./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --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_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/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_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/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_4aa19140-cb5a-4c7b-ad98-77e26e095227/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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:58:18,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:58:18,994 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:58:19,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:58:19,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:58:19,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:58:19,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:58:19,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:58:19,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:58:19,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:58:19,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:58:19,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:58:19,056 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:58:19,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:58:19,059 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:58:19,059 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:58:19,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:58:19,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:58:19,061 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:58:19,061 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:58:19,061 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:58:19,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:58:19,064 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:58:19,064 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:58:19,065 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:58:19,065 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:58:19,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:58:19,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:58:19,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:58:19,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:19,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:58:19,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:58:19,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:58:19,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:58:19,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:58:19,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:58:19,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:58:19,071 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:58:19,071 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_4aa19140-cb5a-4c7b-ad98-77e26e095227/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2023-11-19 07:58:19,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:58:19,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:58:19,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:58:19,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:58:19,472 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:58:19,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2023-11-19 07:58:22,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:23,235 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:23,236 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2023-11-19 07:58:23,254 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu/data/b06aefe75/3890cfe7c6354af5adc67d9a345a2afb/FLAGeea26277b [2023-11-19 07:58:23,279 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu/data/b06aefe75/3890cfe7c6354af5adc67d9a345a2afb [2023-11-19 07:58:23,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:23,289 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:23,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:23,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:23,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:23,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ceffa37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23, skipping insertion in model container [2023-11-19 07:58:23,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,364 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:23,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:23,683 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:23,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:23,780 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:23,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23 WrapperNode [2023-11-19 07:58:23,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:23,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:23,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:23,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:23,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,883 INFO L138 Inliner]: procedures = 26, calls = 77, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 608 [2023-11-19 07:58:23,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:23,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:23,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:23,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:23,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:23,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:24,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:24,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:24,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:24,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:24,011 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (1/1) ... [2023-11-19 07:58:24,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:24,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:24,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:24,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa19140-cb5a-4c7b-ad98-77e26e095227/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:24,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:24,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:24,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:58:24,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:58:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:58:24,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:58:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:58:24,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:58:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:58:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:24,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:24,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:24,124 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 07:58:24,354 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:24,357 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:25,692 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:25,719 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:25,720 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:58:25,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:25 BoogieIcfgContainer [2023-11-19 07:58:25,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:25,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:25,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:25,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:25,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:23" (1/3) ... [2023-11-19 07:58:25,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5beffd4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:25, skipping insertion in model container [2023-11-19 07:58:25,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:23" (2/3) ... [2023-11-19 07:58:25,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5beffd4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:25, skipping insertion in model container [2023-11-19 07:58:25,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:25" (3/3) ... [2023-11-19 07:58:25,748 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-11-19 07:58:25,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:25,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-11-19 07:58:25,771 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:58:26,068 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:58:26,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 800 places, 863 transitions, 1747 flow [2023-11-19 07:58:26,838 INFO L124 PetriNetUnfolderBase]: 73/860 cut-off events. [2023-11-19 07:58:26,838 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:58:26,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 860 events. 73/860 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3220 event pairs, 0 based on Foata normal form. 0/719 useless extension candidates. Maximal degree in co-relation 630. Up to 2 conditions per place. [2023-11-19 07:58:26,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 800 places, 863 transitions, 1747 flow [2023-11-19 07:58:26,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 792 places, 855 transitions, 1728 flow [2023-11-19 07:58:26,923 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:26,942 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 792 places, 855 transitions, 1728 flow [2023-11-19 07:58:26,948 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 792 places, 855 transitions, 1728 flow [2023-11-19 07:58:26,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 792 places, 855 transitions, 1728 flow [2023-11-19 07:58:27,372 INFO L124 PetriNetUnfolderBase]: 73/855 cut-off events. [2023-11-19 07:58:27,373 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:58:27,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 855 events. 73/855 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3212 event pairs, 0 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 630. Up to 2 conditions per place. [2023-11-19 07:58:27,511 INFO L119 LiptonReduction]: Number of co-enabled transitions 237120