f99/71272afa8de24a78920d532a4d99e160/FLAG932b11d5e [2024-11-09 05:28:25,256 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/data/aa2939f99/71272afa8de24a78920d532a4d99e160 [2024-11-09 05:28:25,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:28:25,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:28:25,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:28:25,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:28:25,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:28:25,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:28:25" (1/1) ... [2024-11-09 05:28:25,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b89500e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:25, skipping insertion in model container [2024-11-09 05:28:25,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:28:25" (1/1) ... [2024-11-09 05:28:25,333 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:28:25,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:28:25,869 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:28:25,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:28:26,022 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:28:26,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26 WrapperNode [2024-11-09 05:28:26,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:28:26,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:28:26,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:28:26,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:28:26,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,112 INFO L138 Inliner]: procedures = 125, calls = 84, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 273 [2024-11-09 05:28:26,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:28:26,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:28:26,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:28:26,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:28:26,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:28:26,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:28:26,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:28:26,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:28:26,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (1/1) ... [2024-11-09 05:28:26,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:28:26,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:26,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:28:26,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:28:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:28:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2024-11-09 05:28:26,270 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2024-11-09 05:28:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-11-09 05:28:26,271 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-11-09 05:28:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:28:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:28:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:28:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:28:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 05:28:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:28:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:28:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:28:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:28:26,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:28:26,479 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:28:26,482 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:28:27,213 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-11-09 05:28:27,213 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:28:27,424 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:28:27,424 INFO L316 CfgBuilder]: Removed 31 assume(true) statements. [2024-11-09 05:28:27,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:28:27 BoogieIcfgContainer [2024-11-09 05:28:27,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:28:27,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:28:27,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:28:27,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:28:27,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:28:25" (1/3) ... [2024-11-09 05:28:27,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b525c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:28:27, skipping insertion in model container [2024-11-09 05:28:27,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:26" (2/3) ... [2024-11-09 05:28:27,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b525c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:28:27, skipping insertion in model container [2024-11-09 05:28:27,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:28:27" (3/3) ... [2024-11-09 05:28:27,442 INFO L112 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2024-11-09 05:28:27,468 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:28:27,468 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 05:28:27,540 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:28:27,549 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@53e54675, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:28:27,550 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 05:28:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 67 states have (on average 1.8805970149253732) internal successors, (126), 84 states have internal predecessors, (126), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 05:28:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 05:28:27,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:27,564 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 05:28:27,565 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-09 05:28:27,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash 13475928, now seen corresponding path program 1 times [2024-11-09 05:28:27,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:27,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228257138] [2024-11-09 05:28:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:27,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:27,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:27,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228257138] [2024-11-09 05:28:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228257138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:27,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:27,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:28:27,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516121707] [2024-11-09 05:28:27,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:27,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:28:27,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:28:27,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:28:27,826 INFO L87 Difference]: Start difference. First operand has 87 states, 67 states have (on average 1.8805970149253732) internal successors, (126), 84 states have internal predecessors, (126), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:27,900 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2024-11-09 05:28:27,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:28:27,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 05:28:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:27,917 INFO L225 Difference]: With dead ends: 85 [2024-11-09 05:28:27,918 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 05:28:27,921 INFO L431 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 [2024-11-09 05:28:27,926 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:27,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:28:27,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 05:28:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-09 05:28:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.378787878787879) internal successors, (91), 81 states have internal predecessors, (91), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 108 transitions. [2024-11-09 05:28:27,976 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 108 transitions. Word has length 4 [2024-11-09 05:28:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:27,976 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 108 transitions. [2024-11-09 05:28:27,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 108 transitions. [2024-11-09 05:28:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:28:27,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:27,978 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:28:27,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:28:27,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-09 05:28:27,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash 417096889, now seen corresponding path program 1 times [2024-11-09 05:28:27,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:27,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062090840] [2024-11-09 05:28:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:27,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:28,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:28,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062090840] [2024-11-09 05:28:28,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062090840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:28,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:28,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:28:28,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60938250] [2024-11-09 05:28:28,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:28,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:28:28,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:28,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:28:28,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:28:28,051 INFO L87 Difference]: Start difference. First operand 84 states and 108 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 05:28:28,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:28,197 INFO L93 Difference]: Finished difference Result 151 states and 195 transitions. [2024-11-09 05:28:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:28:28,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 05:28:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:28,199 INFO L225 Difference]: With dead ends: 151 [2024-11-09 05:28:28,200 INFO L226 Difference]: Without dead ends: 150 [2024-11-09 05:28:28,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:28:28,202 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:28,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 183 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:28,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-09 05:28:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 87. [2024-11-09 05:28:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 84 states have internal predecessors, (95), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:28,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2024-11-09 05:28:28,216 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 5 [2024-11-09 05:28:28,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:28,217 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2024-11-09 05:28:28,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 05:28:28,217 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2024-11-09 05:28:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 05:28:28,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:28,218 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 05:28:28,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:28:28,219 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-09 05:28:28,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:28,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1771087857, now seen corresponding path program 1 times [2024-11-09 05:28:28,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:28,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169918292] [2024-11-09 05:28:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:28,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:28,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:28,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169918292] [2024-11-09 05:28:28,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169918292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:28,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:28,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:28:28,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765984419] [2024-11-09 05:28:28,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:28,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:28:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:28,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:28:28,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:28:28,435 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-09 05:28:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:28,559 INFO L93 Difference]: Finished difference Result 146 states and 186 transitions. [2024-11-09 05:28:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:28:28,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 05:28:28,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:28,562 INFO L225 Difference]: With dead ends: 146 [2024-11-09 05:28:28,562 INFO L226 Difference]: Without dead ends: 146 [2024-11-09 05:28:28,562 INFO L431 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 [2024-11-09 05:28:28,567 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 61 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:28,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 281 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-09 05:28:28,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 84. [2024-11-09 05:28:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 81 states have internal predecessors, (90), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2024-11-09 05:28:28,579 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 7 [2024-11-09 05:28:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:28,579 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2024-11-09 05:28:28,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-09 05:28:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2024-11-09 05:28:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 05:28:28,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:28,581 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:28,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:28:28,581 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-09 05:28:28,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash -937810549, now seen corresponding path program 1 times [2024-11-09 05:28:28,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:28,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565486240] [2024-11-09 05:28:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:28,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:28,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:28,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565486240] [2024-11-09 05:28:28,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565486240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:28,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:28,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:28:28,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203575116] [2024-11-09 05:28:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:28,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:28:28,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:28,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:28:28,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:28:28,646 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2024-11-09 05:28:28,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:28,728 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2024-11-09 05:28:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:28:28,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 [2024-11-09 05:28:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:28,730 INFO L225 Difference]: With dead ends: 87 [2024-11-09 05:28:28,730 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 05:28:28,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:28:28,732 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:28,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:28,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 05:28:28,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-09 05:28:28,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.3529411764705883) internal successors, (92), 83 states have internal predecessors, (92), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 109 transitions. [2024-11-09 05:28:28,742 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 109 transitions. Word has length 9 [2024-11-09 05:28:28,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:28,743 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 109 transitions. [2024-11-09 05:28:28,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2024-11-09 05:28:28,743 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 109 transitions. [2024-11-09 05:28:28,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:28:28,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:28,744 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:28,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:28:28,745 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-09 05:28:28,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:28,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1376390339, now seen corresponding path program 1 times [2024-11-09 05:28:28,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:28,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975882369] [2024-11-09 05:28:28,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:28,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:28,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:28,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975882369] [2024-11-09 05:28:28,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975882369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:28,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:28,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:28:28,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685654355] [2024-11-09 05:28:28,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:28,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:28:28,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:28,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:28:28,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:28:28,938 INFO L87 Difference]: Start difference. First operand 86 states and 109 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-09 05:28:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:29,140 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2024-11-09 05:28:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:28:29,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11 [2024-11-09 05:28:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:29,142 INFO L225 Difference]: With dead ends: 139 [2024-11-09 05:28:29,142 INFO L226 Difference]: Without dead ends: 139 [2024-11-09 05:28:29,143 INFO L431 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 [2024-11-09 05:28:29,144 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 126 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:29,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 217 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:28:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-09 05:28:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2024-11-09 05:28:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 86 states have internal predecessors, (96), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2024-11-09 05:28:29,154 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 11 [2024-11-09 05:28:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:29,155 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2024-11-09 05:28:29,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-09 05:28:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2024-11-09 05:28:29,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 05:28:29,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:29,156 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:29,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:28:29,157 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-09 05:28:29,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash -863987343, now seen corresponding path program 1 times [2024-11-09 05:28:29,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:29,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045094830] [2024-11-09 05:28:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:29,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:29,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:29,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045094830] [2024-11-09 05:28:29,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045094830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:29,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:29,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:28:29,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269226657] [2024-11-09 05:28:29,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:29,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:28:29,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:29,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:28:29,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:28:29,401 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-09 05:28:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:29,621 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2024-11-09 05:28:29,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:28:29,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2024-11-09 05:28:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:29,623 INFO L225 Difference]: With dead ends: 88 [2024-11-09 05:28:29,623 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 05:28:29,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:28:29,624 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 12 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:29,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 292 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:28:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 05:28:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-09 05:28:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 85 states have internal predecessors, (95), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2024-11-09 05:28:29,639 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 18 [2024-11-09 05:28:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:29,639 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2024-11-09 05:28:29,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-09 05:28:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2024-11-09 05:28:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 05:28:29,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:29,644 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:29,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:28:29,645 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-09 05:28:29,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash -56141125, now seen corresponding path program 1 times [2024-11-09 05:28:29,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:29,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382780453] [2024-11-09 05:28:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:29,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:29,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382780453] [2024-11-09 05:28:29,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382780453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:29,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:29,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:28:29,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643222223] [2024-11-09 05:28:29,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:29,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:28:29,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:29,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:28:29,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:28:29,812 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-09 05:28:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:30,009 INFO L93 Difference]: Finished difference Result 87 states and 108 transitions. [2024-11-09 05:28:30,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:28:30,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2024-11-09 05:28:30,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:30,011 INFO L225 Difference]: With dead ends: 87 [2024-11-09 05:28:30,011 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 05:28:30,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:28:30,013 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 12 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:30,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 282 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:28:30,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 05:28:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-09 05:28:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 84 states have internal predecessors, (94), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 108 transitions. [2024-11-09 05:28:30,029 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 108 transitions. Word has length 18 [2024-11-09 05:28:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:30,029 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 108 transitions. [2024-11-09 05:28:30,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-09 05:28:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 108 transitions. [2024-11-09 05:28:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:28:30,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:30,034 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:30,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:28:30,035 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-09 05:28:30,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash -376951201, now seen corresponding path program 1 times [2024-11-09 05:28:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263316760] [2024-11-09 05:28:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:30,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:30,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263316760] [2024-11-09 05:28:30,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263316760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:30,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:30,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:28:30,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368355997] [2024-11-09 05:28:30,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:30,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:28:30,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:30,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:28:30,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:28:30,305 INFO L87 Difference]: Start difference. First operand 87 states and 108 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-09 05:28:30,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:30,545 INFO L93 Difference]: Finished difference Result 134 states and 164 transitions. [2024-11-09 05:28:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:28:30,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 21 [2024-11-09 05:28:30,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:30,549 INFO L225 Difference]: With dead ends: 134 [2024-11-09 05:28:30,549 INFO L226 Difference]: Without dead ends: 134 [2024-11-09 05:28:30,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:28:30,550 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 109 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:30,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 230 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:28:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-09 05:28:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 93. [2024-11-09 05:28:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 90 states have internal predecessors, (100), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 114 transitions. [2024-11-09 05:28:30,567 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 114 transitions. Word has length 21 [2024-11-09 05:28:30,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:30,568 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 114 transitions. [2024-11-09 05:28:30,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-09 05:28:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 114 transitions. [2024-11-09 05:28:30,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:28:30,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:30,569 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:30,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 05:28:30,570 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-09 05:28:30,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:30,570 INFO L85 PathProgramCache]: Analyzing trace with hash -708665346, now seen corresponding path program 1 times [2024-11-09 05:28:30,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:30,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728927102] [2024-11-09 05:28:30,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:30,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:30,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:30,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728927102] [2024-11-09 05:28:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728927102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:30,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:30,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:28:30,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533969796] [2024-11-09 05:28:30,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:30,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:28:30,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:30,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:28:30,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:28:30,741 INFO L87 Difference]: Start difference. First operand 93 states and 114 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-09 05:28:30,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:30,971 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2024-11-09 05:28:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:28:30,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 21 [2024-11-09 05:28:30,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:30,973 INFO L225 Difference]: With dead ends: 133 [2024-11-09 05:28:30,973 INFO L226 Difference]: Without dead ends: 133 [2024-11-09 05:28:30,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:28:30,975 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 107 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:30,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 230 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:28:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-09 05:28:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2024-11-09 05:28:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 96 states have internal predecessors, (106), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2024-11-09 05:28:30,984 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 21 [2024-11-09 05:28:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:30,984 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2024-11-09 05:28:30,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-09 05:28:30,985 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2024-11-09 05:28:30,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 05:28:30,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:30,990 INFO L215 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, 1] [2024-11-09 05:28:30,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 05:28:30,990 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-09 05:28:30,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:30,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1447337566, now seen corresponding path program 1 times [2024-11-09 05:28:30,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:30,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312027650] [2024-11-09 05:28:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:30,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:28:31,032 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:28:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:28:31,078 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:28:31,079 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:28:31,080 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2024-11-09 05:28:31,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2024-11-09 05:28:31,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 05:28:31,087 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:31,113 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:28:31,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:28:31 BoogieIcfgContainer [2024-11-09 05:28:31,128 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:28:31,128 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:28:31,128 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:28:31,130 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:28:31,130 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:28:27" (3/4) ... [2024-11-09 05:28:31,131 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 05:28:31,182 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:28:31,182 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:28:31,183 INFO L158 Benchmark]: Toolchain (without parser) took 5922.19ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 118.8MB in the beginning and 150.1MB in the end (delta: -31.4MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2024-11-09 05:28:31,183 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 148.9MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:28:31,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 761.10ms. Allocated memory is still 148.9MB. Free memory was 118.8MB in the beginning and 98.0MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 05:28:31,184 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.00ms. Allocated memory is still 148.9MB. Free memory was 98.0MB in the beginning and 95.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:28:31,184 INFO L158 Benchmark]: Boogie Preprocessor took 65.85ms. Allocated memory is still 148.9MB. Free memory was 95.1MB in the beginning and 91.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:28:31,184 INFO L158 Benchmark]: RCFGBuilder took 1248.90ms. Allocated memory is still 148.9MB. Free memory was 91.7MB in the beginning and 53.1MB in the end (delta: 38.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-09 05:28:31,185 INFO L158 Benchmark]: TraceAbstraction took 3694.99ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 52.5MB in the beginning and 152.2MB in the end (delta: -99.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2024-11-09 05:28:31,185 INFO L158 Benchmark]: Witness Printer took 54.22ms. Allocated memory is still 186.6MB. Free memory was 152.2MB in the beginning and 150.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:28:31,188 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 148.9MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 761.10ms. Allocated memory is still 148.9MB. Free memory was 118.8MB in the beginning and 98.0MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.00ms. Allocated memory is still 148.9MB. Free memory was 98.0MB in the beginning and 95.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.85ms. Allocated memory is still 148.9MB. Free memory was 95.1MB in the beginning and 91.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1248.90ms. Allocated memory is still 148.9MB. Free memory was 91.7MB in the beginning and 53.1MB in the end (delta: 38.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3694.99ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 52.5MB in the beginning and 152.2MB in the end (delta: -99.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Witness Printer took 54.22ms. Allocated memory is still 186.6MB. Free memory was 152.2MB in the beginning and 150.1MB 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: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L638] struct list *data = ((void *)0); VAL [data={0:0}] [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = node [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L654] CALL inspect_before(data) [L615] COND FALSE !(!(shape)) VAL [shape={-3:0}] [L616] shape->next VAL [shape={-3:0}] [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) VAL [shape={-3:0}] [L623] EXPR shape->next VAL [shape={-3:0}] [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist VAL [shape={-3:0}] [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist [L625] EXPR shape->slist->next VAL [shape={-3:0}] [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L625] CALL fail() [L565] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "merge_sort-1.c", 3, __extension__ __PRETTY_FUNCTION__) - UnprovableResult [Line: 636]: 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 3 procedures, 87 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 495 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 495 mSDsluCounter, 2011 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1138 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 629 IncrementalHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 873 mSDtfsCounter, 629 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=9, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 250 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 504 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 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! [2024-11-09 05:28:31,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ba4f9-45d8-4add-901e-f5fd3a7c108b/bin/utaipan-verify-YMUCfTKeje/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)