./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_rmo.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_rmo.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0d8ae33a1a7c98578096fc4895533f629cc4062ad641b886abfeea14ddb85d4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:32:20,123 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:32:20,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:32:20,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:32:20,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:32:20,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:32:20,299 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:32:20,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:32:20,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:32:20,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:32:20,307 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:32:20,308 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:32:20,308 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:32:20,310 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:32:20,311 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:32:20,311 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:32:20,311 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:32:20,312 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:32:20,312 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:32:20,313 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:32:20,313 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:32:20,314 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:32:20,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:32:20,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:32:20,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:32:20,316 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:32:20,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:32:20,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:32:20,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:32:20,318 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:32:20,319 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:32:20,320 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:32:20,320 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:32:20,320 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:32:20,320 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:32:20,321 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:32:20,321 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:32:20,321 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:32:20,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:32:20,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:32:20,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:32:20,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:32:20,322 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:32:20,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:32:20,323 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:32:20,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:32:20,324 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0d8ae33a1a7c98578096fc4895533f629cc4062ad641b886abfeea14ddb85d4 [2023-11-06 20:32:20,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:32:20,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:32:20,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:32:20,675 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:32:20,677 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:32:20,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-wmm/thin002_rmo.i [2023-11-06 20:32:23,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:32:24,323 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:32:24,328 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/sv-benchmarks/c/pthread-wmm/thin002_rmo.i [2023-11-06 20:32:24,357 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/data/d6b76ddeb/0326306f1b2b4fc0b3f343d4af8c9b8f/FLAG690fd3cae [2023-11-06 20:32:24,375 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/data/d6b76ddeb/0326306f1b2b4fc0b3f343d4af8c9b8f [2023-11-06 20:32:24,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:32:24,384 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:32:24,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:32:24,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:32:24,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:32:24,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:32:24" (1/1) ... [2023-11-06 20:32:24,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cfc9ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:24, skipping insertion in model container [2023-11-06 20:32:24,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:32:24" (1/1) ... [2023-11-06 20:32:24,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:32:24,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:32:25,012 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:32:25,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:32:25,145 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:32:25,145 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:32:25,153 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:32:25,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25 WrapperNode [2023-11-06 20:32:25,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:32:25,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:32:25,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:32:25,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:32:25,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,241 INFO L138 Inliner]: procedures = 177, calls = 81, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 157 [2023-11-06 20:32:25,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:32:25,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:32:25,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:32:25,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:32:25,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:32:25,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:32:25,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:32:25,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:32:25,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (1/1) ... [2023-11-06 20:32:25,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:32:25,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:32:25,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:32:25,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdf9ad0-d0d4-4be9-845c-ffe078cea854/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:32:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:32:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:32:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 20:32:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:32:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:32:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:32:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 20:32:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 20:32:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 20:32:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 20:32:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 20:32:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 20:32:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 20:32:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 20:32:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:32:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 20:32:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:32:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:32:25,422 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 20:32:25,653 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:32:25,656 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:32:26,257 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:32:26,629 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:32:26,630 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:32:26,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:32:26 BoogieIcfgContainer [2023-11-06 20:32:26,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:32:26,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:32:26,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:32:26,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:32:26,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:32:24" (1/3) ... [2023-11-06 20:32:26,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129c61aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:32:26, skipping insertion in model container [2023-11-06 20:32:26,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:32:25" (2/3) ... [2023-11-06 20:32:26,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129c61aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:32:26, skipping insertion in model container [2023-11-06 20:32:26,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:32:26" (3/3) ... [2023-11-06 20:32:26,644 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_rmo.i [2023-11-06 20:32:26,664 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:32:26,665 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-06 20:32:26,665 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:32:26,797 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 20:32:26,842 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:32:26,862 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 191 transitions, 398 flow [2023-11-06 20:32:26,867 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 191 transitions, 398 flow [2023-11-06 20:32:26,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 191 transitions, 398 flow [2023-11-06 20:32:27,007 INFO L124 PetriNetUnfolderBase]: 3/187 cut-off events. [2023-11-06 20:32:27,008 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 20:32:27,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 187 events. 3/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 211 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2023-11-06 20:32:27,022 INFO L119 LiptonReduction]: Number of co-enabled transitions 6794 [2023-11-06 20:32:44,233 INFO L134 LiptonReduction]: Checked pairs total: 21774 [2023-11-06 20:32:44,233 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-11-06 20:32:44,242 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 70 transitions, 156 flow [2023-11-06 20:32:47,070 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 46644 states, 45746 states have (on average 4.390045031259564) internal successors, (200827), 46643 states have internal predecessors, (200827), 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) [2023-11-06 20:32:47,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:32:47,110 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@26d74c7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:32:47,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-11-06 20:32:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 46644 states, 45746 states have (on average 4.390045031259564) internal successors, (200827), 46643 states have internal predecessors, (200827), 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) [2023-11-06 20:32:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-06 20:32:47,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:32:47,307 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-06 20:32:47,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-11-06 20:32:47,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:32:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash 915, now seen corresponding path program 1 times [2023-11-06 20:32:47,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:32:47,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909657606] [2023-11-06 20:32:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:32:47,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:32:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:32:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:32:47,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:32:47,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909657606] [2023-11-06 20:32:47,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909657606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:32:47,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:32:47,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 20:32:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406525554] [2023-11-06 20:32:47,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:32:47,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:32:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:32:47,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:32:47,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:32:47,638 INFO L87 Difference]: Start difference. First operand has 46644 states, 45746 states have (on average 4.390045031259564) internal successors, (200827), 46643 states have internal predecessors, (200827), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-06 20:32:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:32:48,501 INFO L93 Difference]: Finished difference Result 14108 states and 58253 transitions. [2023-11-06 20:32:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:32:48,518 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2023-11-06 20:32:48,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:32:49,024 INFO L225 Difference]: With dead ends: 14108 [2023-11-06 20:32:49,035 INFO L226 Difference]: Without dead ends: 14108 [2023-11-06 20:32:49,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:32:49,057 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:32:49,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:32:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14108 states. [2023-11-06 20:32:50,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14108 to 14108. [2023-11-06 20:32:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14108 states, 13974 states have (on average 4.168670387863174) internal successors, (58253), 14107 states have internal predecessors, (58253), 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) [2023-11-06 20:32:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 58253 transitions. [2023-11-06 20:32:50,313 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 58253 transitions. Word has length 1 [2023-11-06 20:32:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:32:50,314 INFO L495 AbstractCegarLoop]: Abstraction has 14108 states and 58253 transitions. [2023-11-06 20:32:50,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-06 20:32:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 58253 transitions. [2023-11-06 20:32:50,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 20:32:50,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:32:50,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 20:32:50,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:32:50,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-11-06 20:32:50,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:32:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash 903423, now seen corresponding path program 1 times [2023-11-06 20:32:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:32:50,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549151679] [2023-11-06 20:32:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:32:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:32:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat