./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/01b_inc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/01b_inc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB --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 f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:24:13,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:24:13,293 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-28 04:24:13,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:24:13,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:24:13,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:24:13,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:24:13,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:24:13,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:24:13,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:24:13,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:24:13,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:24:13,339 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:24:13,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:24:13,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:24:13,339 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:24:13,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:24:13,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:24:13,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:24:13,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:24:13,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:24:13,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:24:13,340 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-28 04:24:13,340 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:24:13,342 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:24:13,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:24:13,343 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:24:13,343 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:24:13,343 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:24:13,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:24:13,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:24:13,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:24:13,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:24:13,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:24:13,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:24:13,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:24:13,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:24:13,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:24:13,346 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:24:13,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:24:13,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:24:13,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:24:13,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:24:13,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:24:13,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:24:13,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:24:13,347 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB 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 -> f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc [2024-11-28 04:24:13,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:24:13,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:24:13,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:24:13,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:24:13,753 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:24:13,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-28 04:24:17,240 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/data/2cdcb7be8/d5a9c59755af4d14964e0d6eb57564db/FLAG0f36c3000 [2024-11-28 04:24:17,586 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:24:17,589 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-28 04:24:17,604 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/data/2cdcb7be8/d5a9c59755af4d14964e0d6eb57564db/FLAG0f36c3000 [2024-11-28 04:24:17,622 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/data/2cdcb7be8/d5a9c59755af4d14964e0d6eb57564db [2024-11-28 04:24:17,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:24:17,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:24:17,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:24:17,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:24:17,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:24:17,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:24:17" (1/1) ... [2024-11-28 04:24:17,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521a7b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:17, skipping insertion in model container [2024-11-28 04:24:17,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:24:17" (1/1) ... [2024-11-28 04:24:17,698 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:24:18,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:24:18,125 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:24:18,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:24:18,220 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:24:18,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18 WrapperNode [2024-11-28 04:24:18,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:24:18,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:24:18,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:24:18,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:24:18,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,281 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-28 04:24:18,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:24:18,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:24:18,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:24:18,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:24:18,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,299 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,309 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:24:18,310 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:24:18,310 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:24:18,310 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:24:18,311 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (1/1) ... [2024-11-28 04:24:18,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:24:18,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:24:18,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:24:18,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012b92c2-a56b-4826-9056-94f1f04d4a31/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:24:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 04:24:18,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 04:24:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 04:24:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:24:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:24:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-28 04:24:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:24:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 04:24:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:24:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:24:18,392 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:24:18,537 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:24:18,540 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:24:18,784 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:24:18,784 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:24:18,883 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:24:18,887 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:24:18,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:24:18 BoogieIcfgContainer [2024-11-28 04:24:18,888 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:24:18,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:24:18,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:24:18,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:24:18,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:24:17" (1/3) ... [2024-11-28 04:24:18,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cffcfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:24:18, skipping insertion in model container [2024-11-28 04:24:18,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:18" (2/3) ... [2024-11-28 04:24:18,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cffcfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:24:18, skipping insertion in model container [2024-11-28 04:24:18,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:24:18" (3/3) ... [2024-11-28 04:24:18,904 INFO L128 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2024-11-28 04:24:18,929 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:24:18,931 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 01b_inc.i that has 2 procedures, 51 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2024-11-28 04:24:18,932 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:24:19,031 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:24:19,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 110 flow [2024-11-28 04:24:19,127 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-11-28 04:24:19,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:24:19,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 34. Up to 4 conditions per place. [2024-11-28 04:24:19,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 110 flow [2024-11-28 04:24:19,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 53 transitions, 110 flow [2024-11-28 04:24:19,159 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:24:19,183 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;@78480294, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:24:19,183 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-28 04:24:19,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:24:19,202 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-11-28 04:24:19,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:24:19,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:19,203 INFO L206 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] [2024-11-28 04:24:19,204 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-28 04:24:19,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:19,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1956507829, now seen corresponding path program 1 times [2024-11-28 04:24:19,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:19,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934694950] [2024-11-28 04:24:19,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:24:19,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:19,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934694950] [2024-11-28 04:24:19,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934694950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:19,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:19,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:24:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581439957] [2024-11-28 04:24:19,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:19,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:24:19,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:19,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:24:19,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:19,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 53 [2024-11-28 04:24:19,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-11-28 04:24:19,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:19,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 53 [2024-11-28 04:24:19,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:19,749 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-11-28 04:24:19,750 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:24:19,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 47 events. 1/47 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 11/57 useless extension candidates. Maximal degree in co-relation 34. Up to 6 conditions per place. [2024-11-28 04:24:19,754 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 7 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-28 04:24:19,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 112 flow [2024-11-28 04:24:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:24:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:24:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-28 04:24:19,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2024-11-28 04:24:19,778 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 110 flow. Second operand 3 states and 129 transitions. [2024-11-28 04:24:19,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 112 flow [2024-11-28 04:24:19,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 112 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:24:19,794 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 98 flow [2024-11-28 04:24:19,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-11-28 04:24:19,808 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2024-11-28 04:24:19,809 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 98 flow [2024-11-28 04:24:19,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-11-28 04:24:19,809 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:19,809 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:19,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:24:19,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-28 04:24:19,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:19,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1358521462, now seen corresponding path program 1 times [2024-11-28 04:24:19,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:19,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073710684] [2024-11-28 04:24:19,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:19,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:24:19,864 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:24:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:24:19,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:24:19,927 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:24:19,930 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-28 04:24:19,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-11-28 04:24:19,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-11-28 04:24:19,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-11-28 04:24:19,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-11-28 04:24:19,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-11-28 04:24:19,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-11-28 04:24:19,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-11-28 04:24:19,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-11-28 04:24:19,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:24:19,936 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 04:24:19,943 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:24:19,943 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 04:24:20,012 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:24:20,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 166 flow [2024-11-28 04:24:20,070 INFO L124 PetriNetUnfolderBase]: 5/96 cut-off events. [2024-11-28 04:24:20,070 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:24:20,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 96 events. 5/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2024-11-28 04:24:20,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 166 flow [2024-11-28 04:24:20,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 78 transitions, 166 flow [2024-11-28 04:24:20,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:24:20,078 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;@78480294, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:24:20,078 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-28 04:24:20,097 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:24:20,098 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-11-28 04:24:20,098 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:24:20,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:20,098 INFO L206 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] [2024-11-28 04:24:20,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-28 04:24:20,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:20,099 INFO L85 PathProgramCache]: Analyzing trace with hash 493412337, now seen corresponding path program 1 times [2024-11-28 04:24:20,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:20,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624152628] [2024-11-28 04:24:20,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:20,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:24:20,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:20,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624152628] [2024-11-28 04:24:20,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624152628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:20,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:20,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:24:20,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670834880] [2024-11-28 04:24:20,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:20,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:24:20,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:20,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:24:20,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:20,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 78 [2024-11-28 04:24:20,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-11-28 04:24:20,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:20,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 78 [2024-11-28 04:24:20,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:20,534 INFO L124 PetriNetUnfolderBase]: 128/438 cut-off events. [2024-11-28 04:24:20,534 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-28 04:24:20,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 438 events. 128/438 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2285 event pairs, 45 based on Foata normal form. 147/562 useless extension candidates. Maximal degree in co-relation 623. Up to 184 conditions per place. [2024-11-28 04:24:20,543 INFO L140 encePairwiseOnDemand]: 56/78 looper letters, 31 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-11-28 04:24:20,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 277 flow [2024-11-28 04:24:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:24:20,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:24:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2024-11-28 04:24:20,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8675213675213675 [2024-11-28 04:24:20,546 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 166 flow. Second operand 3 states and 203 transitions. [2024-11-28 04:24:20,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 88 transitions, 277 flow [2024-11-28 04:24:20,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 88 transitions, 277 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:24:20,550 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 252 flow [2024-11-28 04:24:20,551 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-11-28 04:24:20,552 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -4 predicate places. [2024-11-28 04:24:20,552 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 252 flow [2024-11-28 04:24:20,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-11-28 04:24:20,552 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:20,552 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:20,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:24:20,553 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-28 04:24:20,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:20,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1117310756, now seen corresponding path program 1 times [2024-11-28 04:24:20,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:20,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888017641] [2024-11-28 04:24:20,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:20,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:24:20,576 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:24:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:24:20,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:24:20,607 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:24:20,608 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-28 04:24:20,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-11-28 04:24:20,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-11-28 04:24:20,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-11-28 04:24:20,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-11-28 04:24:20,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-11-28 04:24:20,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-11-28 04:24:20,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-11-28 04:24:20,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-11-28 04:24:20,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-11-28 04:24:20,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-11-28 04:24:20,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-11-28 04:24:20,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-11-28 04:24:20,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:24:20,610 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 04:24:20,617 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:24:20,617 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 04:24:20,676 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:24:20,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 103 transitions, 224 flow [2024-11-28 04:24:20,739 INFO L124 PetriNetUnfolderBase]: 7/131 cut-off events. [2024-11-28 04:24:20,739 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 04:24:20,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 7/131 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 316 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2024-11-28 04:24:20,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 103 transitions, 224 flow [2024-11-28 04:24:20,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 103 transitions, 224 flow [2024-11-28 04:24:20,743 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:24:20,744 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;@78480294, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:24:20,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-28 04:24:20,751 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:24:20,751 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-11-28 04:24:20,751 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:24:20,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:20,751 INFO L206 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] [2024-11-28 04:24:20,751 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-28 04:24:20,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2021049104, now seen corresponding path program 1 times [2024-11-28 04:24:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:20,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465590317] [2024-11-28 04:24:20,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:20,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:24:20,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465590317] [2024-11-28 04:24:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465590317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:20,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:24:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048262780] [2024-11-28 04:24:20,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:20,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:24:20,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:20,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:24:20,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:20,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 103 [2024-11-28 04:24:20,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2024-11-28 04:24:20,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:20,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 103 [2024-11-28 04:24:20,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:22,480 INFO L124 PetriNetUnfolderBase]: 3441/7377 cut-off events. [2024-11-28 04:24:22,480 INFO L125 PetriNetUnfolderBase]: For 850/850 co-relation queries the response was YES. [2024-11-28 04:24:22,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13286 conditions, 7377 events. 3441/7377 cut-off events. For 850/850 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 63262 event pairs, 1354 based on Foata normal form. 2065/8990 useless extension candidates. Maximal degree in co-relation 11739. Up to 3764 conditions per place. [2024-11-28 04:24:22,554 INFO L140 encePairwiseOnDemand]: 71/103 looper letters, 47 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-11-28 04:24:22,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 121 transitions, 402 flow [2024-11-28 04:24:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:24:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:24:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2024-11-28 04:24:22,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8543689320388349 [2024-11-28 04:24:22,556 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 224 flow. Second operand 3 states and 264 transitions. [2024-11-28 04:24:22,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 121 transitions, 402 flow [2024-11-28 04:24:22,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 121 transitions, 398 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-28 04:24:22,563 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 356 flow [2024-11-28 04:24:22,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2024-11-28 04:24:22,566 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -6 predicate places. [2024-11-28 04:24:22,566 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 356 flow [2024-11-28 04:24:22,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2024-11-28 04:24:22,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:22,567 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:22,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:24:22,567 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-28 04:24:22,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash -688656660, now seen corresponding path program 1 times [2024-11-28 04:24:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:22,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576109046] [2024-11-28 04:24:22,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:22,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:24:22,599 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:24:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:24:22,635 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:24:22,635 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:24:22,635 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-28 04:24:22,635 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-11-28 04:24:22,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-11-28 04:24:22,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-11-28 04:24:22,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-11-28 04:24:22,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-11-28 04:24:22,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-11-28 04:24:22,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-11-28 04:24:22,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-11-28 04:24:22,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-11-28 04:24:22,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-11-28 04:24:22,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-11-28 04:24:22,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-11-28 04:24:22,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-11-28 04:24:22,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-11-28 04:24:22,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-11-28 04:24:22,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-11-28 04:24:22,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:24:22,637 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 04:24:22,640 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:24:22,640 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 04:24:22,762 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:24:22,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 128 transitions, 284 flow [2024-11-28 04:24:22,788 INFO L124 PetriNetUnfolderBase]: 9/166 cut-off events. [2024-11-28 04:24:22,788 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 04:24:22,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 166 events. 9/166 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 457 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 139. Up to 10 conditions per place. [2024-11-28 04:24:22,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 128 transitions, 284 flow [2024-11-28 04:24:22,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 128 transitions, 284 flow [2024-11-28 04:24:22,795 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:24:22,798 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;@78480294, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:24:22,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-28 04:24:22,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:24:22,803 INFO L124 PetriNetUnfolderBase]: 2/42 cut-off events. [2024-11-28 04:24:22,803 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:24:22,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:22,804 INFO L206 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] [2024-11-28 04:24:22,804 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-28 04:24:22,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash -248558936, now seen corresponding path program 1 times [2024-11-28 04:24:22,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:22,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213811418] [2024-11-28 04:24:22,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:22,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:24:22,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:22,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213811418] [2024-11-28 04:24:22,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213811418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:22,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:22,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:24:22,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29449041] [2024-11-28 04:24:22,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:22,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:24:22,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:22,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:24:22,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:22,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2024-11-28 04:24:22,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 128 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2024-11-28 04:24:22,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:22,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2024-11-28 04:24:22,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:36,997 INFO L124 PetriNetUnfolderBase]: 69759/122181 cut-off events. [2024-11-28 04:24:36,997 INFO L125 PetriNetUnfolderBase]: For 20033/20033 co-relation queries the response was YES. [2024-11-28 04:24:37,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228087 conditions, 122181 events. 69759/122181 cut-off events. For 20033/20033 co-relation queries the response was YES. Maximal size of possible extension queue 4668. Compared 1270303 event pairs, 29205 based on Foata normal form. 28337/142055 useless extension candidates. Maximal degree in co-relation 201380. Up to 66562 conditions per place. [2024-11-28 04:24:38,174 INFO L140 encePairwiseOnDemand]: 86/128 looper letters, 63 selfloop transitions, 24 changer transitions 0/154 dead transitions. [2024-11-28 04:24:38,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 154 transitions, 531 flow [2024-11-28 04:24:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:24:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:24:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2024-11-28 04:24:38,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8463541666666666 [2024-11-28 04:24:38,178 INFO L175 Difference]: Start difference. First operand has 132 places, 128 transitions, 284 flow. Second operand 3 states and 325 transitions. [2024-11-28 04:24:38,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 154 transitions, 531 flow [2024-11-28 04:24:38,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 154 transitions, 519 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-28 04:24:38,196 INFO L231 Difference]: Finished difference. Result has 124 places, 139 transitions, 460 flow [2024-11-28 04:24:38,197 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=124, PETRI_TRANSITIONS=139} [2024-11-28 04:24:38,201 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -8 predicate places. [2024-11-28 04:24:38,201 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 139 transitions, 460 flow [2024-11-28 04:24:38,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2024-11-28 04:24:38,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:38,202 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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] [2024-11-28 04:24:38,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:24:38,203 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-28 04:24:38,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash -394105582, now seen corresponding path program 1 times [2024-11-28 04:24:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344845521] [2024-11-28 04:24:38,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:38,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:24:38,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:38,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344845521] [2024-11-28 04:24:38,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344845521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:38,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:38,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:24:38,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858879411] [2024-11-28 04:24:38,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:38,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:24:38,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:38,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:24:38,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:38,492 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 128 [2024-11-28 04:24:38,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 139 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2024-11-28 04:24:38,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:38,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 128 [2024-11-28 04:24:38,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:39,475 INFO L124 PetriNetUnfolderBase]: 2795/8892 cut-off events. [2024-11-28 04:24:39,476 INFO L125 PetriNetUnfolderBase]: For 4447/4447 co-relation queries the response was YES. [2024-11-28 04:24:39,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19033 conditions, 8892 events. 2795/8892 cut-off events. For 4447/4447 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 92164 event pairs, 941 based on Foata normal form. 842/9551 useless extension candidates. Maximal degree in co-relation 18932. Up to 3515 conditions per place. [2024-11-28 04:24:39,537 INFO L140 encePairwiseOnDemand]: 116/128 looper letters, 28 selfloop transitions, 12 changer transitions 0/126 dead transitions. [2024-11-28 04:24:39,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 126 transitions, 481 flow [2024-11-28 04:24:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:24:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:24:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2024-11-28 04:24:39,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2024-11-28 04:24:39,539 INFO L175 Difference]: Start difference. First operand has 124 places, 139 transitions, 460 flow. Second operand 3 states and 315 transitions. [2024-11-28 04:24:39,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 126 transitions, 481 flow [2024-11-28 04:24:39,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 126 transitions, 449 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:24:39,554 INFO L231 Difference]: Finished difference. Result has 116 places, 115 transitions, 340 flow [2024-11-28 04:24:39,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=116, PETRI_TRANSITIONS=115} [2024-11-28 04:24:39,556 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -16 predicate places. [2024-11-28 04:24:39,556 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 115 transitions, 340 flow [2024-11-28 04:24:39,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2024-11-28 04:24:39,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:39,556 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:39,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:24:39,562 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-28 04:24:39,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1412535354, now seen corresponding path program 1 times [2024-11-28 04:24:39,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:39,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862674978] [2024-11-28 04:24:39,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:39,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:24:39,595 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:24:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:24:39,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:24:39,632 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:24:39,632 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-28 04:24:39,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-11-28 04:24:39,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-11-28 04:24:39,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-11-28 04:24:39,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-11-28 04:24:39,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-11-28 04:24:39,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-11-28 04:24:39,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-11-28 04:24:39,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-11-28 04:24:39,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-11-28 04:24:39,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-11-28 04:24:39,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-11-28 04:24:39,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-11-28 04:24:39,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-11-28 04:24:39,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-11-28 04:24:39,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-11-28 04:24:39,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-11-28 04:24:39,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-11-28 04:24:39,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-11-28 04:24:39,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-11-28 04:24:39,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-11-28 04:24:39,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:24:39,635 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 04:24:39,636 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:24:39,636 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-28 04:24:39,705 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:24:39,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 153 transitions, 346 flow [2024-11-28 04:24:39,729 INFO L124 PetriNetUnfolderBase]: 11/201 cut-off events. [2024-11-28 04:24:39,730 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 04:24:39,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 201 events. 11/201 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 591 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2024-11-28 04:24:39,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 153 transitions, 346 flow [2024-11-28 04:24:39,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 153 transitions, 346 flow [2024-11-28 04:24:39,734 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:24:39,736 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;@78480294, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:24:39,736 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-28 04:24:39,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:24:39,738 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-11-28 04:24:39,738 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:24:39,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:39,739 INFO L206 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] [2024-11-28 04:24:39,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 04:24:39,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:39,740 INFO L85 PathProgramCache]: Analyzing trace with hash 144513977, now seen corresponding path program 1 times [2024-11-28 04:24:39,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:39,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166933453] [2024-11-28 04:24:39,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:24:39,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:39,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166933453] [2024-11-28 04:24:39,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166933453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:39,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:24:39,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859193650] [2024-11-28 04:24:39,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:39,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:24:39,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:39,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:24:39,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:39,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 153 [2024-11-28 04:24:39,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2024-11-28 04:24:39,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:39,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 153 [2024-11-28 04:24:39,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand