./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6a420ba5144c69cefe02db203552770c4018653c510d9792e57ffedc3dfc64e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 11:25:53,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 11:25:53,858 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2024-11-23 11:25:53,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 11:25:53,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 11:25:53,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 11:25:53,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 11:25:53,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 11:25:53,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 11:25:53,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 11:25:53,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 11:25:53,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 11:25:53,909 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 11:25:53,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 11:25:53,909 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 11:25:53,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 11:25:53,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 11:25:53,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 11:25:53,910 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 11:25:53,910 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 11:25:53,910 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 11:25:53,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 11:25:53,910 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 11:25:53,910 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 11:25:53,910 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 11:25:53,911 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 11:25:53,911 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 11:25:53,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 11:25:53,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 11:25:53,911 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 11:25:53,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 11:25:53,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-23 11:25:53,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 11:25:53,912 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 11:25:53,912 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 11:25:53,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 11:25:53,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 11:25:53,912 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2024-11-23 11:25:53,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-23 11:25:53,914 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-23 11:25:53,914 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-23 11:25:53,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca 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 -> GemCutter 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 -> f6a420ba5144c69cefe02db203552770c4018653c510d9792e57ffedc3dfc64e [2024-11-23 11:25:54,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 11:25:54,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 11:25:54,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 11:25:54,259 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 11:25:54,259 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 11:25:54,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2024-11-23 11:25:57,101 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/data/3a1a35eec/eeacb7f2ac3b4e8ba48e80e953d9f878/FLAG430b555ce [2024-11-23 11:25:57,433 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 11:25:57,434 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2024-11-23 11:25:57,447 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/data/3a1a35eec/eeacb7f2ac3b4e8ba48e80e953d9f878/FLAG430b555ce [2024-11-23 11:25:57,461 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/data/3a1a35eec/eeacb7f2ac3b4e8ba48e80e953d9f878 [2024-11-23 11:25:57,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 11:25:57,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 11:25:57,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 11:25:57,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 11:25:57,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 11:25:57,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:25:57" (1/1) ... [2024-11-23 11:25:57,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fddbf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:57, skipping insertion in model container [2024-11-23 11:25:57,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:25:57" (1/1) ... [2024-11-23 11:25:57,507 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 11:25:57,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 11:25:57,939 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 11:25:58,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 11:25:58,089 INFO L204 MainTranslator]: Completed translation [2024-11-23 11:25:58,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58 WrapperNode [2024-11-23 11:25:58,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 11:25:58,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 11:25:58,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 11:25:58,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 11:25:58,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,167 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 829 [2024-11-23 11:25:58,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 11:25:58,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 11:25:58,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 11:25:58,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 11:25:58,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,209 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 11:25:58,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 11:25:58,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 11:25:58,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 11:25:58,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (1/1) ... [2024-11-23 11:25:58,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-23 11:25:58,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:25:58,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-23 11:25:58,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-23 11:25:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-23 11:25:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-23 11:25:58,312 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-23 11:25:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-23 11:25:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 11:25:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 11:25:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 11:25:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 11:25:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-23 11:25:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 11:25:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 11:25:58,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 11:25:58,316 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 11:25:58,483 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 11:25:58,485 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 11:25:59,730 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 11:25:59,730 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 11:26:13,760 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 11:26:13,760 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-23 11:26:13,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:26:13 BoogieIcfgContainer [2024-11-23 11:26:13,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 11:26:13,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 11:26:13,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 11:26:13,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 11:26:13,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:25:57" (1/3) ... [2024-11-23 11:26:13,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78967d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:26:13, skipping insertion in model container [2024-11-23 11:26:13,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:58" (2/3) ... [2024-11-23 11:26:13,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78967d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:26:13, skipping insertion in model container [2024-11-23 11:26:13,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:26:13" (3/3) ... [2024-11-23 11:26:13,773 INFO L128 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-2.i [2024-11-23 11:26:13,790 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 11:26:13,793 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 26_stack_cas_longer-2.i that has 2 procedures, 74 locations, 1 initial locations, 3 loop locations, and 40 error locations. [2024-11-23 11:26:13,793 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 11:26:14,112 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 11:26:14,172 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 11:26:14,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-11-23 11:26:14,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:26:14,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-11-23 11:26:14,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb29ed04-1c70-404f-b706-b6c64349d171/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-11-23 11:26:14,282 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-23 11:26:14,294 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2024-11-23 11:26:14,303 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53f25bc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 11:26:14,305 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-23 11:26:14,659 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-23 11:26:14,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:26:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1878255503, now seen corresponding path program 1 times [2024-11-23 11:26:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:26:14,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236501176] [2024-11-23 11:26:14,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:26:14,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms