./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya --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 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:22:56,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:22:56,497 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 01:22:56,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:22:56,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:22:56,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:22:56,525 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:22:56,526 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:22:56,527 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:22:56,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:22:56,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:22:56,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:22:56,529 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:22:56,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:22:56,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:22:56,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:22:56,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:22:56,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:22:56,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:22:56,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:22:56,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:22:56,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:22:56,534 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 01:22:56,534 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:22:56,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:22:56,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:22:56,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:22:56,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:22:56,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:22:56,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:22:56,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:22:56,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:22:56,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:22:56,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:22:56,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:22:56,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:22:56,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:22:56,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:22:56,540 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:22:56,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:22:56,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:22:56,541 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_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 [2023-11-29 01:22:56,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:22:56,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:22:56,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:22:56,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:22:56,781 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:22:56,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2023-11-29 01:22:59,513 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:22:59,775 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:22:59,776 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2023-11-29 01:22:59,791 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/data/3596e94f6/40c9a609f81f485ea9febcb2f531b75a/FLAG29f53bffa [2023-11-29 01:22:59,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/data/3596e94f6/40c9a609f81f485ea9febcb2f531b75a [2023-11-29 01:22:59,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:22:59,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:22:59,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:22:59,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:22:59,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:22:59,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:22:59" (1/1) ... [2023-11-29 01:22:59,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27be573a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:59, skipping insertion in model container [2023-11-29 01:22:59,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:22:59" (1/1) ... [2023-11-29 01:22:59,863 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:23:00,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:23:00,184 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:23:00,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:23:00,253 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:23:00,253 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:23:00,261 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:23:00,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00 WrapperNode [2023-11-29 01:23:00,262 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:23:00,263 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:23:00,263 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:23:00,263 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:23:00,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,305 INFO L138 Inliner]: procedures = 170, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-11-29 01:23:00,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:23:00,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:23:00,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:23:00,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:23:00,316 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:23:00,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:23:00,335 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:23:00,335 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:23:00,336 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (1/1) ... [2023-11-29 01:23:00,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:23:00,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:00,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:23:00,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451a9379-6730-4250-b27f-407b5ef41731/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:23:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 01:23:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 01:23:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 01:23:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:23:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:23:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:23:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:23:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 01:23:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:23:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:23:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:23:00,401 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:23:00,523 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:23:00,526 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:23:00,637 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:23:00,673 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:23:00,674 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:23:00,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:23:00 BoogieIcfgContainer [2023-11-29 01:23:00,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:23:00,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:23:00,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:23:00,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:23:00,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:22:59" (1/3) ... [2023-11-29 01:23:00,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467defb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:23:00, skipping insertion in model container [2023-11-29 01:23:00,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:00" (2/3) ... [2023-11-29 01:23:00,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467defb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:23:00, skipping insertion in model container [2023-11-29 01:23:00,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:23:00" (3/3) ... [2023-11-29 01:23:00,685 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2023-11-29 01:23:00,694 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:23:00,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:23:00,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-29 01:23:00,705 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:23:00,744 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:23:00,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 96 flow [2023-11-29 01:23:00,806 INFO L124 PetriNetUnfolderBase]: 2/57 cut-off events. [2023-11-29 01:23:00,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:00,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 30. Up to 4 conditions per place. [2023-11-29 01:23:00,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 46 transitions, 96 flow [2023-11-29 01:23:00,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 96 flow [2023-11-29 01:23:00,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:00,830 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@102ba1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:00,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 01:23:00,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:23:00,837 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 01:23:00,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:00,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:00,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:00,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 01:23:00,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:00,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2094577129, now seen corresponding path program 1 times [2023-11-29 01:23:00,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:00,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526831064] [2023-11-29 01:23:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:00,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:01,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:01,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526831064] [2023-11-29 01:23:01,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526831064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:01,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:01,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:01,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943649641] [2023-11-29 01:23:01,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:01,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:23:01,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:01,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:23:01,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:23:01,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 46 [2023-11-29 01:23:01,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:23:01,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 46 [2023-11-29 01:23:01,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:23:01,174 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2023-11-29 01:23:01,174 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:23:01,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 0/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 4/44 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-11-29 01:23:01,176 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 6 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-29 01:23:01,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 92 flow [2023-11-29 01:23:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:23:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:23:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2023-11-29 01:23:01,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7898550724637681 [2023-11-29 01:23:01,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 109 transitions. [2023-11-29 01:23:01,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 109 transitions. [2023-11-29 01:23:01,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:23:01,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 109 transitions. [2023-11-29 01:23:01,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,203 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 96 flow. Second operand 3 states and 109 transitions. [2023-11-29 01:23:01,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 92 flow [2023-11-29 01:23:01,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 92 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:23:01,209 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 80 flow [2023-11-29 01:23:01,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-11-29 01:23:01,215 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places. [2023-11-29 01:23:01,215 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 80 flow [2023-11-29 01:23:01,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:01,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2023-11-29 01:23:01,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:23:01,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 01:23:01,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash -320352038, now seen corresponding path program 1 times [2023-11-29 01:23:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:01,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890108982] [2023-11-29 01:23:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:01,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:01,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:23:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:01,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:23:01,292 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:23:01,294 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-29 01:23:01,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2023-11-29 01:23:01,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2023-11-29 01:23:01,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2023-11-29 01:23:01,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2023-11-29 01:23:01,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2023-11-29 01:23:01,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:23:01,299 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:23:01,302 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:23:01,302 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 01:23:01,327 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:23:01,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 128 flow [2023-11-29 01:23:01,351 INFO L124 PetriNetUnfolderBase]: 3/83 cut-off events. [2023-11-29 01:23:01,352 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 01:23:01,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 83 events. 3/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2023-11-29 01:23:01,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 128 flow [2023-11-29 01:23:01,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 59 transitions, 128 flow [2023-11-29 01:23:01,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:01,359 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@102ba1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:01,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-29 01:23:01,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:23:01,364 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 01:23:01,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:01,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:01,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:01,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 01:23:01,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:01,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1482670770, now seen corresponding path program 1 times [2023-11-29 01:23:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:01,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355686221] [2023-11-29 01:23:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:01,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:01,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:01,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355686221] [2023-11-29 01:23:01,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355686221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:01,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:01,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:01,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686081951] [2023-11-29 01:23:01,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:01,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:23:01,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:23:01,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:23:01,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 59 [2023-11-29 01:23:01,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:23:01,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 59 [2023-11-29 01:23:01,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:23:01,467 INFO L124 PetriNetUnfolderBase]: 6/77 cut-off events. [2023-11-29 01:23:01,468 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-29 01:23:01,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 77 events. 6/77 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 6 based on Foata normal form. 13/90 useless extension candidates. Maximal degree in co-relation 52. Up to 22 conditions per place. [2023-11-29 01:23:01,469 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 9 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-29 01:23:01,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 126 flow [2023-11-29 01:23:01,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:23:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:23:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2023-11-29 01:23:01,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7796610169491526 [2023-11-29 01:23:01,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 138 transitions. [2023-11-29 01:23:01,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 138 transitions. [2023-11-29 01:23:01,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:23:01,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 138 transitions. [2023-11-29 01:23:01,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,476 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 128 flow. Second operand 3 states and 138 transitions. [2023-11-29 01:23:01,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 126 flow [2023-11-29 01:23:01,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:23:01,479 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 108 flow [2023-11-29 01:23:01,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-29 01:23:01,480 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -9 predicate places. [2023-11-29 01:23:01,480 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 108 flow [2023-11-29 01:23:01,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:01,481 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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, 1] [2023-11-29 01:23:01,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:23:01,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 01:23:01,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:01,482 INFO L85 PathProgramCache]: Analyzing trace with hash 655299326, now seen corresponding path program 1 times [2023-11-29 01:23:01,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:01,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180736273] [2023-11-29 01:23:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:01,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:01,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:23:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:01,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:23:01,534 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:23:01,535 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-29 01:23:01,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-11-29 01:23:01,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-11-29 01:23:01,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-11-29 01:23:01,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-11-29 01:23:01,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-11-29 01:23:01,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-11-29 01:23:01,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-11-29 01:23:01,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:23:01,537 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:23:01,538 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:23:01,538 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 01:23:01,564 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:23:01,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 72 transitions, 162 flow [2023-11-29 01:23:01,586 INFO L124 PetriNetUnfolderBase]: 4/109 cut-off events. [2023-11-29 01:23:01,586 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 01:23:01,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 4/109 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 191 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 87. Up to 8 conditions per place. [2023-11-29 01:23:01,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 72 transitions, 162 flow [2023-11-29 01:23:01,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 72 transitions, 162 flow [2023-11-29 01:23:01,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:01,592 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@102ba1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:01,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-29 01:23:01,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:23:01,596 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 01:23:01,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:01,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:01,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:01,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-29 01:23:01,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:01,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1116382202, now seen corresponding path program 1 times [2023-11-29 01:23:01,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:01,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735797770] [2023-11-29 01:23:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:01,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:01,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:01,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735797770] [2023-11-29 01:23:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735797770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:01,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:01,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:01,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445421455] [2023-11-29 01:23:01,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:01,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:23:01,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:01,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:23:01,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:23:01,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2023-11-29 01:23:01,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 162 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) [2023-11-29 01:23:01,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:23:01,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2023-11-29 01:23:01,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:23:01,705 INFO L124 PetriNetUnfolderBase]: 42/186 cut-off events. [2023-11-29 01:23:01,705 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-29 01:23:01,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 186 events. 42/186 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 693 event pairs, 42 based on Foata normal form. 40/226 useless extension candidates. Maximal degree in co-relation 166. Up to 85 conditions per place. [2023-11-29 01:23:01,709 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 12 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-29 01:23:01,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 162 flow [2023-11-29 01:23:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:23:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:23:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2023-11-29 01:23:01,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7731481481481481 [2023-11-29 01:23:01,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 167 transitions. [2023-11-29 01:23:01,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 167 transitions. [2023-11-29 01:23:01,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:23:01,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 167 transitions. [2023-11-29 01:23:01,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,715 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 162 flow. Second operand 3 states and 167 transitions. [2023-11-29 01:23:01,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 162 flow [2023-11-29 01:23:01,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 58 transitions, 160 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-29 01:23:01,717 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 136 flow [2023-11-29 01:23:01,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-11-29 01:23:01,719 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -11 predicate places. [2023-11-29 01:23:01,719 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 136 flow [2023-11-29 01:23:01,719 INFO L496 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) [2023-11-29 01:23:01,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:01,719 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 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, 1] [2023-11-29 01:23:01,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:23:01,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-29 01:23:01,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:01,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1507974489, now seen corresponding path program 1 times [2023-11-29 01:23:01,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:01,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755374346] [2023-11-29 01:23:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:01,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:01,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:23:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:01,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:23:01,768 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:23:01,769 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-29 01:23:01,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-29 01:23:01,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-29 01:23:01,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-29 01:23:01,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-29 01:23:01,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-29 01:23:01,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-29 01:23:01,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-29 01:23:01,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-29 01:23:01,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-29 01:23:01,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:23:01,771 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:23:01,771 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:23:01,772 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 01:23:01,798 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:23:01,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 198 flow [2023-11-29 01:23:01,830 INFO L124 PetriNetUnfolderBase]: 5/135 cut-off events. [2023-11-29 01:23:01,831 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 01:23:01,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 135 events. 