./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/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_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/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_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/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 16b049fb81e05ec2192b5dc6cabf7c8b89c1486d4e623332a0a01a89383c6c7d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:15:08,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:15:09,078 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:15:09,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:15:09,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:15:09,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:15:09,129 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:15:09,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:15:09,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:15:09,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:15:09,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:15:09,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:15:09,134 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:15:09,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:15:09,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:15:09,137 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:15:09,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:15:09,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:15:09,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:15:09,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:15:09,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:15:09,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:15:09,144 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:15:09,144 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:15:09,145 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:15:09,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:15:09,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:15:09,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:15:09,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:15:09,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:15:09,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:15:09,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:09,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:15:09,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:15:09,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:15:09,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:15:09,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:15:09,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:15:09,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:15:09,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:15:09,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:15:09,150 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_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16b049fb81e05ec2192b5dc6cabf7c8b89c1486d4e623332a0a01a89383c6c7d [2024-10-31 22:15:09,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:15:09,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:15:09,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:15:09,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:15:09,496 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:15:09,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i Unable to find full path for "g++" [2024-10-31 22:15:11,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:15:12,070 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:15:12,071 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i [2024-10-31 22:15:12,094 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU/data/2882b2bc0/9c41b8c33f8e47bea863cd0e4f4257e6/FLAGb5d025dc6 [2024-10-31 22:15:12,116 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU/data/2882b2bc0/9c41b8c33f8e47bea863cd0e4f4257e6 [2024-10-31 22:15:12,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:15:12,123 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:15:12,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:12,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:15:12,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:15:12,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:12,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322c3507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12, skipping insertion in model container [2024-10-31 22:15:12,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:12,206 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:15:12,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:12,873 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:15:12,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:12,999 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:15:12,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12 WrapperNode [2024-10-31 22:15:13,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:13,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:13,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:15:13,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:15:13,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,119 INFO L138 Inliner]: procedures = 174, calls = 86, calls flagged for inlining = 20, calls inlined = 35, statements flattened = 881 [2024-10-31 22:15:13,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:13,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:15:13,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:15:13,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:15:13,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,144 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:15:13,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:15:13,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:15:13,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:15:13,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (1/1) ... [2024-10-31 22:15:13,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:13,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:13,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:15:13,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29d537ed-1bc3-4d07-b8fe-deaf194ae6f4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:15:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:15:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:15:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:15:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2024-10-31 22:15:13,322 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2024-10-31 22:15:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:15:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-10-31 22:15:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:15:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-10-31 22:15:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:15:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:15:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:15:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:15:13,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:15:13,326 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 22:15:13,565 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:15:13,567 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:15:15,203 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:15:15,204 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:15:15,262 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:15:15,262 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-31 22:15:15,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:15 BoogieIcfgContainer [2024-10-31 22:15:15,266 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:15:15,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:15:15,269 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:15:15,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:15:15,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:15:12" (1/3) ... [2024-10-31 22:15:15,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66852699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:15, skipping insertion in model container [2024-10-31 22:15:15,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:12" (2/3) ... [2024-10-31 22:15:15,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66852699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:15, skipping insertion in model container [2024-10-31 22:15:15,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:15" (3/3) ... [2024-10-31 22:15:15,275 INFO L112 eAbstractionObserver]: Analyzing ICFG one_time_barrier_2t.i [2024-10-31 22:15:15,294 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:15:15,295 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2024-10-31 22:15:15,295 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:15:15,544 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:15:15,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 944 places, 1030 transitions, 2067 flow [2024-10-31 22:15:16,571 INFO L124 PetriNetUnfolderBase]: 135/1528 cut-off events. [2024-10-31 22:15:16,572 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:15:16,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 1528 events. 135/1528 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 5611 event pairs, 0 based on Foata normal form. 0/1275 useless extension candidates. Maximal degree in co-relation 924. Up to 4 conditions per place. [2024-10-31 22:15:16,620 INFO L82 GeneralOperation]: Start removeDead. Operand has 944 places, 1030 transitions, 2067 flow [2024-10-31 22:15:16,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 944 places, 1030 transitions, 2067 flow [2024-10-31 22:15:16,669 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:16,678 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;@548cb625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:16,678 INFO L334 AbstractCegarLoop]: Starting to check reachability of 112 error locations. [2024-10-31 22:15:16,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:16,687 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2024-10-31 22:15:16,687 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:16,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:16,688 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 22:15:16,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 109 more)] === [2024-10-31 22:15:16,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:16,696 INFO L85 PathProgramCache]: Analyzing trace with hash 600619363, now seen corresponding path program 1 times [2024-10-31 22:15:16,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:16,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482830719] [2024-10-31 22:15:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:16,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:17,934 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 22:15:17,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:17,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482830719] [2024-10-31 22:15:17,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482830719] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:17,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:17,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:15:17,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225984972] [2024-10-31 22:15:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:17,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:15:17,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:15:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:15:20,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 723 out of 1030 [2024-10-31 22:15:20,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 944 places, 1030 transitions, 2067 flow. Second operand has 6 states, 6 states have (on average 724.5) internal successors, (4347), 6 states have internal predecessors, (4347), 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 22:15:20,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:20,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 723 of 1030 [2024-10-31 22:15:20,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:37,516 INFO L124 PetriNetUnfolderBase]: 12711/59452 cut-off events. [2024-10-31 22:15:37,516 INFO L125 PetriNetUnfolderBase]: For 4/7 co-relation queries the response was YES. [2024-10-31 22:15:37,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82853 conditions, 59452 events. 12711/59452 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 692004 event pairs, 11413 based on Foata normal form. 7001/59285 useless extension candidates. Maximal degree in co-relation 82164. Up to 23391 conditions per place. [2024-10-31 22:15:37,953 INFO L140 encePairwiseOnDemand]: 954/1030 looper letters, 231 selfloop transitions, 5 changer transitions 3/932 dead transitions. [2024-10-31 22:15:37,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 921 places, 932 transitions, 2343 flow [2024-10-31 22:15:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:15:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:15:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4645 transitions. [2024-10-31 22:15:37,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7516181229773463 [2024-10-31 22:15:37,990 INFO L175 Difference]: Start difference. First operand has 944 places, 1030 transitions, 2067 flow. Second operand 6 states and 4645 transitions. [2024-10-31 22:15:37,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 921 places, 932 transitions, 2343 flow [2024-10-31 22:15:38,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 932 transitions, 2343 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:15:38,022 INFO L231 Difference]: Finished difference. Result has 921 places, 929 transitions, 1875 flow [2024-10-31 22:15:38,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=916, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=932, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1875, PETRI_PLACES=921, PETRI_TRANSITIONS=929} [2024-10-31 22:15:38,029 INFO L277 CegarLoopForPetriNet]: 944 programPoint places, -23 predicate places. [2024-10-31 22:15:38,033 INFO L471 AbstractCegarLoop]: Abstraction has has 921 places, 929 transitions, 1875 flow [2024-10-31 22:15:38,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 724.5) internal successors, (4347), 6 states have internal predecessors, (4347), 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 22:15:38,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:38,037 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 22:15:38,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:15:38,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 109 more)] === [2024-10-31 22:15:38,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:38,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1490572193, now seen corresponding path program 1 times [2024-10-31 22:15:38,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:38,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240100461] [2024-10-31 22:15:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:38,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:38,113 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 22:15:38,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:38,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240100461] [2024-10-31 22:15:38,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240100461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:38,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:38,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:38,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241054704] [2024-10-31 22:15:38,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:38,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:38,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 932 out of 1030 [2024-10-31 22:15:38,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 921 places, 929 transitions, 1875 flow. Second operand has 3 states, 3 states have (on average 933.3333333333334) internal successors, (2800), 3 states have internal predecessors, (2800), 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 22:15:38,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:38,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 932 of 1030 [2024-10-31 22:15:38,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:39,894 INFO L124 PetriNetUnfolderBase]: 247/4793 cut-off events. [2024-10-31 22:15:39,894 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:15:39,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5116 conditions, 4793 events. 247/4793 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 36256 event pairs, 110 based on Foata normal form. 1/4134 useless extension candidates. Maximal degree in co-relation 5032. Up to 306 conditions per place. [2024-10-31 22:15:39,944 INFO L140 encePairwiseOnDemand]: 1027/1030 looper letters, 27 selfloop transitions, 2 changer transitions 0/930 dead transitions. [2024-10-31 22:15:39,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 930 transitions, 1935 flow [2024-10-31 22:15:39,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:39,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2826 transitions. [2024-10-31 22:15:39,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9145631067961165 [2024-10-31 22:15:39,953 INFO L175 Difference]: Start difference. First operand has 921 places, 929 transitions, 1875 flow. Second operand 3 states and 2826 transitions. [2024-10-31 22:15:39,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 930 transitions, 1935 flow [2024-10-31 22:15:39,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 915 places, 930 transitions, 1925 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:15:39,980 INFO L231 Difference]: Finished difference. Result has 916 places, 930 transitions, 1877 flow [2024-10-31 22:15:39,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=913, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1877, PETRI_PLACES=916, PETRI_TRANSITIONS=930} [2024-10-31 22:15:39,982 INFO L277 CegarLoopForPetriNet]: 944 programPoint places, -28 predicate places. [2024-10-31 22:15:39,983 INFO L471 AbstractCegarLoop]: Abstraction has has 916 places, 930 transitions, 1877 flow [2024-10-31 22:15:39,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 933.3333333333334) internal successors, (2800), 3 states have internal predecessors, (2800), 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 22:15:39,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:39,986 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 22:15:39,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:15:39,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 109 more)] === [2024-10-31 22:15:39,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:39,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2108364158, now seen corresponding path program 1 times [2024-10-31 22:15:39,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:39,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300693465] [2024-10-31 22:15:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:40,572 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 22:15:40,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:40,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300693465] [2024-10-31 22:15:40,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300693465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:40,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:40,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:15:40,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129911991] [2024-10-31 22:15:40,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:40,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:15:40,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:40,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:15:40,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30