./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/05-lval_ls_04-fld_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/05-lval_ls_04-fld_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5a0c3d921e4198a2449efd49bc5373a4e6a5b0854f91282d4ef920b48af7e3c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:12:47,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:12:47,974 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:12:47,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:12:47,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:12:48,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:12:48,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:12:48,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:12:48,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:12:48,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:12:48,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:12:48,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:12:48,030 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:12:48,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:12:48,032 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:12:48,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:12:48,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:12:48,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:12:48,033 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:12:48,034 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:12:48,034 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:12:48,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:12:48,035 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:12:48,035 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:12:48,036 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:12:48,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:12:48,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:12:48,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:12:48,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:12:48,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:12:48,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:48,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:12:48,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:12:48,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:12:48,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:12:48,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:12:48,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:12:48,041 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:12:48,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:12:48,041 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5a0c3d921e4198a2449efd49bc5373a4e6a5b0854f91282d4ef920b48af7e3c [2023-11-21 22:12:48,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:12:48,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:12:48,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:12:48,379 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:12:48,379 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:12:48,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/05-lval_ls_04-fld_nr.i [2023-11-21 22:12:51,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:12:51,875 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:12:51,875 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/sv-benchmarks/c/goblint-regression/05-lval_ls_04-fld_nr.i [2023-11-21 22:12:51,902 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/data/006898973/61097f6e57414b96972e48bf51e14050/FLAGa384e7a1a [2023-11-21 22:12:51,921 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/data/006898973/61097f6e57414b96972e48bf51e14050 [2023-11-21 22:12:51,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:12:51,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:12:51,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:51,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:12:51,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:12:51,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:51" (1/1) ... [2023-11-21 22:12:51,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3edbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:51, skipping insertion in model container [2023-11-21 22:12:51,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:51" (1/1) ... [2023-11-21 22:12:51,982 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:12:52,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:52,455 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:12:52,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:52,589 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:12:52,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52 WrapperNode [2023-11-21 22:12:52,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:52,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:12:52,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:12:52,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:12:52,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,665 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-11-21 22:12:52,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:12:52,667 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:12:52,667 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:12:52,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:12:52,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,688 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:12:52,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:12:52,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:12:52,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:12:52,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (1/1) ... [2023-11-21 22:12:52,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:52,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:52,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:12:52,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:12:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:12:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 22:12:52,827 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 22:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:12:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:12:52,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:12:52,829 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:12:52,971 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:12:52,973 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:12:53,124 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:12:53,279 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:12:53,279 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:12:53,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:53 BoogieIcfgContainer [2023-11-21 22:12:53,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:12:53,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:12:53,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:12:53,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:12:53,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:12:51" (1/3) ... [2023-11-21 22:12:53,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0315d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:12:53, skipping insertion in model container [2023-11-21 22:12:53,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:52" (2/3) ... [2023-11-21 22:12:53,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0315d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:12:53, skipping insertion in model container [2023-11-21 22:12:53,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:53" (3/3) ... [2023-11-21 22:12:53,298 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_04-fld_nr.i [2023-11-21 22:12:53,313 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:12:53,313 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-21 22:12:53,314 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:12:53,357 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:12:53,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 18 transitions, 40 flow [2023-11-21 22:12:53,420 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-21 22:12:53,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:12:53,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-21 22:12:53,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 18 transitions, 40 flow [2023-11-21 22:12:53,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 16 transitions, 35 flow [2023-11-21 22:12:53,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:12:53,449 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ad11362, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:12:53,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-21 22:12:53,456 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:12:53,456 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:12:53,456 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:12:53,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:53,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:12:53,457 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2023-11-21 22:12:53,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash 4889, now seen corresponding path program 1 times [2023-11-21 22:12:53,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:53,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762902809] [2023-11-21 22:12:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:53,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:53,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:53,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762902809] [2023-11-21 22:12:53,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762902809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:53,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:53,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:12:53,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737370204] [2023-11-21 22:12:53,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:53,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:53,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 18 [2023-11-21 22:12:53,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:53,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:53,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 18 [2023-11-21 22:12:53,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:53,979 INFO L124 PetriNetUnfolderBase]: 20/59 cut-off events. [2023-11-21 22:12:53,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:12:53,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 59 events. 20/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 16 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 104. Up to 43 conditions per place. [2023-11-21 22:12:53,983 INFO L140 encePairwiseOnDemand]: 15/18 looper letters, 14 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-11-21 22:12:53,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 73 flow [2023-11-21 22:12:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2023-11-21 22:12:54,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2023-11-21 22:12:54,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 29 transitions. [2023-11-21 22:12:54,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 29 transitions. [2023-11-21 22:12:54,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:54,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 29 transitions. [2023-11-21 22:12:54,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,016 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 35 flow. Second operand 3 states and 29 transitions. [2023-11-21 22:12:54,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 73 flow [2023-11-21 22:12:54,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 72 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:12:54,023 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 36 flow [2023-11-21 22:12:54,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-11-21 22:12:54,029 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2023-11-21 22:12:54,030 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 36 flow [2023-11-21 22:12:54,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:54,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:12:54,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:12:54,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2023-11-21 22:12:54,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:54,036 INFO L85 PathProgramCache]: Analyzing trace with hash 4890, now seen corresponding path program 1 times [2023-11-21 22:12:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:54,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252917963] [2023-11-21 22:12:54,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:54,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:54,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252917963] [2023-11-21 22:12:54,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252917963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:54,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:54,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:12:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881927039] [2023-11-21 22:12:54,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:54,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:54,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:54,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2023-11-21 22:12:54,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:54,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2023-11-21 22:12:54,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:54,278 INFO L124 PetriNetUnfolderBase]: 20/58 cut-off events. [2023-11-21 22:12:54,279 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:12:54,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 58 events. 20/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 16 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 109. Up to 42 conditions per place. [2023-11-21 22:12:54,280 INFO L140 encePairwiseOnDemand]: 15/18 looper letters, 13 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-11-21 22:12:54,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 72 flow [2023-11-21 22:12:54,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2023-11-21 22:12:54,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2023-11-21 22:12:54,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 31 transitions. [2023-11-21 22:12:54,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 31 transitions. [2023-11-21 22:12:54,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:54,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 31 transitions. [2023-11-21 22:12:54,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,285 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 36 flow. Second operand 3 states and 31 transitions. [2023-11-21 22:12:54,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 72 flow [2023-11-21 22:12:54,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 68 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:54,287 INFO L231 Difference]: Finished difference. Result has 19 places, 14 transitions, 34 flow [2023-11-21 22:12:54,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=14} [2023-11-21 22:12:54,289 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-11-21 22:12:54,289 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 14 transitions, 34 flow [2023-11-21 22:12:54,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:54,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:54,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:12:54,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2023-11-21 22:12:54,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash -30231109, now seen corresponding path program 1 times [2023-11-21 22:12:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767068279] [2023-11-21 22:12:54,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:54,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:54,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:54,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767068279] [2023-11-21 22:12:54,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767068279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:54,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:54,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:54,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21877685] [2023-11-21 22:12:54,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:54,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:54,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:54,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:54,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:54,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2023-11-21 22:12:54,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:54,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2023-11-21 22:12:54,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:54,528 INFO L124 PetriNetUnfolderBase]: 20/53 cut-off events. [2023-11-21 22:12:54,528 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:12:54,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 53 events. 20/53 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 119 event pairs, 16 based on Foata normal form. 5/58 useless extension candidates. Maximal degree in co-relation 104. Up to 42 conditions per place. [2023-11-21 22:12:54,529 INFO L140 encePairwiseOnDemand]: 15/18 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-11-21 22:12:54,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 70 flow [2023-11-21 22:12:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:12:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:12:54,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 36 transitions. [2023-11-21 22:12:54,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-21 22:12:54,531 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 36 transitions. [2023-11-21 22:12:54,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 36 transitions. [2023-11-21 22:12:54,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:54,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 36 transitions. [2023-11-21 22:12:54,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,533 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 34 flow. Second operand 4 states and 36 transitions. [2023-11-21 22:12:54,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 70 flow [2023-11-21 22:12:54,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 66 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:54,535 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-11-21 22:12:54,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-11-21 22:12:54,536 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-11-21 22:12:54,536 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-11-21 22:12:54,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:54,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 4 remaining) [2023-11-21 22:12:54,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 4 remaining) [2023-11-21 22:12:54,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2023-11-21 22:12:54,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-21 22:12:54,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:12:54,540 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 22:12:54,544 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:12:54,544 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:12:54,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:12:54 BasicIcfg [2023-11-21 22:12:54,551 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:12:54,551 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:12:54,551 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:12:54,551 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:12:54,552 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:53" (3/4) ... [2023-11-21 22:12:54,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:12:54,558 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-21 22:12:54,562 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-11-21 22:12:54,562 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-21 22:12:54,562 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-21 22:12:54,563 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 22:12:54,646 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:12:54,647 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:12:54,647 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:12:54,648 INFO L158 Benchmark]: Toolchain (without parser) took 2722.20ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 100.8MB in the beginning and 97.9MB in the end (delta: 2.9MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2023-11-21 22:12:54,648 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:12:54,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 662.59ms. Allocated memory is still 136.3MB. Free memory was 100.8MB in the beginning and 81.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 22:12:54,649 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.52ms. Allocated memory is still 136.3MB. Free memory was 81.4MB in the beginning and 79.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:12:54,649 INFO L158 Benchmark]: Boogie Preprocessor took 40.07ms. Allocated memory is still 136.3MB. Free memory was 79.3MB in the beginning and 78.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:12:54,650 INFO L158 Benchmark]: RCFGBuilder took 573.22ms. Allocated memory is still 136.3MB. Free memory was 78.3MB in the beginning and 88.1MB in the end (delta: -9.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 22:12:54,650 INFO L158 Benchmark]: TraceAbstraction took 1267.75ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 87.3MB in the beginning and 102.1MB in the end (delta: -14.8MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-11-21 22:12:54,651 INFO L158 Benchmark]: Witness Printer took 95.81ms. Allocated memory is still 163.6MB. Free memory was 102.1MB in the beginning and 97.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:12:54,653 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 662.59ms. Allocated memory is still 136.3MB. Free memory was 100.8MB in the beginning and 81.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.52ms. Allocated memory is still 136.3MB. Free memory was 81.4MB in the beginning and 79.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.07ms. Allocated memory is still 136.3MB. Free memory was 79.3MB in the beginning and 78.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 573.22ms. Allocated memory is still 136.3MB. Free memory was 78.3MB in the beginning and 88.1MB in the end (delta: -9.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1267.75ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 87.3MB in the beginning and 102.1MB in the end (delta: -14.8MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 95.81ms. Allocated memory is still 163.6MB. Free memory was 102.1MB in the beginning and 97.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 690]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 8 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=1, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 59 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 22:12:54,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3fd29c-2dd6-4aa4-8158-549e962ebcd2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE