./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe007_power.opt-thin001_power.opt.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_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/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_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe007_power.opt-thin001_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/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_f2d56052-1b15-428b-9de2-062c59f822fc/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 6328ead9c10c029445fd051d7c6329db494c1000fb08b7313fbd69c70835e259 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:31:35,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:31:35,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:31:35,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:31:35,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:31:35,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:31:35,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:31:35,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:31:35,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:31:35,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:31:35,467 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:31:35,467 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:31:35,468 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:31:35,470 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:31:35,470 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:31:35,471 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:31:35,471 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:31:35,472 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:31:35,472 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:31:35,473 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:31:35,473 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:31:35,474 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:31:35,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:31:35,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:31:35,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:31:35,478 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:31:35,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:31:35,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:31:35,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:31:35,480 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:31:35,481 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:31:35,481 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:31:35,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:31:35,482 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:31:35,493 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:31:35,493 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:31:35,494 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:31:35,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:31:35,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:31:35,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:35,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:31:35,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:31:35,496 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:31:35,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:31:35,496 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:31:35,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:31:35,497 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_f2d56052-1b15-428b-9de2-062c59f822fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6328ead9c10c029445fd051d7c6329db494c1000fb08b7313fbd69c70835e259 [2023-11-06 20:31:35,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:31:35,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:31:35,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:31:35,883 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:31:35,885 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:31:35,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2023-11-06 20:31:39,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:31:39,314 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:31:39,315 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/sv-benchmarks/c/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2023-11-06 20:31:39,346 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp/data/c610ce554/599faad3f31c4693bf3d00319e1fa3e4/FLAG3f5d02bff [2023-11-06 20:31:39,389 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp/data/c610ce554/599faad3f31c4693bf3d00319e1fa3e4 [2023-11-06 20:31:39,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:31:39,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:31:39,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:39,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:31:39,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:31:39,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:39" (1/1) ... [2023-11-06 20:31:39,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b44611b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:39, skipping insertion in model container [2023-11-06 20:31:39,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:39" (1/1) ... [2023-11-06 20:31:39,474 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:31:39,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:39,911 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:31:40,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:40,085 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:31:40,085 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:31:40,093 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:31:40,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40 WrapperNode [2023-11-06 20:31:40,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:40,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:31:40,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:31:40,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:31:40,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,204 INFO L138 Inliner]: procedures = 176, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 187 [2023-11-06 20:31:40,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:31:40,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:31:40,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:31:40,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:31:40,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:31:40,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:31:40,297 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:31:40,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:31:40,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (1/1) ... [2023-11-06 20:31:40,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:40,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:31:40,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:31:40,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d56052-1b15-428b-9de2-062c59f822fc/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:31:40,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:31:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:31:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 20:31:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:31:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:31:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:31:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 20:31:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 20:31:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 20:31:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 20:31:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 20:31:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 20:31:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:31:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 20:31:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:31:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:31:40,395 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 20:31:40,682 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:31:40,683 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:31:41,325 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:31:42,133 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:31:42,133 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:31:42,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:31:42 BoogieIcfgContainer [2023-11-06 20:31:42,137 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:31:42,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:31:42,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:31:42,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:31:42,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:31:39" (1/3) ... [2023-11-06 20:31:42,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad03f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:31:42, skipping insertion in model container [2023-11-06 20:31:42,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:40" (2/3) ... [2023-11-06 20:31:42,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad03f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:31:42, skipping insertion in model container [2023-11-06 20:31:42,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:31:42" (3/3) ... [2023-11-06 20:31:42,150 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_power.opt-thin001_power.opt.i [2023-11-06 20:31:42,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:31:42,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-11-06 20:31:42,170 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:31:42,319 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 20:31:42,360 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:31:42,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 175 transitions, 362 flow [2023-11-06 20:31:42,383 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 175 transitions, 362 flow [2023-11-06 20:31:42,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 175 transitions, 362 flow [2023-11-06 20:31:42,515 INFO L124 PetriNetUnfolderBase]: 3/172 cut-off events. [2023-11-06 20:31:42,515 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 20:31:42,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 172 events. 3/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 232 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2023-11-06 20:31:42,529 INFO L119 LiptonReduction]: Number of co-enabled transitions 5778 [2023-11-06 20:32:06,157 INFO L134 LiptonReduction]: Checked pairs total: 21870 [2023-11-06 20:32:06,158 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-11-06 20:32:06,167 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 67 transitions, 146 flow [2023-11-06 20:32:07,031 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15204 states, 14055 states have (on average 3.888438278192814) internal successors, (54652), 15203 states have internal predecessors, (54652), 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 20:32:07,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:32:07,070 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;@4524ad9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:32:07,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2023-11-06 20:32:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 15204 states, 14055 states have (on average 3.888438278192814) internal successors, (54652), 15203 states have internal predecessors, (54652), 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 20:32:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-06 20:32:07,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:32:07,120 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-06 20:32:07,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-06 20:32:07,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:32:07,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1098, now seen corresponding path program 1 times [2023-11-06 20:32:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:32:07,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065864299] [2023-11-06 20:32:07,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:32:07,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:32:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:32:07,448 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 20:32:07,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:32:07,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065864299] [2023-11-06 20:32:07,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065864299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:32:07,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:32:07,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 20:32:07,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78746237] [2023-11-06 20:32:07,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:32:07,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:32:07,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:32:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:32:07,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:32:07,535 INFO L87 Difference]: Start difference. First operand has 15204 states, 14055 states have (on average 3.888438278192814) internal successors, (54652), 15203 states have internal predecessors, (54652), 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 20:32:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:32:07,828 INFO L93 Difference]: Finished difference Result 6714 states and 23324 transitions. [2023-11-06 20:32:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:32:07,832 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 20:32:07,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:32:07,960 INFO L225 Difference]: With dead ends: 6714 [2023-11-06 20:32:07,960 INFO L226 Difference]: Without dead ends: 6714 [2023-11-06 20:32:07,963 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 20:32:07,968 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:32:07,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:32:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2023-11-06 20:32:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 6714. [2023-11-06 20:32:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6714 states, 6337 states have (on average 3.68060596496765) internal successors, (23324), 6713 states have internal predecessors, (23324), 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 20:32:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 23324 transitions. [2023-11-06 20:32:08,575 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 23324 transitions. Word has length 1 [2023-11-06 20:32:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:32:08,575 INFO L495 AbstractCegarLoop]: Abstraction has 6714 states and 23324 transitions. [2023-11-06 20:32:08,576 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 20:32:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 23324 transitions. [2023-11-06 20:32:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 20:32:08,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:32:08,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 20:32:08,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:32:08,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-06 20:32:08,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:32:08,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2027798787, now seen corresponding path program 1 times [2023-11-06 20:32:08,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:32:08,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953912637] [2023-11-06 20:32:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:32:08,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:32:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat