./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a 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_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:21,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:21,740 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:17:21,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:21,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:21,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:21,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:21,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:21,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:17:21,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:17:21,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:21,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:21,792 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:21,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:21,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:17:21,795 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:17:21,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:21,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:17:21,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:21,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:17:21,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:17:21,801 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:17:21,802 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:17:21,802 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:21,802 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:17:21,803 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:17:21,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:17:21,804 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:21,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:21,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:21,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:17:21,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:21,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:21,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:17:21,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:17:21,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:21,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:17:21,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:17:21,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:17:21,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:17:21,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:17:21,810 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_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb [2024-10-31 22:17:22,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:22,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:22,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:22,146 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:22,147 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:22,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i Unable to find full path for "g++" [2024-10-31 22:17:24,193 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:17:24,475 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:17:24,476 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2024-10-31 22:17:24,506 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/data/93acfe6fc/7a761268b65b4d4996f66ae728bbdbd4/FLAGdb78b95bd [2024-10-31 22:17:24,527 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/data/93acfe6fc/7a761268b65b4d4996f66ae728bbdbd4 [2024-10-31 22:17:24,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:17:24,533 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:17:24,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:24,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:17:24,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:17:24,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:24" (1/1) ... [2024-10-31 22:17:24,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c7b271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:24, skipping insertion in model container [2024-10-31 22:17:24,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:24" (1/1) ... [2024-10-31 22:17:24,627 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:25,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:25,208 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:25,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:25,357 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:25,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25 WrapperNode [2024-10-31 22:17:25,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:25,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:25,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:25,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:25,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,483 INFO L138 Inliner]: procedures = 174, calls = 89, calls flagged for inlining = 21, calls inlined = 37, statements flattened = 907 [2024-10-31 22:17:25,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:25,486 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:25,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:25,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:25,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:25,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:25,671 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:25,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:25,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (1/1) ... [2024-10-31 22:17:25,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:25,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:25,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:25,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883bf4b9-af3c-40b1-a01e-0a3d4f279e17/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:17:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:17:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:17:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2024-10-31 22:17:25,781 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2024-10-31 22:17:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-10-31 22:17:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:17:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-10-31 22:17:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:17:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:17:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:17:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:25,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:25,787 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:17:26,032 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:26,034 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:27,704 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:17:27,705 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:27,783 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:27,783 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-31 22:17:27,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:27 BoogieIcfgContainer [2024-10-31 22:17:27,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:27,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:17:27,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:17:27,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:17:27,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:17:24" (1/3) ... [2024-10-31 22:17:27,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afa7c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:27, skipping insertion in model container [2024-10-31 22:17:27,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:25" (2/3) ... [2024-10-31 22:17:27,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afa7c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:27, skipping insertion in model container [2024-10-31 22:17:27,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:27" (3/3) ... [2024-10-31 22:17:27,795 INFO L112 eAbstractionObserver]: Analyzing ICFG one_time_barrier_twice_2t.i [2024-10-31 22:17:27,818 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:17:27,818 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2024-10-31 22:17:27,819 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:17:28,117 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:17:28,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 976 places, 1064 transitions, 2135 flow [2024-10-31 22:17:29,278 INFO L124 PetriNetUnfolderBase]: 137/1564 cut-off events. [2024-10-31 22:17:29,279 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:17:29,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 1564 events. 137/1564 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 5619 event pairs, 0 based on Foata normal form. 0/1307 useless extension candidates. Maximal degree in co-relation 926. Up to 4 conditions per place. [2024-10-31 22:17:29,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 976 places, 1064 transitions, 2135 flow [2024-10-31 22:17:29,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 976 places, 1064 transitions, 2135 flow [2024-10-31 22:17:29,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:29,385 INFO L333 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, 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;@53975404, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:29,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 114 error locations. [2024-10-31 22:17:29,393 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:17:29,393 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2024-10-31 22:17:29,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:29,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:29,395 INFO L204 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] [2024-10-31 22:17:29,395 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 111 more)] === [2024-10-31 22:17:29,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:29,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1719574130, now seen corresponding path program 1 times [2024-10-31 22:17:29,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:29,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680676116] [2024-10-31 22:17:29,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:29,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:30,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:30,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680676116] [2024-10-31 22:17:30,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680676116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:30,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:30,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:17:30,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927034098] [2024-10-31 22:17:30,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:30,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:17:30,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:30,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:17:30,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:17:33,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 1064 [2024-10-31 22:17:33,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 976 places, 1064 transitions, 2135 flow. Second operand has 6 states, 6 states have (on average 748.5) internal successors, (4491), 6 states have internal predecessors, (4491), 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) [2024-10-31 22:17:33,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:33,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 1064 [2024-10-31 22:17:33,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:50,460 INFO L124 PetriNetUnfolderBase]: 12711/59643 cut-off events. [2024-10-31 22:17:50,460 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2024-10-31 22:17:50,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83052 conditions, 59643 events. 12711/59643 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 694748 event pairs, 11413 based on Foata normal form. 7003/59475 useless extension candidates. Maximal degree in co-relation 82324. Up to 23399 conditions per place. [2024-10-31 22:17:50,788 INFO L140 encePairwiseOnDemand]: 986/1064 looper letters, 239 selfloop transitions, 5 changer transitions 6/963 dead transitions. [2024-10-31 22:17:50,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 952 places, 963 transitions, 2421 flow [2024-10-31 22:17:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:17:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4799 transitions. [2024-10-31 22:17:50,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7517230576441103 [2024-10-31 22:17:50,831 INFO L175 Difference]: Start difference. First operand has 976 places, 1064 transitions, 2135 flow. Second operand 6 states and 4799 transitions. [2024-10-31 22:17:50,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 952 places, 963 transitions, 2421 flow [2024-10-31 22:17:50,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 952 places, 963 transitions, 2421 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:17:50,871 INFO L231 Difference]: Finished difference. Result has 952 places, 957 transitions, 1931 flow [2024-10-31 22:17:50,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=958, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1931, PETRI_PLACES=952, PETRI_TRANSITIONS=957} [2024-10-31 22:17:50,880 INFO L277 CegarLoopForPetriNet]: 976 programPoint places, -24 predicate places. [2024-10-31 22:17:50,880 INFO L471 AbstractCegarLoop]: Abstraction has has 952 places, 957 transitions, 1931 flow [2024-10-31 22:17:50,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 748.5) internal successors, (4491), 6 states have internal predecessors, (4491), 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) [2024-10-31 22:17:50,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:50,886 INFO L204 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] [2024-10-31 22:17:50,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:17:50,887 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 111 more)] === [2024-10-31 22:17:50,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:50,890 INFO L85 PathProgramCache]: Analyzing trace with hash -247392740, now seen corresponding path program 1 times [2024-10-31 22:17:50,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:50,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577897259] [2024-10-31 22:17:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:50,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577897259] [2024-10-31 22:17:51,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577897259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:51,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:51,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:51,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380433412] [2024-10-31 22:17:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:51,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:51,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:51,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:51,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:51,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 964 out of 1064 [2024-10-31 22:17:51,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 957 transitions, 1931 flow. Second operand has 3 states, 3 states have (on average 965.3333333333334) internal successors, (2896), 3 states have internal predecessors, (2896), 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) [2024-10-31 22:17:51,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:51,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 964 of 1064 [2024-10-31 22:17:51,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:52,816 INFO L124 PetriNetUnfolderBase]: 247/4823 cut-off events. [2024-10-31 22:17:52,817 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:17:52,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5146 conditions, 4823 events. 247/4823 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 36047 event pairs, 110 based on Foata normal form. 1/4162 useless extension candidates. Maximal degree in co-relation 5062. Up to 306 conditions per place. [2024-10-31 22:17:52,860 INFO L140 encePairwiseOnDemand]: 1061/1064 looper letters, 27 selfloop transitions, 2 changer transitions 0/958 dead transitions. [2024-10-31 22:17:52,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 958 transitions, 1991 flow [2024-10-31 22:17:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2922 transitions. [2024-10-31 22:17:52,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9154135338345865 [2024-10-31 22:17:52,868 INFO L175 Difference]: Start difference. First operand has 952 places, 957 transitions, 1931 flow. Second operand 3 states and 2922 transitions. [2024-10-31 22:17:52,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 958 transitions, 1991 flow [2024-10-31 22:17:52,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 943 places, 958 transitions, 1981 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:17:52,886 INFO L231 Difference]: Finished difference. Result has 944 places, 958 transitions, 1933 flow [2024-10-31 22:17:52,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=955, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1933, PETRI_PLACES=944, PETRI_TRANSITIONS=958} [2024-10-31 22:17:52,889 INFO L277 CegarLoopForPetriNet]: 976 programPoint places, -32 predicate places. [2024-10-31 22:17:52,889 INFO L471 AbstractCegarLoop]: Abstraction has has 944 places, 958 transitions, 1933 flow [2024-10-31 22:17:52,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 965.3333333333334) internal successors, (2896), 3 states have internal predecessors, (2896), 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) [2024-10-31 22:17:52,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:52,891 INFO L204 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] [2024-10-31 22:17:52,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:17:52,892 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 111 more)] === [2024-10-31 22:17:52,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:52,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2111940816, now seen corresponding path program 1 times [2024-10-31 22:17:52,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:52,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263691493] [2024-10-31 22:17:52,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:52,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:53,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:53,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263691493] [2024-10-31 22:17:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263691493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:53,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:53,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:17:53,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127246311] [2024-10-31 22:17:53,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:53,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:17:53,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:53,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:17:53,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30