./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version cf1a7837 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_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX --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 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:58:51,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:58:51,667 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-12 00:58:51,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:58:51,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:58:51,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:58:51,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:58:51,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:58:51,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:58:51,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:58:51,724 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:58:51,726 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:58:51,726 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:58:51,728 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:58:51,729 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:58:51,729 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:58:51,729 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:58:51,730 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:58:51,730 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:58:51,731 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:58:51,731 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:58:51,732 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:58:51,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:58:51,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:58:51,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:58:51,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:58:51,734 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:58:51,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:58:51,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:58:51,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:58:51,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:58:51,737 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:58:51,738 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:58:51,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:58:51,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:58:51,738 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:58:51,739 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:58:51,739 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:58:51,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:58:51,739 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:58:51,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:58:51,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:58:51,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:51,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:58:51,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:58:51,741 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:58:51,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:58:51,742 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:58:51,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:58:51,742 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_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2023-11-12 00:58:52,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:58:52,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:58:52,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:58:52,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:58:52,104 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:58:52,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2023-11-12 00:58:55,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:58:55,401 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:58:55,402 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2023-11-12 00:58:55,419 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/data/5304f792d/510d06117288400b93437917442df9cb/FLAG14d85ccbf [2023-11-12 00:58:55,434 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/data/5304f792d/510d06117288400b93437917442df9cb [2023-11-12 00:58:55,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:58:55,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:58:55,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:55,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:58:55,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:58:55,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:55" (1/1) ... [2023-11-12 00:58:55,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6481bac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:55, skipping insertion in model container [2023-11-12 00:58:55,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:55" (1/1) ... [2023-11-12 00:58:55,518 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:58:55,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:55,889 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:58:55,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:56,020 WARN L672 CHandler]: The function insert_fnc is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:56,028 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:58:56,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56 WrapperNode [2023-11-12 00:58:56,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:56,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:56,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:58:56,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:58:56,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,086 INFO L138 Inliner]: procedures = 140, calls = 95, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 236 [2023-11-12 00:58:56,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:56,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:58:56,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:58:56,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:58:56,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,102 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,127 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:58:56,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:58:56,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:58:56,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:58:56,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (1/1) ... [2023-11-12 00:58:56,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:56,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:56,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:58:56,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:58:56,213 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-11-12 00:58:56,214 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-11-12 00:58:56,214 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-11-12 00:58:56,214 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-11-12 00:58:56,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:58:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:58:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-11-12 00:58:56,215 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-11-12 00:58:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:58:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:58:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:58:56,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:58:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:58:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:58:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:58:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-11-12 00:58:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-11-12 00:58:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-11-12 00:58:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-11-12 00:58:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:58:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:58:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:58:56,365 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:58:56,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:58:56,811 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:58:56,962 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:58:56,962 INFO L302 CfgBuilder]: Removed 38 assume(true) statements. [2023-11-12 00:58:56,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:56 BoogieIcfgContainer [2023-11-12 00:58:56,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:58:56,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:58:56,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:58:56,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:58:56,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:58:55" (1/3) ... [2023-11-12 00:58:56,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d862228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:56, skipping insertion in model container [2023-11-12 00:58:56,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:56" (2/3) ... [2023-11-12 00:58:56,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d862228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:56, skipping insertion in model container [2023-11-12 00:58:56,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:56" (3/3) ... [2023-11-12 00:58:56,975 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2023-11-12 00:58:56,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:58:56,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:58:57,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:58:57,050 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@180ff80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:58:57,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:58:57,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 73 states have (on average 1.7808219178082192) internal successors, (130), 94 states have internal predecessors, (130), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-12 00:58:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-12 00:58:57,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:57,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:57,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 00:58:57,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash 746530738, now seen corresponding path program 1 times [2023-11-12 00:58:57,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:57,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914671316] [2023-11-12 00:58:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:57,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:58:57,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:57,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914671316] [2023-11-12 00:58:57,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914671316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:57,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:57,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:58:57,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428542957] [2023-11-12 00:58:57,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:57,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:58:57,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:57,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:58:57,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:58:57,510 INFO L87 Difference]: Start difference. First operand has 106 states, 73 states have (on average 1.7808219178082192) internal successors, (130), 94 states have internal predecessors, (130), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 00:58:57,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:57,594 INFO L93 Difference]: Finished difference Result 104 states and 132 transitions. [2023-11-12 00:58:57,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:58:57,597 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-11-12 00:58:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:57,608 INFO L225 Difference]: With dead ends: 104 [2023-11-12 00:58:57,609 INFO L226 Difference]: Without dead ends: 103 [2023-11-12 00:58:57,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:58:57,617 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:57,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:58:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-12 00:58:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-12 00:58:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 91 states have internal predecessors, (97), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:58:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 131 transitions. [2023-11-12 00:58:57,680 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 131 transitions. Word has length 24 [2023-11-12 00:58:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:57,682 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 131 transitions. [2023-11-12 00:58:57,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 00:58:57,682 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2023-11-12 00:58:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-12 00:58:57,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:57,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:57,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:58:57,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 00:58:57,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:57,688 INFO L85 PathProgramCache]: Analyzing trace with hash -525690208, now seen corresponding path program 1 times [2023-11-12 00:58:57,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:57,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284600793] [2023-11-12 00:58:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:57,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:58:58,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:58,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284600793] [2023-11-12 00:58:58,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284600793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:58,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:58,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 00:58:58,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396493605] [2023-11-12 00:58:58,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:58,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:58:58,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:58,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:58:58,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:58:58,435 INFO L87 Difference]: Start difference. First operand 103 states and 131 transitions. Second operand has 10 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 00:58:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:59,060 INFO L93 Difference]: Finished difference Result 170 states and 221 transitions. [2023-11-12 00:58:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:58:59,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-12 00:58:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:59,064 INFO L225 Difference]: With dead ends: 170 [2023-11-12 00:58:59,064 INFO L226 Difference]: Without dead ends: 170 [2023-11-12 00:58:59,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:58:59,066 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 71 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:59,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 906 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:58:59,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-12 00:58:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 134. [2023-11-12 00:58:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 117 states have internal predecessors, (131), 25 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (16), 12 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-12 00:58:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2023-11-12 00:58:59,084 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 25 [2023-11-12 00:58:59,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:59,085 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2023-11-12 00:58:59,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 00:58:59,086 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2023-11-12 00:58:59,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 00:58:59,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:59,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:59,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:58:59,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 00:58:59,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:59,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1716813466, now seen corresponding path program 1 times [2023-11-12 00:58:59,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:59,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641663771] [2023-11-12 00:58:59,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:59,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:58:59,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:59,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641663771] [2023-11-12 00:58:59,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641663771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:58:59,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337350285] [2023-11-12 00:58:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:59,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:59,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:59,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:58:59,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ce82c3-a9d8-4e82-aa87-b2f564cc9aeb/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:58:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:59,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 00:58:59,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:58:59,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:58:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:58:59,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337350285] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:58:59,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [453094659] [2023-11-12 00:58:59,863 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-12 00:58:59,864 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:58:59,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:58:59,875 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:58:59,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:59:02,082 INFO L197 IcfgInterpreter]: Interpreting procedure dll_create_generic with input of size 44 for LOIs [2023-11-12 00:59:02,396 INFO L197 IcfgInterpreter]: Interpreting procedure inspect_base with input of size 189 for LOIs [2023-11-12 00:59:04,687 INFO L197 IcfgInterpreter]: Interpreting procedure ##fun~$Pointer$~TO~VOID with input of size 70 for LOIs [2023-11-12 00:59:04,707 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 202 for LOIs [2023-11-12 00:59:06,363 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:59:24,220 WARN L876 $PredicateComparison]: unable to prove that (and (let ((.cse0 (exists ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| (Array Int Int))) (and (= (select |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| 1) 1) (= (select |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| 2) 1) (= (select |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| 0) 0))))) (or (and (exists ((|v_#length_BEFORE_CALL_10| (Array Int Int))) (and (= 2 (select |v_#length_BEFORE_CALL_10| 1)) (= (select |v_#length_BEFORE_CALL_10| 2) 15))) .cse0 (exists ((|v_#memory_int_BEFORE_CALL_10| (Array Int (Array Int Int)))) (let ((.cse1 (select |v_#memory_int_BEFORE_CALL_10| 1))) (and (= (select .cse1 1) 0) (= (select .cse1 0) 48)))) (exists ((|v_dll_create_generic_~#dll~0.base_18| Int) (v_dll_create_generic_~insert_fnc.offset_BEFORE_RETURN_1 Int) (|v_#valid_73| (Array Int Int)) (v_dll_create_generic_~insert_fnc.base_BEFORE_RETURN_1 Int)) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |v_dll_create_generic_~#dll~0.base_18|) 0))) (and (= |c_#valid| (store |v_#valid_73| |v_dll_create_generic_~#dll~0.base_18| 0)) (= |c_inspect_base_#in~dll.base| .cse2) (let ((.cse3 (exists ((|v_#valid_72| (Array Int Int))) (and (= (select |v_#valid_72| .cse2) 0) (= (store |v_#valid_72| .cse2 1) |v_#valid_73|)))) (.cse4 (not (= .cse2 0))) (.cse5 (<= (+ .cse2 1) |c_#StackHeapBarrier|)) (.cse6 (exists ((|v_#memory_$Pointer$.offset_115| (Array Int (Array Int Int))) (|v_#memory_int_206| (Array Int (Array Int Int))) (|v_#memory_int_121| (Array Int (Array Int Int))) (|v_#memory_int_122| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_115| (Array Int (Array Int Int))) (|v_#memory_int_123| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_155| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_155| (Array Int (Array Int Int))) (|v_#memory_int_120| (Array Int (Array Int Int)))) (let ((.cse8 (select |v_#memory_int_121| .cse2)) (.cse9 (select |v_#memory_int_122| .cse2))) (and (= |c_#memory_int| (store |v_#memory_int_123| |v_dll_create_generic_~#dll~0.base_18| (store (select |v_#memory_int_123| |v_dll_create_generic_~#dll~0.base_18|) 0 (select (select |c_#memory_int| |v_dll_create_generic_~#dll~0.base_18|) 0)))) (= (store |v_#memory_int_206| .cse2 (store (select |v_#memory_int_206| .cse2) 0 (select .cse8 0))) |v_#memory_int_121|) (= (store |v_#memory_int_122| .cse2 (store .cse9 0 (select (select |v_#memory_int_120| .cse2) 0))) |v_#memory_int_120|) (let ((.cse18 (select |v_#memory_$Pointer$.base_155| .cse2)) (.cse15 (select |v_#memory_$Pointer$.offset_155| .cse2))) (let ((.cse19 (store |v_#memory_$Pointer$.offset_155| .cse2 (store .cse15 0 0))) (.cse20 (store |v_#memory_$Pointer$.base_155| .cse2 (store .cse18 0 0)))) (let ((.cse10 (select (select .cse20 |v_dll_create_generic_~#dll~0.base_18|) 0)) (.cse16 (select (select .cse19 |v_dll_create_generic_~#dll~0.base_18|) 0))) (let ((.cse13 (= .cse16 0)) (.cse12 (= .cse10 0))) (or (let ((.cse11 (+ .cse16 4))) (and (= (store |v_#memory_int_120| .cse10 (store (select |v_#memory_int_120| .cse10) .cse11 (select (select |v_#memory_int_123| .cse10) .cse11))) |v_#memory_int_123|) (or (not .cse12) (not .cse13)) (= (let ((.cse14 (store |v_#memory_$Pointer$.offset_155| .cse2 (store .cse15 0 .cse16)))) (store .cse14 .cse10 (store (select .cse14 .cse10) .cse11 0))) |v_#memory_$Pointer$.offset_115|) (= |v_#memory_$Pointer$.base_115| (let ((.cse17 (store |v_#memory_$Pointer$.base_155| .cse2 (store .cse18 0 .cse10)))) (store .cse17 .cse10 (store (select .cse17 .cse10) .cse11 .cse2)))))) (and .cse13 (= |v_#memory_$Pointer$.offset_115| .cse19) (= .cse20 |v_#memory_$Pointer$.base_115|) (= |v_#memory_int_120| |v_#memory_int_123|) .cse12)))))) (= (store |v_#memory_int_121| .cse2 (store .cse8 0 (select .cse9 0))) |v_#memory_int_122|) (= (store |v_#memory_$Pointer$.offset_115| |v_dll_create_generic_~#dll~0.base_18| (store (select |v_#memory_$Pointer$.offset_115| |v_dll_create_generic_~#dll~0.base_18|) 0 0)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_115| |v_dll_create_generic_~#dll~0.base_18| (store (select |v_#memory_$Pointer$.base_115| |v_dll_create_generic_~#dll~0.base_18|) 0 .cse2))))))) (.cse7 (exists ((|v_#length_55| (Array Int Int))) (= (store |v_#length_55| .cse2 8) |c_#length|)))) (or (and .cse3 .cse4 .cse5 .cse6 (not (= v_dll_create_generic_~insert_fnc.base_BEFORE_RETURN_1 |#funAddr~dll_insert_master.base|)) .cse7) (and .cse3 (not (= |#funAddr~dll_insert_master.offset| v_dll_create_generic_~insert_fnc.offset_BEFORE_RETURN_1)) .cse4 .cse5 .cse6 .cse7))) (= (select (select |c_#memory_$Pointer$.offset| |v_dll_create_generic_~#dll~0.base_18|) 0) |c_inspect_base_#in~dll.offset|))))) (and (exists ((|v_dll_create_generic_~#dll~0.base_18| Int) (v_dll_create_generic_~insert_fnc.offset_BEFORE_RETURN_2 Int) (|v_#valid_73| (Array Int Int)) (v_dll_create_generic_~insert_fnc.base_BEFORE_RETURN_2 Int)) (let ((.cse21 (select (select |c_#memory_$Pointer$.base| |v_dll_create_generic_~#dll~0.base_18|) 0))) (and (= |c_#valid| (store |v_#valid_73| |v_dll_create_generic_~#dll~0.base_18| 0)) (= |c_inspect_base_#in~dll.base| .cse21) (= (select (select |c_#memory_$Pointer$.offset| |v_dll_create_generic_~#dll~0.base_18|) 0) |c_inspect_base_#in~dll.offset|) (let ((.cse22 (exists ((|v_#valid_72| (Array Int Int))) (and (= (select |v_#valid_72| .cse21) 0) (= (store |v_#valid_72| .cse21 1) |v_#valid_73|)))) (.cse23 (not (= .cse21 0))) (.cse24 (<= (+ .cse21 1) |c_#StackHeapBarrier|)) (.cse25 (exists ((|v_#memory_$Pointer$.offset_115| (Array Int (Array Int Int))) (|v_#memory_int_206| (Array Int (Array Int Int))) (|v_#memory_int_121| (Array Int (Array Int Int))) (|v_#memory_int_122| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_115| (Array Int (Array Int Int))) (|v_#memory_int_123| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_155| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_155| (Array Int (Array Int Int))) (|v_#memory_int_120| (Array Int (Array Int Int)))) (let ((.cse27 (select |v_#memory_int_121| .cse21)) (.cse28 (select |v_#memory_int_122| .cse21))) (and (= |c_#memory_int| (store |v_#memory_int_123| |v_dll_create_generic_~#dll~0.base_18| (store (select |v_#memory_int_123| |v_dll_create_generic_~#dll~0.base_18|) 0 (select (select |c_#memory_int| |v_dll_create_generic_~#dll~0.base_18|) 0)))) (= (store |v_#memory_int_206| .cse21 (store (select |v_#memory_int_206| .cse21) 0 (select .cse27 0))) |v_#memory_int_121|) (= (store |v_#memory_int_122| .cse21 (store .cse28 0 (select (select |v_#memory_int_120| .cse21) 0))) |v_#memory_int_120|) (let ((.cse37 (select |v_#memory_$Pointer$.base_155| .cse21)) (.cse34 (select |v_#memory_$Pointer$.offset_155| .cse21))) (let ((.cse38 (store |v_#memory_$Pointer$.offset_155| .cse21 (store .cse34 0 0))) (.cse39 (store |v_#memory_$Pointer$.base_155| .cse21 (store .cse37 0 0)))) (let ((.cse29 (select (select .cse39 |v_dll_create_generic_~#dll~0.base_18|) 0)) (.cse35 (select (select .cse38 |v_dll_create_generic_~#dll~0.base_18|) 0))) (let ((.cse32 (= .cse35 0)) (.cse31 (= .cse29 0))) (or (let ((.cse30 (+ .cse35 4))) (and (= (store |v_#memory_int_120| .cse29 (store (select |v_#memory_int_120| .cse29) .cse30 (select (select |v_#memory_int_123| .cse29) .cse30))) |v_#memory_int_123|) (or (not .cse31) (not .cse32)) (= (let ((.cse33 (store |v_#memory_$Pointer$.offset_155| .cse21 (store .cse34 0 .cse35)))) (store .cse33 .cse29 (store (select .cse33 .cse29) .cse30 0))) |v_#memory_$Pointer$.offset_115|) (= |v_#memory_$Pointer$.base_115| (let ((.cse36 (store |v_#memory_$Pointer$.base_155| .cse21 (store .cse37 0 .cse29)))) (store .cse36 .cse29 (store (select .cse36 .cse29) .cse30 .cse21)))))) (and .cse32 (= |v_#memory_$Pointer$.offset_115| .cse38) (= .cse39 |v_#memory_$Pointer$.base_115|) (= |v_#memory_int_120| |v_#memory_int_123|) .cse31)))))) (= (store |v_#memory_int_121| .cse21 (store .cse27 0 (select .cse28 0))) |v_#memory_int_122|) (= (store |v_#memory_$Pointer$.offset_115| |v_dll_create_generic_~#dll~0.base_18| (store (select |v_#memory_$Pointer$.offset_115| |v_dll_create_generic_~#dll~0.base_18|) 0 0)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_115| |v_dll_create_generic_~#dll~0.base_18| (store (select |v_#memory_$Pointer$.base_115| |v_dll_create_generic_~#dll~0.base_18|) 0 .cse21))))))) (.cse26 (exists ((|v_#length_55| (Array Int Int))) (= (store |v_#length_55| .cse21 8) |c_#length|)))) (or (and .cse22 .cse23 .cse24 (not (= |#funAddr~dll_insert_master.offset| v_dll_create_generic_~insert_fnc.offset_BEFORE_RETURN_2)) .cse25 .cse26) (and .cse22 .cse23 .cse24 .cse25 .cse26 (not (= v_dll_create_generic_~insert_fnc.base_BEFORE_RETURN_2 |#funAddr~dll_insert_master.base|)))))))) (exists ((|v_#length_BEFORE_CALL_12| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_12| 1) 2) (= 15 (select |v_#length_BEFORE_CALL_12| 2)))) (exists ((|v_#memory_int_BEFORE_CALL_12| (Array Int (Array Int Int)))) (let ((.cse40 (select |v_#memory_int_BEFORE_CALL_12| 1))) (and (= (select .cse40 0) 48) (= (select .cse40 1) 0)))) .cse0))) (<= 1 |c_#StackHeapBarrier|)) is different from true