5/135 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 253 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 117. Up to 10 conditions per place. [2023-11-29 01:23:01,832 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 198 flow [2023-11-29 01:23:01,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 85 transitions, 198 flow [2023-11-29 01:23:01,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:01,836 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@102ba1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:01,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-29 01:23:01,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:23:01,838 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 01:23:01,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:01,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:01,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:01,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-29 01:23:01,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1101524463, now seen corresponding path program 1 times [2023-11-29 01:23:01,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:01,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352189306] [2023-11-29 01:23:01,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:01,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:01,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:01,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352189306] [2023-11-29 01:23:01,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352189306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:01,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:01,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:01,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364926621] [2023-11-29 01:23:01,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:01,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:23:01,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:01,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:23:01,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:23:01,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 85 [2023-11-29 01:23:01,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:01,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:23:01,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 85 [2023-11-29 01:23:01,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:23:02,010 INFO L124 PetriNetUnfolderBase]: 204/547 cut-off events. [2023-11-29 01:23:02,010 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2023-11-29 01:23:02,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 547 events. 204/547 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2922 event pairs, 204 based on Foata normal form. 121/668 useless extension candidates. Maximal degree in co-relation 568. Up to 328 conditions per place. [2023-11-29 01:23:02,018 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 15 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-29 01:23:02,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 200 flow [2023-11-29 01:23:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:23:02,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:23:02,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2023-11-29 01:23:02,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7686274509803922 [2023-11-29 01:23:02,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2023-11-29 01:23:02,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2023-11-29 01:23:02,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:23:02,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2023-11-29 01:23:02,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:02,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:02,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:02,024 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 198 flow. Second operand 3 states and 196 transitions. [2023-11-29 01:23:02,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 69 transitions, 200 flow [2023-11-29 01:23:02,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 69 transitions, 194 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-29 01:23:02,027 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 164 flow [2023-11-29 01:23:02,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-11-29 01:23:02,028 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -13 predicate places. [2023-11-29 01:23:02,029 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 164 flow [2023-11-29 01:23:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:02,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:02,029 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 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, 1] [2023-11-29 01:23:02,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:23:02,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-29 01:23:02,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:02,030 INFO L85 PathProgramCache]: Analyzing trace with hash -752962670, now seen corresponding path program 1 times [2023-11-29 01:23:02,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:02,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550672436] [2023-11-29 01:23:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:02,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:02,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:23:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:02,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:23:02,074 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:23:02,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-11-29 01:23:02,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-11-29 01:23:02,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-11-29 01:23:02,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2023-11-29 01:23:02,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-11-29 01:23:02,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-11-29 01:23:02,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-11-29 01:23:02,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-11-29 01:23:02,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-11-29 01:23:02,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-11-29 01:23:02,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-11-29 01:23:02,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-11-29 01:23:02,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:23:02,077 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:23:02,078 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:23:02,078 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 01:23:02,105 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:23:02,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 98 transitions, 236 flow [2023-11-29 01:23:02,131 INFO L124 PetriNetUnfolderBase]: 6/161 cut-off events. [2023-11-29 01:23:02,131 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 01:23:02,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 161 events. 6/161 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 331 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 148. Up to 12 conditions per place. [2023-11-29 01:23:02,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 98 transitions, 236 flow [2023-11-29 01:23:02,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 98 transitions, 236 flow [2023-11-29 01:23:02,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:02,136 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@102ba1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:02,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-29 01:23:02,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:23:02,139 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 01:23:02,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:02,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:02,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:02,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-11-29 01:23:02,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:02,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1438097553, now seen corresponding path program 1 times [2023-11-29 01:23:02,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:02,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779749825] [2023-11-29 01:23:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:02,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:02,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:02,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779749825] [2023-11-29 01:23:02,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779749825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:02,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:02,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:02,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915473165] [2023-11-29 01:23:02,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:02,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:23:02,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:02,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:23:02,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:23:02,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 98 [2023-11-29 01:23:02,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:02,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:23:02,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 98 [2023-11-29 01:23:02,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:23:02,537 INFO L124 PetriNetUnfolderBase]: 852/1772 cut-off events. [2023-11-29 01:23:02,537 INFO L125 PetriNetUnfolderBase]: For 1559/1559 co-relation queries the response was YES. [2023-11-29 01:23:02,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3667 conditions, 1772 events. 852/1772 cut-off events. For 1559/1559 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11400 event pairs, 852 based on Foata normal form. 364/2136 useless extension candidates. Maximal degree in co-relation 1978. Up to 1219 conditions per place. [2023-11-29 01:23:02,561 INFO L140 encePairwiseOnDemand]: 83/98 looper letters, 18 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-11-29 01:23:02,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 80 transitions, 240 flow [2023-11-29 01:23:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:23:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:23:02,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-11-29 01:23:02,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7653061224489796 [2023-11-29 01:23:02,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-11-29 01:23:02,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-11-29 01:23:02,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:23:02,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-11-29 01:23:02,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:02,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:02,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:02,566 INFO L175 Difference]: Start difference. First operand has 108 places, 98 transitions, 236 flow. Second operand 3 states and 225 transitions. [2023-11-29 01:23:02,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 80 transitions, 240 flow [2023-11-29 01:23:02,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 80 transitions, 228 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-29 01:23:02,570 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 192 flow [2023-11-29 01:23:02,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2023-11-29 01:23:02,571 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -15 predicate places. [2023-11-29 01:23:02,571 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 192 flow [2023-11-29 01:23:02,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:02,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:02,572 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:02,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:23:02,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-11-29 01:23:02,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:02,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1500264856, now seen corresponding path program 1 times [2023-11-29 01:23:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:02,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302376082] [2023-11-29 01:23:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:02,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:23:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:02,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:23:02,618 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:23:02,618 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-11-29 01:23:02,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2023-11-29 01:23:02,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2023-11-29 01:23:02,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2023-11-29 01:23:02,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2023-11-29 01:23:02,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2023-11-29 01:23:02,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2023-11-29 01:23:02,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2023-11-29 01:23:02,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2023-11-29 01:23:02,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2023-11-29 01:23:02,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2023-11-29 01:23:02,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2023-11-29 01:23:02,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2023-11-29 01:23:02,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2023-11-29 01:23:02,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:23:02,620 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:23:02,621 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:23:02,621 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-29 01:23:02,651 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:23:02,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 111 transitions, 276 flow [2023-11-29 01:23:02,684 INFO L124 PetriNetUnfolderBase]: 7/187 cut-off events. [2023-11-29 01:23:02,685 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-29 01:23:02,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 187 events. 7/187 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 393 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 180. Up to 14 conditions per place. [2023-11-29 01:23:02,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 111 transitions, 276 flow [2023-11-29 01:23:02,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 111 transitions, 276 flow [2023-11-29 01:23:02,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:02,690 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@102ba1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:02,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-29 01:23:02,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:23:02,692 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 01:23:02,692 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:02,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:02,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:02,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 01:23:02,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:02,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2126101472, now seen corresponding path program 1 times [2023-11-29 01:23:02,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:02,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966682688] [2023-11-29 01:23:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:02,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:02,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:02,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966682688] [2023-11-29 01:23:02,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966682688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:02,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:02,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:02,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93905682] [2023-11-29 01:23:02,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:02,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:23:02,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:23:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:23:02,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 111 [2023-11-29 01:23:02,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 111 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:02,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:23:02,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 111 [2023-11-29 01:23:02,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:23:03,817 INFO L124 PetriNetUnfolderBase]: 3282/5913 cut-off events. [2023-11-29 01:23:03,817 INFO L125 PetriNetUnfolderBase]: For 6667/6667 co-relation queries the response was YES. [2023-11-29 01:23:03,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12669 conditions, 5913 events. 3282/5913 cut-off events. For 6667/6667 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 42521 event pairs, 3282 based on Foata normal form. 1093/7006 useless extension candidates. Maximal degree in co-relation 6844. Up to 4378 conditions per place. [2023-11-29 01:23:03,899 INFO L140 encePairwiseOnDemand]: 94/111 looper letters, 21 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-29 01:23:03,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 91 transitions, 282 flow [2023-11-29 01:23:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:23:03,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:23:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-11-29 01:23:03,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7627627627627628 [2023-11-29 01:23:03,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-11-29 01:23:03,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-11-29 01:23:03,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:23:03,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-11-29 01:23:03,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:03,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:03,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:03,905 INFO L175 Difference]: Start difference. First operand has 123 places, 111 transitions, 276 flow. Second operand 3 states and 254 transitions. [2023-11-29 01:23:03,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 91 transitions, 282 flow [2023-11-29 01:23:03,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 91 transitions, 262 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-29 01:23:03,910 INFO L231 Difference]: Finished difference. Result has 106 places, 91 transitions, 220 flow [2023-11-29 01:23:03,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=106, PETRI_TRANSITIONS=91} [2023-11-29 01:23:03,911 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -17 predicate places. [2023-11-29 01:23:03,911 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 91 transitions, 220 flow [2023-11-29 01:23:03,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:03,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:03,912 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:23:03,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 01:23:03,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:03,913 INFO L85 PathProgramCache]: Analyzing trace with hash 449332122, now seen corresponding path program 1 times [2023-11-29 01:23:03,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:03,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217764942] [2023-11-29 01:23:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:03,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:03,935 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:23:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:03,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:23:03,958 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:23:03,958 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-11-29 01:23:03,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-11-29 01:23:03,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-11-29 01:23:03,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-11-29 01:23:03,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-11-29 01:23:03,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-11-29 01:23:03,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-11-29 01:23:03,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-11-29 01:23:03,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-11-29 01:23:03,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-11-29 01:23:03,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-11-29 01:23:03,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-11-29 01:23:03,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-11-29 01:23:03,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-11-29 01:23:03,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-11-29 01:23:03,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-11-29 01:23:03,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:23:03,961 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:23:03,961 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:23:03,961 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-11-29 01:23:03,996 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:23:04,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 124 transitions, 318 flow [2023-11-29 01:23:04,054 INFO L124 PetriNetUnfolderBase]: 8/213 cut-off events. [2023-11-29 01:23:04,054 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-29 01:23:04,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 213 events. 8/213 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 479 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 213. Up to 16 conditions per place. [2023-11-29 01:23:04,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 124 transitions, 318 flow [2023-11-29 01:23:04,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 124 transitions, 318 flow [2023-11-29 01:23:04,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:04,059 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@102ba1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:04,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-29 01:23:04,060 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:23:04,060 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 01:23:04,060 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:04,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:04,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:04,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-11-29 01:23:04,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1129431076, now seen corresponding path program 1 times [2023-11-29 01:23:04,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130490093] [2023-11-29 01:23:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:04,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:04,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130490093] [2023-11-29 01:23:04,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130490093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:04,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:04,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:04,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382368295] [2023-11-29 01:23:04,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:04,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:23:04,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:23:04,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:23:04,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 124 [2023-11-29 01:23:04,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:04,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:23:04,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 124 [2023-11-29 01:23:04,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:23:07,132 INFO L124 PetriNetUnfolderBase]: 12030/19774 cut-off events. [2023-11-29 01:23:07,133 INFO L125 PetriNetUnfolderBase]: For 27085/27085 co-relation queries the response was YES. [2023-11-29 01:23:07,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43298 conditions, 19774 events. 12030/19774 cut-off events. For 27085/27085 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 152724 event pairs, 12030 based on Foata normal form. 3280/23054 useless extension candidates. Maximal degree in co-relation 23374. Up to 15313 conditions per place. [2023-11-29 01:23:07,345 INFO L140 encePairwiseOnDemand]: 105/124 looper letters, 24 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-11-29 01:23:07,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 102 transitions, 326 flow [2023-11-29 01:23:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:23:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:23:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-29 01:23:07,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2023-11-29 01:23:07,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-29 01:23:07,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-29 01:23:07,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:23:07,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-29 01:23:07,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:07,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:07,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:07,350 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 318 flow. Second operand 3 states and 283 transitions. [2023-11-29 01:23:07,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 102 transitions, 326 flow [2023-11-29 01:23:07,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 102 transitions, 296 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-11-29 01:23:07,358 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 248 flow [2023-11-29 01:23:07,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2023-11-29 01:23:07,359 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -19 predicate places. [2023-11-29 01:23:07,360 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 248 flow [2023-11-29 01:23:07,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:07,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:07,360 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:07,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:23:07,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-11-29 01:23:07,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:07,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1834424809, now seen corresponding path program 1 times [2023-11-29 01:23:07,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:07,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204407282] [2023-11-29 01:23:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:07,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:07,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:23:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:07,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:23:07,480 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:23:07,480 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-29 01:23:07,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-11-29 01:23:07,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-11-29 01:23:07,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-11-29 01:23:07,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-11-29 01:23:07,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2023-11-29 01:23:07,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-11-29 01:23:07,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-11-29 01:23:07,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-11-29 01:23:07,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-11-29 01:23:07,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-11-29 01:23:07,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-11-29 01:23:07,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-11-29 01:23:07,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-11-29 01:23:07,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-11-29 01:23:07,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-11-29 01:23:07,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-11-29 01:23:07,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-11-29 01:23:07,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:23:07,488 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:23:07,489 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:23:07,489 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-11-29 01:23:07,530 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:23:07,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 137 transitions, 362 flow [2023-11-29 01:23:07,572 INFO L124 PetriNetUnfolderBase]: 9/239 cut-off events. [2023-11-29 01:23:07,572 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-29 01:23:07,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 239 events. 9/239 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 535 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 247. Up to 18 conditions per place. [2023-11-29 01:23:07,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 137 transitions, 362 flow [2023-11-29 01:23:07,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 137 transitions, 362 flow [2023-11-29 01:23:07,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:07,578 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@102ba1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:07,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 01:23:07,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:23:07,580 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 01:23:07,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:07,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:07,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:07,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:23:07,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:07,581 INFO L85 PathProgramCache]: Analyzing trace with hash 261434501, now seen corresponding path program 1 times [2023-11-29 01:23:07,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:07,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144513943] [2023-11-29 01:23:07,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:07,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:07,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:07,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144513943] [2023-11-29 01:23:07,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144513943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:07,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:07,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:07,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47647723] [2023-11-29 01:23:07,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:07,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:23:07,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:07,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:23:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:23:07,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 137 [2023-11-29 01:23:07,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 137 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:07,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:23:07,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 137 [2023-11-29 01:23:07,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:23:17,003 INFO L124 PetriNetUnfolderBase]: 42648/65711 cut-off events. [2023-11-29 01:23:17,003 INFO L125 PetriNetUnfolderBase]: For 105824/105824 co-relation queries the response was YES. [2023-11-29 01:23:17,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146098 conditions, 65711 events. 42648/65711 cut-off events. For 105824/105824 co-relation queries the response was YES. Maximal size of possible extension queue 2859. Compared 535016 event pairs, 42648 based on Foata normal form. 9841/75552 useless extension candidates. Maximal degree in co-relation 78784. Up to 52492 conditions per place. [2023-11-29 01:23:17,712 INFO L140 encePairwiseOnDemand]: 116/137 looper letters, 27 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-11-29 01:23:17,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 113 transitions, 372 flow [2023-11-29 01:23:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:23:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:23:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-11-29 01:23:17,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7591240875912408 [2023-11-29 01:23:17,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-11-29 01:23:17,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-11-29 01:23:17,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:23:17,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-11-29 01:23:17,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:17,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:17,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:17,717 INFO L175 Difference]: Start difference. First operand has 153 places, 137 transitions, 362 flow. Second operand 3 states and 312 transitions. [2023-11-29 01:23:17,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 113 transitions, 372 flow [2023-11-29 01:23:17,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 113 transitions, 330 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-11-29 01:23:17,744 INFO L231 Difference]: Finished difference. Result has 132 places, 113 transitions, 276 flow [2023-11-29 01:23:17,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=132, PETRI_TRANSITIONS=113} [2023-11-29 01:23:17,745 INFO L281 CegarLoopForPetriNet]: 153 programPoint places, -21 predicate places. [2023-11-29 01:23:17,745 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 113 transitions, 276 flow [2023-11-29 01:23:17,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:17,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:17,746 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:17,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:23:17,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:23:17,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:17,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1867293334, now seen corresponding path program 1 times [2023-11-29 01:23:17,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:17,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133915222] [2023-11-29 01:23:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:17,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:17,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:23:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:17,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:23:17,789 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:23:17,789 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-11-29 01:23:17,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-11-29 01:23:17,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-11-29 01:23:17,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-11-29 01:23:17,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-11-29 01:23:17,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-11-29 01:23:17,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-11-29 01:23:17,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-11-29 01:23:17,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-11-29 01:23:17,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-11-29 01:23:17,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-11-29 01:23:17,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-11-29 01:23:17,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-11-29 01:23:17,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-11-29 01:23:17,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-11-29 01:23:17,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-11-29 01:23:17,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-11-29 01:23:17,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-11-29 01:23:17,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-11-29 01:23:17,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-11-29 01:23:17,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:23:17,791 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:23:17,792 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:23:17,792 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-11-29 01:23:17,827 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:23:17,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 150 transitions, 408 flow [2023-11-29 01:23:17,853 INFO L124 PetriNetUnfolderBase]: 10/265 cut-off events. [2023-11-29 01:23:17,853 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-29 01:23:17,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 265 events. 10/265 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 589 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 282. Up to 20 conditions per place. [2023-11-29 01:23:17,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 150 transitions, 408 flow [2023-11-29 01:23:17,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 150 transitions, 408 flow [2023-11-29 01:23:17,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:17,857 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@102ba1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:17,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 01:23:17,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:23:17,858 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 01:23:17,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:17,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:17,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:17,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2023-11-29 01:23:17,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:17,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2003730907, now seen corresponding path program 1 times [2023-11-29 01:23:17,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:17,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781844264] [2023-11-29 01:23:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:17,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:17,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:17,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781844264] [2023-11-29 01:23:17,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781844264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:17,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:17,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:17,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873459866] [2023-11-29 01:23:17,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:17,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:23:17,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:17,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:23:17,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:23:17,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 150 [2023-11-29 01:23:17,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 150 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:17,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:23:17,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 150 [2023-11-29 01:23:17,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:23:49,327 INFO L124 PetriNetUnfolderBase]: 147624/216624 cut-off events. [2023-11-29 01:23:49,327 INFO L125 PetriNetUnfolderBase]: For 401077/401077 co-relation queries the response was YES. [2023-11-29 01:23:50,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487281 conditions, 216624 events. 147624/216624 cut-off events. For 401077/401077 co-relation queries the response was YES. Maximal size of possible extension queue 8393. Compared 1833115 event pairs, 147624 based on Foata normal form. 29524/246148 useless extension candidates. Maximal degree in co-relation 262498. Up to 177151 conditions per place. [2023-11-29 01:23:52,671 INFO L140 encePairwiseOnDemand]: 127/150 looper letters, 30 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-11-29 01:23:52,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 124 transitions, 420 flow [2023-11-29 01:23:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:23:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:23:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-11-29 01:23:52,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7577777777777778 [2023-11-29 01:23:52,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-11-29 01:23:52,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-11-29 01:23:52,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:23:52,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-11-29 01:23:52,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:52,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:52,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:52,677 INFO L175 Difference]: Start difference. First operand has 168 places, 150 transitions, 408 flow. Second operand 3 states and 341 transitions. [2023-11-29 01:23:52,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 124 transitions, 420 flow [2023-11-29 01:23:52,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 124 transitions, 364 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-11-29 01:23:52,853 INFO L231 Difference]: Finished difference. Result has 145 places, 124 transitions, 304 flow [2023-11-29 01:23:52,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=145, PETRI_TRANSITIONS=124} [2023-11-29 01:23:52,854 INFO L281 CegarLoopForPetriNet]: 168 programPoint places, -23 predicate places. [2023-11-29 01:23:52,854 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 124 transitions, 304 flow [2023-11-29 01:23:52,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:52,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:52,854 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:52,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:23:52,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2023-11-29 01:23:52,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash -894426282, now seen corresponding path program 1 times [2023-11-29 01:23:52,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:52,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453332324] [2023-11-29 01:23:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:52,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:52,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:23:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:23:52,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:23:52,898 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:23:52,898 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-29 01:23:52,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-29 01:23:52,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-29 01:23:52,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-29 01:23:52,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-29 01:23:52,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-29 01:23:52,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-29 01:23:52,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-29 01:23:52,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-29 01:23:52,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-29 01:23:52,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-29 01:23:52,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-29 01:23:52,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-29 01:23:52,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-29 01:23:52,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-29 01:23:52,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-29 01:23:52,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-29 01:23:52,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-29 01:23:52,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-29 01:23:52,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-29 01:23:52,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-29 01:23:52,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-29 01:23:52,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:23:52,902 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:23:52,903 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:23:52,903 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-11-29 01:23:52,945 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:23:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 163 transitions, 456 flow [2023-11-29 01:23:52,985 INFO L124 PetriNetUnfolderBase]: 11/291 cut-off events. [2023-11-29 01:23:52,985 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-11-29 01:23:52,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 291 events. 11/291 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 649 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 318. Up to 22 conditions per place. [2023-11-29 01:23:52,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 163 transitions, 456 flow [2023-11-29 01:23:52,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 163 transitions, 456 flow [2023-11-29 01:23:52,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:52,989 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@102ba1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:52,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-29 01:23:52,990 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:23:52,990 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 01:23:52,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:23:52,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:23:52,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:52,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-11-29 01:23:52,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:52,991 INFO L85 PathProgramCache]: Analyzing trace with hash -197509154, now seen corresponding path program 1 times [2023-11-29 01:23:52,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:52,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639715179] [2023-11-29 01:23:52,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:52,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:53,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:53,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639715179] [2023-11-29 01:23:53,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639715179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:53,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:53,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:53,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185150596] [2023-11-29 01:23:53,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:53,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:23:53,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:53,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:23:53,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:23:53,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 163 [2023-11-29 01:23:53,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 163 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:53,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:23:53,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 163 [2023-11-29 01:23:53,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand