./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya --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 b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:43:16,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:43:16,577 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:43:16,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:43:16,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:43:16,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:43:16,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:43:16,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:43:16,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:43:16,606 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:43:16,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:43:16,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:43:16,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:43:16,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:43:16,609 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:43:16,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:43:16,610 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:43:16,611 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:43:16,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:43:16,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:43:16,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:43:16,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:43:16,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:43:16,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:43:16,615 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:43:16,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:43:16,616 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:43:16,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:43:16,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:43:16,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:43:16,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:43:16,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:43:16,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:43:16,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:43:16,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:43:16,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:43:16,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:43:16,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:43:16,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:43:16,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:43:16,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:43:16,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:43:16,620 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_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 [2023-11-29 03:43:16,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:43:16,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:43:16,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:43:16,859 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:43:16,860 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:43:16,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2023-11-29 03:43:19,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:43:19,800 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:43:19,800 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2023-11-29 03:43:19,816 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/data/a62ad98b7/350b823c08c34636b0ce47580c85b448/FLAGf950a53ed [2023-11-29 03:43:19,827 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/data/a62ad98b7/350b823c08c34636b0ce47580c85b448 [2023-11-29 03:43:19,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:43:19,830 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:43:19,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:43:19,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:43:19,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:43:19,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:43:19" (1/1) ... [2023-11-29 03:43:19,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6ff9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:19, skipping insertion in model container [2023-11-29 03:43:19,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:43:19" (1/1) ... [2023-11-29 03:43:19,881 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:43:20,173 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_93577b9d-e8f1-4591-a874-1bb98473e09d/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2023-11-29 03:43:20,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:43:20,208 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:43:20,241 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_93577b9d-e8f1-4591-a874-1bb98473e09d/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2023-11-29 03:43:20,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:43:20,290 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:43:20,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20 WrapperNode [2023-11-29 03:43:20,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:43:20,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:43:20,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:43:20,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:43:20,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,313 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,336 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2023-11-29 03:43:20,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:43:20,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:43:20,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:43:20,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:43:20,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,368 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2023-11-29 03:43:20,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:43:20,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:43:20,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:43:20,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:43:20,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (1/1) ... [2023-11-29 03:43:20,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:43:20,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:20,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:43:20,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93577b9d-e8f1-4591-a874-1bb98473e09d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:43:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:43:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:43:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:43:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:43:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:43:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:43:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:43:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:43:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 03:43:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:43:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:43:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 03:43:20,456 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 03:43:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:43:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:43:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:43:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:43:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:43:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 03:43:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:43:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:43:20,458 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:43:20,587 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:43:20,588 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:43:20,805 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:43:20,943 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:43:20,944 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-29 03:43:20,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:43:20 BoogieIcfgContainer [2023-11-29 03:43:20,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:43:20,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:43:20,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:43:20,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:43:20,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:43:19" (1/3) ... [2023-11-29 03:43:20,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3075a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:43:20, skipping insertion in model container [2023-11-29 03:43:20,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:20" (2/3) ... [2023-11-29 03:43:20,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3075a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:43:20, skipping insertion in model container [2023-11-29 03:43:20,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:43:20" (3/3) ... [2023-11-29 03:43:20,967 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-11-29 03:43:20,975 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:43:20,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:43:20,998 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:43:20,998 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:43:21,040 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 03:43:21,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 78 transitions, 163 flow [2023-11-29 03:43:21,122 INFO L124 PetriNetUnfolderBase]: 26/116 cut-off events. [2023-11-29 03:43:21,122 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 03:43:21,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 26/116 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 398 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2023-11-29 03:43:21,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 78 transitions, 163 flow [2023-11-29 03:43:21,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 76 transitions, 156 flow [2023-11-29 03:43:21,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:43:21,150 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;@62f13dce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:43:21,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 03:43:21,158 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:43:21,158 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-11-29 03:43:21,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:43:21,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:43:21,159 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 03:43:21,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 03:43:21,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:21,165 INFO L85 PathProgramCache]: Analyzing trace with hash -622896217, now seen corresponding path program 1 times [2023-11-29 03:43:21,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:21,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165116343] [2023-11-29 03:43:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:21,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:43:21,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:43:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:43:21,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:43:21,354 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 03:43:21,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-29 03:43:21,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-29 03:43:21,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:43:21,358 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 03:43:21,361 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 03:43:21,361 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 03:43:21,391 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 03:43:21,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 114 transitions, 244 flow [2023-11-29 03:43:21,440 INFO L124 PetriNetUnfolderBase]: 44/197 cut-off events. [2023-11-29 03:43:21,440 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-29 03:43:21,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 197 events. 44/197 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 853 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 120. Up to 9 conditions per place. [2023-11-29 03:43:21,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 114 transitions, 244 flow [2023-11-29 03:43:21,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 114 transitions, 244 flow [2023-11-29 03:43:21,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:43:21,451 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;@62f13dce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:43:21,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 03:43:21,462 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:43:21,463 INFO L124 PetriNetUnfolderBase]: 9/57 cut-off events. [2023-11-29 03:43:21,463 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 03:43:21,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:43:21,463 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-29 03:43:21,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 03:43:21,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:21,464 INFO L85 PathProgramCache]: Analyzing trace with hash 358524951, now seen corresponding path program 1 times [2023-11-29 03:43:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:21,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910476650] [2023-11-29 03:43:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:21,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:43:21,500 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:43:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:43:21,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:43:21,534 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 03:43:21,535 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-29 03:43:21,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-29 03:43:21,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:43:21,536 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 03:43:21,536 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 03:43:21,537 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 03:43:21,572 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 03:43:21,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 150 transitions, 327 flow [2023-11-29 03:43:21,623 INFO L124 PetriNetUnfolderBase]: 65/289 cut-off events. [2023-11-29 03:43:21,624 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-11-29 03:43:21,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 289 events. 65/289 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1398 event pairs, 1 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 208. Up to 12 conditions per place. [2023-11-29 03:43:21,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 150 transitions, 327 flow [2023-11-29 03:43:21,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 150 transitions, 327 flow [2023-11-29 03:43:21,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:43:21,634 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;@62f13dce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:43:21,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 03:43:21,643 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:43:21,643 INFO L124 PetriNetUnfolderBase]: 9/69 cut-off events. [2023-11-29 03:43:21,643 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 03:43:21,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:43:21,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:21,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 03:43:21,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:21,644 INFO L85 PathProgramCache]: Analyzing trace with hash 661880435, now seen corresponding path program 1 times [2023-11-29 03:43:21,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:21,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647183636] [2023-11-29 03:43:21,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:21,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:21,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:21,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647183636] [2023-11-29 03:43:21,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647183636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:21,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:21,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:43:21,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532657809] [2023-11-29 03:43:21,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:21,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:43:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:21,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:43:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:43:21,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 150 [2023-11-29 03:43:21,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 150 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2023-11-29 03:43:21,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:43:21,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 150 [2023-11-29 03:43:21,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:43:44,909 INFO L124 PetriNetUnfolderBase]: 161208/266606 cut-off events. [2023-11-29 03:43:44,910 INFO L125 PetriNetUnfolderBase]: For 4889/4889 co-relation queries the response was YES. [2023-11-29 03:43:45,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487203 conditions, 266606 events. 161208/266606 cut-off events. For 4889/4889 co-relation queries the response was YES. Maximal size of possible extension queue 5632. Compared 2753500 event pairs, 100036 based on Foata normal form. 63712/316322 useless extension candidates. Maximal degree in co-relation 26830. Up to 219074 conditions per place. [2023-11-29 03:43:46,277 INFO L140 encePairwiseOnDemand]: 120/150 looper letters, 77 selfloop transitions, 2 changer transitions 1/138 dead transitions. [2023-11-29 03:43:46,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 138 transitions, 463 flow [2023-11-29 03:43:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:43:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:43:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-11-29 03:43:46,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2023-11-29 03:43:46,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-11-29 03:43:46,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-11-29 03:43:46,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:43:46,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-11-29 03:43:46,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-29 03:43:46,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-11-29 03:43:46,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-11-29 03:43:46,303 INFO L175 Difference]: Start difference. First operand has 124 places, 150 transitions, 327 flow. Second operand 3 states and 288 transitions. [2023-11-29 03:43:46,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 138 transitions, 463 flow [2023-11-29 03:43:46,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 138 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:43:46,316 INFO L231 Difference]: Finished difference. Result has 127 places, 123 transitions, 280 flow [2023-11-29 03:43:46,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2023-11-29 03:43:46,321 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, 3 predicate places. [2023-11-29 03:43:46,321 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 280 flow [2023-11-29 03:43:46,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2023-11-29 03:43:46,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:43:46,322 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-29 03:43:46,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:43:46,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 03:43:46,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash -213462138, now seen corresponding path program 1 times [2023-11-29 03:43:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:46,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963683394] [2023-11-29 03:43:46,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:46,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:43:46,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:43:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:43:46,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:43:46,388 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 03:43:46,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-29 03:43:46,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-29 03:43:46,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:43:46,389 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 03:43:46,389 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 03:43:46,389 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 03:43:46,430 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 03:43:46,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 186 transitions, 412 flow [2023-11-29 03:43:46,480 INFO L124 PetriNetUnfolderBase]: 94/405 cut-off events. [2023-11-29 03:43:46,480 INFO L125 PetriNetUnfolderBase]: For 48/54 co-relation queries the response was YES. [2023-11-29 03:43:46,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 405 events. 94/405 cut-off events. For 48/54 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2070 event pairs, 6 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 313. Up to 32 conditions per place. [2023-11-29 03:43:46,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 186 transitions, 412 flow [2023-11-29 03:43:46,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 186 transitions, 412 flow [2023-11-29 03:43:46,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:43:46,491 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;@62f13dce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:43:46,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 03:43:46,496 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:43:46,496 INFO L124 PetriNetUnfolderBase]: 9/69 cut-off events. [2023-11-29 03:43:46,496 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 03:43:46,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:43:46,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:46,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 03:43:46,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:46,497 INFO L85 PathProgramCache]: Analyzing trace with hash 302490157, now seen corresponding path program 1 times [2023-11-29 03:43:46,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028322128] [2023-11-29 03:43:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:46,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:46,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028322128] [2023-11-29 03:43:46,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028322128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:46,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:46,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:43:46,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162306584] [2023-11-29 03:43:46,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:46,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:43:46,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:43:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:43:46,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 186 [2023-11-29 03:43:46,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 186 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2023-11-29 03:43:46,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:43:46,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 186 [2023-11-29 03:43:46,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand