./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e523f48 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y --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 f66a662852389d8ac1f64241746e843d67de7f5d7507051fb5c8e68404b785cd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-5e523f4 [2024-11-21 00:53:28,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 00:53:29,016 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2024-11-21 00:53:29,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 00:53:29,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 00:53:29,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 00:53:29,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 00:53:29,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 00:53:29,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 00:53:29,048 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 00:53:29,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 00:53:29,049 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 00:53:29,049 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 00:53:29,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 00:53:29,049 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 00:53:29,049 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 00:53:29,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 00:53:29,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 00:53:29,050 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-21 00:53:29,050 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-21 00:53:29,050 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-21 00:53:29,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 00:53:29,050 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-21 00:53:29,051 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-21 00:53:29,051 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 00:53:29,051 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-21 00:53:29,051 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 00:53:29,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 00:53:29,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 00:53:29,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 00:53:29,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 00:53:29,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-21 00:53:29,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 00:53:29,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 00:53:29,056 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 00:53:29,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 00:53:29,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 00:53:29,056 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2024-11-21 00:53:29,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-21 00:53:29,056 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-21 00:53:29,056 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-21 00:53:29,056 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_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y 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 -> f66a662852389d8ac1f64241746e843d67de7f5d7507051fb5c8e68404b785cd [2024-11-21 00:53:29,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 00:53:29,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 00:53:29,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 00:53:29,412 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 00:53:29,412 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 00:53:29,414 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i [2024-11-21 00:53:32,433 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/data/9ebefd4fa/88429ad7ad5f454e9d62a6f290d7c414/FLAG7f9a9d572 [2024-11-21 00:53:32,756 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 00:53:32,756 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i [2024-11-21 00:53:32,784 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/data/9ebefd4fa/88429ad7ad5f454e9d62a6f290d7c414/FLAG7f9a9d572 [2024-11-21 00:53:32,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/data/9ebefd4fa/88429ad7ad5f454e9d62a6f290d7c414 [2024-11-21 00:53:33,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 00:53:33,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 00:53:33,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 00:53:33,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 00:53:33,009 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 00:53:33,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:53:32" (1/1) ... [2024-11-21 00:53:33,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183b6a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33, skipping insertion in model container [2024-11-21 00:53:33,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:53:32" (1/1) ... [2024-11-21 00:53:33,047 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 00:53:33,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 00:53:33,446 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 00:53:33,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 00:53:33,675 INFO L204 MainTranslator]: Completed translation [2024-11-21 00:53:33,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33 WrapperNode [2024-11-21 00:53:33,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 00:53:33,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 00:53:33,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 00:53:33,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 00:53:33,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,792 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 829 [2024-11-21 00:53:33,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 00:53:33,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 00:53:33,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 00:53:33,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 00:53:33,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,842 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 00:53:33,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 00:53:33,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 00:53:33,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 00:53:33,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (1/1) ... [2024-11-21 00:53:33,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-21 00:53:33,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/z3 [2024-11-21 00:53:33,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-21 00:53:33,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-21 00:53:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-21 00:53:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-21 00:53:33,960 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-21 00:53:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-21 00:53:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-21 00:53:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 00:53:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 00:53:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 00:53:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-21 00:53:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-21 00:53:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 00:53:33,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 00:53:33,964 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-21 00:53:34,145 INFO L234 CfgBuilder]: Building ICFG [2024-11-21 00:53:34,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 00:53:35,526 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-21 00:53:35,526 INFO L283 CfgBuilder]: Performing block encoding [2024-11-21 00:53:50,189 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 00:53:50,189 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-21 00:53:50,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:53:50 BoogieIcfgContainer [2024-11-21 00:53:50,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 00:53:50,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 00:53:50,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 00:53:50,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 00:53:50,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:53:32" (1/3) ... [2024-11-21 00:53:50,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49faf701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:53:50, skipping insertion in model container [2024-11-21 00:53:50,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:33" (2/3) ... [2024-11-21 00:53:50,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49faf701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:53:50, skipping insertion in model container [2024-11-21 00:53:50,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:53:50" (3/3) ... [2024-11-21 00:53:50,201 INFO L128 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2024-11-21 00:53:50,220 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 00:53:50,223 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 26_stack_cas_longer-1.i that has 2 procedures, 74 locations, 1 initial locations, 3 loop locations, and 40 error locations. [2024-11-21 00:53:50,224 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-21 00:53:50,632 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-21 00:53:50,699 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 00:53:50,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-11-21 00:53:50,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/z3 [2024-11-21 00:53:50,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-11-21 00:53:50,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd4bd8b-ac09-423a-a60e-30caa90a0f44/bin/ugemcutter-verify-jAHUagO94Y/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-11-21 00:53:50,822 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-21 00:53:50,835 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2024-11-21 00:53:50,844 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;@97b2bd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 00:53:50,844 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-21 00:53:51,254 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-21 00:53:51,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 00:53:51,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1878255503, now seen corresponding path program 1 times [2024-11-21 00:53:51,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 00:53:51,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838502638] [2024-11-21 00:53:51,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 00:53:51,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms