./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a9379df521a7077d18fd2276dc35da388f77854d23421e689a681d711c31769 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:11,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:11,782 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:01:11,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:11,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:11,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:11,821 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:11,821 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:11,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:11,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:11,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:11,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:11,825 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:11,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:11,826 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:11,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:11,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:11,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:11,829 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:01:11,829 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:01:11,829 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:01:11,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:11,831 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:01:11,831 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:01:11,832 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:11,832 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:11,833 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:11,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:11,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:11,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:11,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:11,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:11,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:11,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:11,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:11,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:11,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:11,837 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:11,837 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a9379df521a7077d18fd2276dc35da388f77854d23421e689a681d711c31769 [2023-11-19 08:01:12,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:12,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:12,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:12,256 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:12,257 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:12,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe002_power.oepc.i [2023-11-19 08:01:15,496 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:15,798 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:15,804 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/sv-benchmarks/c/pthread-wmm/safe002_power.oepc.i [2023-11-19 08:01:15,826 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/data/4ffac2b54/6f47a29182fe48edb4cba3f9cb8b6fe6/FLAGeb57c26c3 [2023-11-19 08:01:15,847 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/data/4ffac2b54/6f47a29182fe48edb4cba3f9cb8b6fe6 [2023-11-19 08:01:15,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:15,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:15,862 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:15,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:15,868 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:15,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:15" (1/1) ... [2023-11-19 08:01:15,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459fd42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:15, skipping insertion in model container [2023-11-19 08:01:15,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:15" (1/1) ... [2023-11-19 08:01:15,956 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:16,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:16,514 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:16,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:16,649 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:16,649 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:16,658 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:16,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16 WrapperNode [2023-11-19 08:01:16,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:16,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:16,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:16,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:16,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,693 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,729 INFO L138 Inliner]: procedures = 176, calls = 85, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2023-11-19 08:01:16,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:16,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:16,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:16,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:16,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:16,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:16,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:16,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:16,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (1/1) ... [2023-11-19 08:01:16,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:16,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:16,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:16,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe19ca8-c336-4a0e-a894-d269d6d706fe/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:01:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:01:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:01:16,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:01:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:01:16,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:01:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 08:01:16,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 08:01:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:01:16,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:16,917 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:01:17,096 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:17,098 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:17,980 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:18,969 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:18,969 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:01:18,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:18 BoogieIcfgContainer [2023-11-19 08:01:18,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:18,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:18,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:18,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:18,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:15" (1/3) ... [2023-11-19 08:01:18,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:18, skipping insertion in model container [2023-11-19 08:01:18,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:16" (2/3) ... [2023-11-19 08:01:18,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:18, skipping insertion in model container [2023-11-19 08:01:18,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:18" (3/3) ... [2023-11-19 08:01:18,984 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_power.oepc.i [2023-11-19 08:01:19,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:19,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2023-11-19 08:01:19,007 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:01:19,303 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:01:19,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 276 transitions, 564 flow [2023-11-19 08:01:19,610 INFO L124 PetriNetUnfolderBase]: 77/273 cut-off events. [2023-11-19 08:01:19,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:19,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 273 events. 77/273 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 459 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 216. Up to 6 conditions per place. [2023-11-19 08:01:19,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 276 transitions, 564 flow [2023-11-19 08:01:19,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 273 transitions, 555 flow [2023-11-19 08:01:19,652 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:19,670 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 273 transitions, 555 flow [2023-11-19 08:01:19,674 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 273 transitions, 555 flow [2023-11-19 08:01:19,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 273 transitions, 555 flow [2023-11-19 08:01:19,807 INFO L124 PetriNetUnfolderBase]: 77/273 cut-off events. [2023-11-19 08:01:19,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:19,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 273 events. 77/273 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 468 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 216. Up to 6 conditions per place. [2023-11-19 08:01:19,835 INFO L119 LiptonReduction]: Number of co-enabled transitions 28596 [2023-11-19 08:01:52,218 INFO L134 LiptonReduction]: Checked pairs total: 68982 [2023-11-19 08:01:52,218 INFO L136 LiptonReduction]: Total number of compositions: 299 [2023-11-19 08:01:52,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:01:52,265 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=PETRI_NET, 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;@321348aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:01:52,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 109 error locations. [2023-11-19 08:01:52,267 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:01:52,271 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:01:52,271 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:52,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:52,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:01:52,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-19 08:01:52,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:52,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1653, now seen corresponding path program 1 times [2023-11-19 08:01:52,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:52,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60080089] [2023-11-19 08:01:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:52,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:52,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60080089] [2023-11-19 08:01:52,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60080089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:52,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:52,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:01:52,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367305690] [2023-11-19 08:01:52,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:52,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:01:52,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:52,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:01:52,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:01:52,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 575 [2023-11-19 08:01:52,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 197 flow. Second operand has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 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) [2023-11-19 08:01:52,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:52,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 575 [2023-11-19 08:01:52,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:03,070 INFO L124 PetriNetUnfolderBase]: 30829/42891 cut-off events. [2023-11-19 08:02:03,070 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-19 08:02:03,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85908 conditions, 42891 events. 30829/42891 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 2553. Compared 275276 event pairs, 30829 based on Foata normal form. 660/17966 useless extension candidates. Maximal degree in co-relation 85897. Up to 42891 conditions per place. [2023-11-19 08:02:03,404 INFO L140 encePairwiseOnDemand]: 532/575 looper letters, 50 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2023-11-19 08:02:03,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 211 flow [2023-11-19 08:02:03,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:02:03,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:02:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 351 transitions. [2023-11-19 08:02:03,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30521739130434783 [2023-11-19 08:02:03,427 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 351 transitions. [2023-11-19 08:02:03,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 351 transitions. [2023-11-19 08:02:03,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:03,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 351 transitions. [2023-11-19 08:02:03,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 175.5) internal successors, (351), 2 states have internal predecessors, (351), 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) [2023-11-19 08:02:03,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 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) [2023-11-19 08:02:03,449 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 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) [2023-11-19 08:02:03,451 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 197 flow. Second operand 2 states and 351 transitions. [2023-11-19 08:02:03,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 211 flow [2023-11-19 08:02:03,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 51 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:02:03,461 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 108 flow [2023-11-19 08:02:03,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-19 08:02:03,467 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2023-11-19 08:02:03,467 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 108 flow [2023-11-19 08:02:03,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 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) [2023-11-19 08:02:03,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:03,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:02:03,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:02:03,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-19 08:02:03,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1632874, now seen corresponding path program 1 times [2023-11-19 08:02:03,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:03,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683811336] [2023-11-19 08:02:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:03,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:03,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:03,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683811336] [2023-11-19 08:02:03,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683811336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:03,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:03,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:02:03,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628804861] [2023-11-19 08:02:03,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:03,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:03,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:03,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:03,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 575 [2023-11-19 08:02:03,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2023-11-19 08:02:03,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:03,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 575 [2023-11-19 08:02:03,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand