./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-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 09aaf4da9760e082dee1b84490861799ac10c7d3871bbdf2d8243e88d9e00b49 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:50:30,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:50:30,338 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:50:30,344 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:50:30,345 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:50:30,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:50:30,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:50:30,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:50:30,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:50:30,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:50:30,377 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:50:30,378 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:50:30,379 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:50:30,379 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:50:30,380 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:50:30,381 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:50:30,381 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:50:30,382 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:50:30,382 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:50:30,383 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:50:30,384 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:50:30,384 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:50:30,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:50:30,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:50:30,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:50:30,387 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:50:30,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:50:30,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:50:30,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:50:30,389 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:50:30,390 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:50:30,390 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:50:30,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:50:30,391 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:50:30,392 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:50:30,392 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:50:30,393 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:50:30,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:50:30,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:50:30,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:30,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:50:30,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:50:30,396 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:50:30,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:50:30,397 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:50:30,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:50:30,398 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_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09aaf4da9760e082dee1b84490861799ac10c7d3871bbdf2d8243e88d9e00b49 [2023-11-12 00:50:30,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:50:30,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:50:30,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:50:30,770 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:50:30,772 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:50:30,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-wmm/safe014_rmo.opt.i [2023-11-12 00:50:33,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:50:34,298 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:50:34,299 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/sv-benchmarks/c/pthread-wmm/safe014_rmo.opt.i [2023-11-12 00:50:34,330 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/data/a4facb866/b18bea48d0454fde8df99360e1adbab4/FLAG0d6f04a6c [2023-11-12 00:50:34,346 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/data/a4facb866/b18bea48d0454fde8df99360e1adbab4 [2023-11-12 00:50:34,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:50:34,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:50:34,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:34,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:50:34,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:50:34,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:34" (1/1) ... [2023-11-12 00:50:34,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea17924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:34, skipping insertion in model container [2023-11-12 00:50:34,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:34" (1/1) ... [2023-11-12 00:50:34,446 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:50:34,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:50:34,891 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:50:35,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:50:35,047 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:35,047 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:35,055 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:50:35,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35 WrapperNode [2023-11-12 00:50:35,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:35,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:50:35,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:50:35,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:50:35,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,122 INFO L138 Inliner]: procedures = 176, calls = 83, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2023-11-12 00:50:35,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:50:35,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:50:35,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:50:35,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:50:35,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:50:35,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:50:35,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:50:35,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:50:35,176 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (1/1) ... [2023-11-12 00:50:35,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:35,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:35,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:50:35,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e00602-764f-4085-8f75-b6f4f396a417/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:50:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:50:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:50:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:50:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:50:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:50:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:50:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 00:50:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 00:50:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 00:50:35,292 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 00:50:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 00:50:35,292 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 00:50:35,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:50:35,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:50:35,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:50:35,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:50:35,296 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:50:35,523 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:50:35,526 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:50:36,228 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:50:37,183 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:50:37,183 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:50:37,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:50:37 BoogieIcfgContainer [2023-11-12 00:50:37,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:50:37,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:50:37,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:50:37,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:50:37,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:50:34" (1/3) ... [2023-11-12 00:50:37,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16df70e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:50:37, skipping insertion in model container [2023-11-12 00:50:37,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:35" (2/3) ... [2023-11-12 00:50:37,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16df70e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:50:37, skipping insertion in model container [2023-11-12 00:50:37,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:50:37" (3/3) ... [2023-11-12 00:50:37,200 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_rmo.opt.i [2023-11-12 00:50:37,220 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:50:37,220 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-11-12 00:50:37,221 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:50:37,389 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 00:50:37,425 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:50:37,439 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 197 transitions, 406 flow [2023-11-12 00:50:37,442 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 197 transitions, 406 flow [2023-11-12 00:50:37,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 197 transitions, 406 flow [2023-11-12 00:50:37,600 INFO L124 PetriNetUnfolderBase]: 3/194 cut-off events. [2023-11-12 00:50:37,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 00:50:37,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 194 events. 3/194 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 354 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-11-12 00:50:37,616 INFO L119 LiptonReduction]: Number of co-enabled transitions 9584 [2023-11-12 00:51:19,195 INFO L134 LiptonReduction]: Checked pairs total: 38615 [2023-11-12 00:51:19,196 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-11-12 00:51:19,207 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 91 transitions, 194 flow [2023-11-12 00:51:23,712 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 119052 states, 77022 states have (on average 5.878671029056633) internal successors, (452787), 119051 states have internal predecessors, (452787), 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) [2023-11-12 00:51:23,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:51:23,764 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;@deb55aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:51:23,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2023-11-12 00:51:23,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 119052 states, 77022 states have (on average 5.878671029056633) internal successors, (452787), 119051 states have internal predecessors, (452787), 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) [2023-11-12 00:51:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-12 00:51:23,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:51:23,936 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-12 00:51:23,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-12 00:51:23,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:51:23,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1253, now seen corresponding path program 1 times [2023-11-12 00:51:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:51:23,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884388885] [2023-11-12 00:51:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:23,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:51:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:51:24,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:51:24,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884388885] [2023-11-12 00:51:24,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884388885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:51:24,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:51:24,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 00:51:24,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574471973] [2023-11-12 00:51:24,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:51:24,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:51:24,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:51:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:51:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:51:24,531 INFO L87 Difference]: Start difference. First operand has 119052 states, 77022 states have (on average 5.878671029056633) internal successors, (452787), 119051 states have internal predecessors, (452787), 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)