./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/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_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9184a10f76289bc351ce16b4243b6d0e46782fe8318237a8a819d2b43a92673 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:05,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:05,699 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:02:05,710 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:05,711 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:05,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:05,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:05,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:05,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:05,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:05,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:05,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:05,779 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:05,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:05,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:05,783 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:05,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:05,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:05,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:05,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:05,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:05,786 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:05,786 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:05,787 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:05,787 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:05,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:05,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:05,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:05,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:05,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:05,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:05,793 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:05,793 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:05,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:05,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:05,795 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:05,795 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:05,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:05,796 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:05,796 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_07a1b0a1-ffec-4208-994c-502fb74ca3b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9184a10f76289bc351ce16b4243b6d0e46782fe8318237a8a819d2b43a92673 [2023-11-19 08:02:06,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:06,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:06,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:06,199 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:06,199 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:06,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2023-11-19 08:02:09,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:02:10,013 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:02:10,014 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2023-11-19 08:02:10,039 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/data/4c013914f/193c9304490d42639d5dc8ba5281054b/FLAGa2c7be80e [2023-11-19 08:02:10,322 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/data/4c013914f/193c9304490d42639d5dc8ba5281054b [2023-11-19 08:02:10,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:02:10,328 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:02:10,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:10,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:02:10,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:02:10,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c69560b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10, skipping insertion in model container [2023-11-19 08:02:10,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,386 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:02:10,637 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c[5378,5391] [2023-11-19 08:02:10,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:10,660 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:02:10,714 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c[5378,5391] [2023-11-19 08:02:10,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:10,728 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:02:10,729 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:02:10,738 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:02:10,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10 WrapperNode [2023-11-19 08:02:10,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:10,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:10,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:02:10,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:02:10,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,829 INFO L138 Inliner]: procedures = 27, calls = 130, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 377 [2023-11-19 08:02:10,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:10,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:02:10,830 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:02:10,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:02:10,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:02:10,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:02:10,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:02:10,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:02:10,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:10,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:10,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:02:10,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1b0a1-ffec-4208-994c-502fb74ca3b9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:02:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:02:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:02:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:02:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:02:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:02:11,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:02:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:02:11,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:02:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 08:02:11,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 08:02:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 08:02:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 08:02:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:02:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-19 08:02:11,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-19 08:02:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-19 08:02:11,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-19 08:02:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-11-19 08:02:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-11-19 08:02:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2023-11-19 08:02:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2023-11-19 08:02:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:02:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:02:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:02:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:02:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:02:11,038 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 08:02:11,260 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:02:11,265 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:11,867 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:12,070 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:12,071 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:02:12,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:12 BoogieIcfgContainer [2023-11-19 08:02:12,077 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:12,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:12,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:12,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:12,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:10" (1/3) ... [2023-11-19 08:02:12,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c04aa2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:12, skipping insertion in model container [2023-11-19 08:02:12,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (2/3) ... [2023-11-19 08:02:12,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c04aa2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:12, skipping insertion in model container [2023-11-19 08:02:12,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:12" (3/3) ... [2023-11-19 08:02:12,090 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2023-11-19 08:02:12,101 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:02:12,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:12,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:02:12,116 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:02:12,243 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-19 08:02:12,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 250 transitions, 556 flow [2023-11-19 08:02:12,544 INFO L124 PetriNetUnfolderBase]: 2/242 cut-off events. [2023-11-19 08:02:12,544 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:02:12,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 242 events. 2/242 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 130 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 192. Up to 2 conditions per place. [2023-11-19 08:02:12,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 250 transitions, 556 flow [2023-11-19 08:02:12,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 221 transitions, 490 flow [2023-11-19 08:02:12,564 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:02:12,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 221 transitions, 490 flow [2023-11-19 08:02:12,582 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 221 transitions, 490 flow [2023-11-19 08:02:12,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 221 transitions, 490 flow [2023-11-19 08:02:12,673 INFO L124 PetriNetUnfolderBase]: 2/221 cut-off events. [2023-11-19 08:02:12,674 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:02:12,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 221 events. 2/221 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 129 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 192. Up to 2 conditions per place. [2023-11-19 08:02:12,683 INFO L119 LiptonReduction]: Number of co-enabled transitions 6796 [2023-11-19 08:02:28,658 INFO L134 LiptonReduction]: Checked pairs total: 31431 [2023-11-19 08:02:28,658 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-11-19 08:02:28,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:28,681 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4417486f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:28,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 08:02:28,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:02:28,703 INFO L124 PetriNetUnfolderBase]: 0/65 cut-off events. [2023-11-19 08:02:28,703 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:02:28,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:28,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:28,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-19 08:02:28,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:28,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1981848014, now seen corresponding path program 1 times [2023-11-19 08:02:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:28,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714806479] [2023-11-19 08:02:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:31,532 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 08:02:31,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:31,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714806479] [2023-11-19 08:02:31,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714806479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:31,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:31,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:31,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306501570] [2023-11-19 08:02:31,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:31,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:31,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:31,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:31,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:31,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 415 [2023-11-19 08:02:31,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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 08:02:31,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:31,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 415 [2023-11-19 08:02:31,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand