./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx --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 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:28:40,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:28:40,711 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:28:40,719 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:28:40,720 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:28:40,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:28:40,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:28:40,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:28:40,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:28:40,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:28:40,768 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:28:40,769 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:28:40,769 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:28:40,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:28:40,772 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:28:40,772 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:28:40,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:28:40,773 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:28:40,774 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:28:40,774 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:28:40,775 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:28:40,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:28:40,777 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:28:40,778 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:28:40,778 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:28:40,779 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:28:40,779 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:28:40,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:28:40,780 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:28:40,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:28:40,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:28:40,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:28:40,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:28:40,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:28:40,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:28:40,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:28:40,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:28:40,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:28:40,785 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:28:40,785 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:28:40,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:28:40,786 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_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb [2023-11-21 22:28:41,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:28:41,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:28:41,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:28:41,126 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:28:41,127 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:28:41,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2023-11-21 22:28:44,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:28:44,680 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:28:44,681 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2023-11-21 22:28:44,696 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/data/e1ea08c69/9511000b49964db7b34864001e5e2599/FLAG0afc2e17b [2023-11-21 22:28:44,710 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/data/e1ea08c69/9511000b49964db7b34864001e5e2599 [2023-11-21 22:28:44,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:28:44,714 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:28:44,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:28:44,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:28:44,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:28:44,727 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:28:44" (1/1) ... [2023-11-21 22:28:44,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df49735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:44, skipping insertion in model container [2023-11-21 22:28:44,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:28:44" (1/1) ... [2023-11-21 22:28:44,789 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:28:45,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:28:45,254 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:28:45,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:28:45,380 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:28:45,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45 WrapperNode [2023-11-21 22:28:45,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:28:45,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:28:45,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:28:45,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:28:45,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,455 INFO L138 Inliner]: procedures = 170, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 150 [2023-11-21 22:28:45,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:28:45,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:28:45,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:28:45,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:28:45,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,471 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,489 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:28:45,498 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:28:45,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:28:45,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:28:45,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (1/1) ... [2023-11-21 22:28:45,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:28:45,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:28:45,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:28:45,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcec9fd-ac37-47cb-819f-912ba759547c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:28:45,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:28:45,596 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-21 22:28:45,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-21 22:28:45,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:28:45,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:28:45,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:28:45,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:28:45,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:28:45,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:28:45,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:28:45,601 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:28:45,790 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:28:45,793 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:28:46,164 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:28:46,417 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:28:46,418 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:28:46,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:28:46 BoogieIcfgContainer [2023-11-21 22:28:46,420 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:28:46,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:28:46,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:28:46,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:28:46,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:28:44" (1/3) ... [2023-11-21 22:28:46,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba7d68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:28:46, skipping insertion in model container [2023-11-21 22:28:46,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:45" (2/3) ... [2023-11-21 22:28:46,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba7d68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:28:46, skipping insertion in model container [2023-11-21 22:28:46,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:28:46" (3/3) ... [2023-11-21 22:28:46,432 INFO L112 eAbstractionObserver]: Analyzing ICFG 12_fmaxsymopt_cas.i [2023-11-21 22:28:46,441 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:28:46,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:28:46,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-21 22:28:46,453 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:28:46,562 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:28:46,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 131 transitions, 266 flow [2023-11-21 22:28:46,668 INFO L124 PetriNetUnfolderBase]: 13/142 cut-off events. [2023-11-21 22:28:46,668 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:28:46,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 142 events. 13/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-11-21 22:28:46,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 131 transitions, 266 flow [2023-11-21 22:28:46,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 131 transitions, 266 flow [2023-11-21 22:28:46,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:28:46,698 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;@71224f94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:28:46,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-21 22:28:46,712 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:28:46,712 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-21 22:28:46,713 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:28:46,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:46,714 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, 1, 1] [2023-11-21 22:28:46,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-21 22:28:46,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:46,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1079948721, now seen corresponding path program 1 times [2023-11-21 22:28:46,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:46,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435424794] [2023-11-21 22:28:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:46,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:46,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:46,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:46,939 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:28:46,941 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-21 22:28:46,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-21 22:28:46,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-21 22:28:46,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-21 22:28:46,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-21 22:28:46,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-21 22:28:46,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-21 22:28:46,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-21 22:28:46,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-21 22:28:46,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-21 22:28:46,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-21 22:28:46,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-21 22:28:46,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-21 22:28:46,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-21 22:28:46,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-21 22:28:46,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-21 22:28:46,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-21 22:28:46,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:28:46,952 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:28:46,961 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:28:46,961 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:28:47,127 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:28:47,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 228 transitions, 466 flow [2023-11-21 22:28:47,273 INFO L124 PetriNetUnfolderBase]: 25/252 cut-off events. [2023-11-21 22:28:47,273 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:28:47,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 252 events. 25/252 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 722 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 205. Up to 6 conditions per place. [2023-11-21 22:28:47,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 228 transitions, 466 flow [2023-11-21 22:28:47,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 228 transitions, 466 flow [2023-11-21 22:28:47,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:28:47,297 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;@71224f94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:28:47,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-21 22:28:47,318 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:28:47,318 INFO L124 PetriNetUnfolderBase]: 4/79 cut-off events. [2023-11-21 22:28:47,319 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:28:47,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:47,320 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, 1, 1] [2023-11-21 22:28:47,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-21 22:28:47,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:47,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1545351096, now seen corresponding path program 1 times [2023-11-21 22:28:47,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:47,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437852084] [2023-11-21 22:28:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:47,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:47,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:47,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:47,405 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:28:47,405 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-21 22:28:47,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-21 22:28:47,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-21 22:28:47,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-21 22:28:47,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-21 22:28:47,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-21 22:28:47,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-21 22:28:47,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-21 22:28:47,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-21 22:28:47,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-21 22:28:47,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-21 22:28:47,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-21 22:28:47,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-21 22:28:47,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-21 22:28:47,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-21 22:28:47,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-21 22:28:47,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-21 22:28:47,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-21 22:28:47,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-21 22:28:47,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-21 22:28:47,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-21 22:28:47,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-21 22:28:47,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-21 22:28:47,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-21 22:28:47,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-21 22:28:47,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:28:47,414 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:28:47,415 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:28:47,415 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:28:47,534 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:28:47,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 325 transitions, 668 flow [2023-11-21 22:28:47,713 INFO L124 PetriNetUnfolderBase]: 37/362 cut-off events. [2023-11-21 22:28:47,713 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:28:47,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 362 events. 37/362 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1314 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 301. Up to 8 conditions per place. [2023-11-21 22:28:47,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 325 transitions, 668 flow [2023-11-21 22:28:47,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 325 transitions, 668 flow [2023-11-21 22:28:47,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:28:47,740 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;@71224f94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:28:47,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-21 22:28:47,761 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:28:47,761 INFO L124 PetriNetUnfolderBase]: 7/116 cut-off events. [2023-11-21 22:28:47,762 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:28:47,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:47,762 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, 1, 1] [2023-11-21 22:28:47,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-21 22:28:47,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:47,765 INFO L85 PathProgramCache]: Analyzing trace with hash 951361902, now seen corresponding path program 1 times [2023-11-21 22:28:47,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:47,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120490372] [2023-11-21 22:28:47,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:47,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:47,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:47,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:47,897 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:28:47,898 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-11-21 22:28:47,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-11-21 22:28:47,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2023-11-21 22:28:47,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-11-21 22:28:47,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-11-21 22:28:47,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-11-21 22:28:47,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-11-21 22:28:47,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-11-21 22:28:47,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2023-11-21 22:28:47,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2023-11-21 22:28:47,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-11-21 22:28:47,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-11-21 22:28:47,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-11-21 22:28:47,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-11-21 22:28:47,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-11-21 22:28:47,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-11-21 22:28:47,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2023-11-21 22:28:47,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-11-21 22:28:47,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-11-21 22:28:47,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-11-21 22:28:47,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2023-11-21 22:28:47,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-11-21 22:28:47,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-11-21 22:28:47,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-11-21 22:28:47,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2023-11-21 22:28:47,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-11-21 22:28:47,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-11-21 22:28:47,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-11-21 22:28:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2023-11-21 22:28:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-11-21 22:28:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-11-21 22:28:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-11-21 22:28:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2023-11-21 22:28:47,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:28:47,910 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:28:47,911 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:28:47,911 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-21 22:28:48,073 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:28:48,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 422 transitions, 872 flow [2023-11-21 22:28:48,307 INFO L124 PetriNetUnfolderBase]: 49/472 cut-off events. [2023-11-21 22:28:48,308 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 22:28:48,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 472 events. 49/472 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1948 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 397. Up to 10 conditions per place. [2023-11-21 22:28:48,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 422 transitions, 872 flow [2023-11-21 22:28:48,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 386 places, 422 transitions, 872 flow [2023-11-21 22:28:48,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:28:48,336 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;@71224f94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:28:48,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-21 22:28:48,360 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:28:48,361 INFO L124 PetriNetUnfolderBase]: 10/164 cut-off events. [2023-11-21 22:28:48,361 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-21 22:28:48,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:48,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:48,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-21 22:28:48,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:48,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1733352409, now seen corresponding path program 1 times [2023-11-21 22:28:48,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:48,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125674697] [2023-11-21 22:28:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:48,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:49,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:49,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125674697] [2023-11-21 22:28:49,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125674697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:49,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:49,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:28:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304013732] [2023-11-21 22:28:49,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:49,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:49,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:49,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:49,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:50,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 422 [2023-11-21 22:28:50,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 422 transitions, 872 flow. Second operand has 6 states, 6 states have (on average 357.6666666666667) internal successors, (2146), 6 states have internal predecessors, (2146), 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) [2023-11-21 22:28:50,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:50,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 422 [2023-11-21 22:28:50,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:54,262 INFO L124 PetriNetUnfolderBase]: 748/7569 cut-off events. [2023-11-21 22:28:54,263 INFO L125 PetriNetUnfolderBase]: For 1045/1045 co-relation queries the response was YES. [2023-11-21 22:28:54,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8740 conditions, 7569 events. 748/7569 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 81673 event pairs, 239 based on Foata normal form. 1636/8216 useless extension candidates. Maximal degree in co-relation 3490. Up to 557 conditions per place. [2023-11-21 22:28:54,520 INFO L140 encePairwiseOnDemand]: 370/422 looper letters, 31 selfloop transitions, 18 changer transitions 0/392 dead transitions. [2023-11-21 22:28:54,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 392 transitions, 994 flow [2023-11-21 22:28:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:28:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:28:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2358 transitions. [2023-11-21 22:28:54,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9312796208530806 [2023-11-21 22:28:54,549 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2358 transitions. [2023-11-21 22:28:54,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2358 transitions. [2023-11-21 22:28:54,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:54,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2358 transitions. [2023-11-21 22:28:54,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 393.0) internal successors, (2358), 6 states have internal predecessors, (2358), 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) [2023-11-21 22:28:54,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 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) [2023-11-21 22:28:54,585 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 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) [2023-11-21 22:28:54,587 INFO L175 Difference]: Start difference. First operand has 386 places, 422 transitions, 872 flow. Second operand 6 states and 2358 transitions. [2023-11-21 22:28:54,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 392 transitions, 994 flow [2023-11-21 22:28:54,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 392 transitions, 964 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-11-21 22:28:54,611 INFO L231 Difference]: Finished difference. Result has 362 places, 380 transitions, 872 flow [2023-11-21 22:28:54,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=872, PETRI_PLACES=362, PETRI_TRANSITIONS=380} [2023-11-21 22:28:54,618 INFO L281 CegarLoopForPetriNet]: 386 programPoint places, -24 predicate places. [2023-11-21 22:28:54,619 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 380 transitions, 872 flow [2023-11-21 22:28:54,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 357.6666666666667) internal successors, (2146), 6 states have internal predecessors, (2146), 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) [2023-11-21 22:28:54,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:54,621 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, 1, 1] [2023-11-21 22:28:54,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:28:54,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-21 22:28:54,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash 888862658, now seen corresponding path program 1 times [2023-11-21 22:28:54,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:54,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057763286] [2023-11-21 22:28:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:54,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:54,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:54,669 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:54,669 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:28:54,669 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2023-11-21 22:28:54,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2023-11-21 22:28:54,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2023-11-21 22:28:54,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2023-11-21 22:28:54,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2023-11-21 22:28:54,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2023-11-21 22:28:54,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2023-11-21 22:28:54,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2023-11-21 22:28:54,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2023-11-21 22:28:54,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2023-11-21 22:28:54,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2023-11-21 22:28:54,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2023-11-21 22:28:54,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2023-11-21 22:28:54,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2023-11-21 22:28:54,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2023-11-21 22:28:54,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2023-11-21 22:28:54,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2023-11-21 22:28:54,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2023-11-21 22:28:54,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2023-11-21 22:28:54,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2023-11-21 22:28:54,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2023-11-21 22:28:54,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2023-11-21 22:28:54,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2023-11-21 22:28:54,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2023-11-21 22:28:54,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2023-11-21 22:28:54,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2023-11-21 22:28:54,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2023-11-21 22:28:54,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2023-11-21 22:28:54,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2023-11-21 22:28:54,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2023-11-21 22:28:54,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2023-11-21 22:28:54,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2023-11-21 22:28:54,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2023-11-21 22:28:54,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2023-11-21 22:28:54,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2023-11-21 22:28:54,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2023-11-21 22:28:54,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2023-11-21 22:28:54,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2023-11-21 22:28:54,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2023-11-21 22:28:54,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2023-11-21 22:28:54,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2023-11-21 22:28:54,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:28:54,680 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-21 22:28:54,680 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:28:54,681 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-21 22:28:54,834 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:28:54,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 474 places, 519 transitions, 1078 flow [2023-11-21 22:28:55,180 INFO L124 PetriNetUnfolderBase]: 61/582 cut-off events. [2023-11-21 22:28:55,180 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-21 22:28:55,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 582 events. 61/582 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2609 event pairs, 0 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 493. Up to 12 conditions per place. [2023-11-21 22:28:55,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 474 places, 519 transitions, 1078 flow [2023-11-21 22:28:55,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 474 places, 519 transitions, 1078 flow [2023-11-21 22:28:55,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:28:55,212 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;@71224f94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:28:55,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-21 22:28:55,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:28:55,234 INFO L124 PetriNetUnfolderBase]: 11/170 cut-off events. [2023-11-21 22:28:55,234 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-21 22:28:55,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:55,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:55,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-21 22:28:55,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:55,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1960330791, now seen corresponding path program 1 times [2023-11-21 22:28:55,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:55,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783063466] [2023-11-21 22:28:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:55,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:55,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:55,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783063466] [2023-11-21 22:28:55,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783063466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:55,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:55,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:28:55,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101116198] [2023-11-21 22:28:55,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:55,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:55,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:55,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:57,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 519 [2023-11-21 22:28:57,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 519 transitions, 1078 flow. Second operand has 6 states, 6 states have (on average 441.6666666666667) internal successors, (2650), 6 states have internal predecessors, (2650), 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) [2023-11-21 22:28:57,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:57,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 519 [2023-11-21 22:28:57,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:29:05,058 INFO L124 PetriNetUnfolderBase]: 1883/16881 cut-off events. [2023-11-21 22:29:05,058 INFO L125 PetriNetUnfolderBase]: For 3507/3507 co-relation queries the response was YES. [2023-11-21 22:29:05,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19927 conditions, 16881 events. 1883/16881 cut-off events. For 3507/3507 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 209182 event pairs, 702 based on Foata normal form. 4660/19332 useless extension candidates. Maximal degree in co-relation 8706. Up to 1468 conditions per place. [2023-11-21 22:29:05,636 INFO L140 encePairwiseOnDemand]: 456/519 looper letters, 37 selfloop transitions, 22 changer transitions 0/484 dead transitions. [2023-11-21 22:29:05,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 484 transitions, 1254 flow [2023-11-21 22:29:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:29:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:29:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2922 transitions. [2023-11-21 22:29:05,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9383429672447013 [2023-11-21 22:29:05,647 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2922 transitions. [2023-11-21 22:29:05,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2922 transitions. [2023-11-21 22:29:05,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:29:05,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2922 transitions. [2023-11-21 22:29:05,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 487.0) internal successors, (2922), 6 states have internal predecessors, (2922), 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) [2023-11-21 22:29:05,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 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) [2023-11-21 22:29:05,671 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 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) [2023-11-21 22:29:05,671 INFO L175 Difference]: Start difference. First operand has 474 places, 519 transitions, 1078 flow. Second operand 6 states and 2922 transitions. [2023-11-21 22:29:05,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 484 transitions, 1254 flow [2023-11-21 22:29:05,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 484 transitions, 1194 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-11-21 22:29:05,691 INFO L231 Difference]: Finished difference. Result has 443 places, 468 transitions, 1072 flow [2023-11-21 22:29:05,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1072, PETRI_PLACES=443, PETRI_TRANSITIONS=468} [2023-11-21 22:29:05,696 INFO L281 CegarLoopForPetriNet]: 474 programPoint places, -31 predicate places. [2023-11-21 22:29:05,696 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 468 transitions, 1072 flow [2023-11-21 22:29:05,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 441.6666666666667) internal successors, (2650), 6 states have internal predecessors, (2650), 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) [2023-11-21 22:29:05,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:29:05,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:29:05,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:29:05,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-21 22:29:05,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:29:05,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2019187171, now seen corresponding path program 1 times [2023-11-21 22:29:05,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:29:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126545012] [2023-11-21 22:29:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:05,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:29:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:29:05,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:29:05,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126545012] [2023-11-21 22:29:05,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126545012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:29:05,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:29:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:29:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64615208] [2023-11-21 22:29:05,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:29:05,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:29:05,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:29:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:29:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:29:05,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 519 [2023-11-21 22:29:05,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 468 transitions, 1072 flow. Second operand has 3 states, 3 states have (on average 447.0) internal successors, (1341), 3 states have internal predecessors, (1341), 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) [2023-11-21 22:29:05,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:29:05,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 519 [2023-11-21 22:29:05,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:29:13,977 INFO L124 PetriNetUnfolderBase]: 2598/22004 cut-off events. [2023-11-21 22:29:13,977 INFO L125 PetriNetUnfolderBase]: For 3728/5897 co-relation queries the response was YES. [2023-11-21 22:29:14,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27999 conditions, 22004 events. 2598/22004 cut-off events. For 3728/5897 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 288775 event pairs, 709 based on Foata normal form. 65/19205 useless extension candidates. Maximal degree in co-relation 26116. Up to 1659 conditions per place. [2023-11-21 22:29:15,031 INFO L140 encePairwiseOnDemand]: 516/519 looper letters, 57 selfloop transitions, 3 changer transitions 0/494 dead transitions. [2023-11-21 22:29:15,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 494 transitions, 1342 flow [2023-11-21 22:29:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:29:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:29:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1362 transitions. [2023-11-21 22:29:15,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8747591522157996 [2023-11-21 22:29:15,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1362 transitions. [2023-11-21 22:29:15,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1362 transitions. [2023-11-21 22:29:15,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:29:15,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1362 transitions. [2023-11-21 22:29:15,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 454.0) internal successors, (1362), 3 states have internal predecessors, (1362), 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) [2023-11-21 22:29:15,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 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) [2023-11-21 22:29:15,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 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) [2023-11-21 22:29:15,053 INFO L175 Difference]: Start difference. First operand has 443 places, 468 transitions, 1072 flow. Second operand 3 states and 1362 transitions. [2023-11-21 22:29:15,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 494 transitions, 1342 flow [2023-11-21 22:29:15,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 494 transitions, 1342 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:29:15,085 INFO L231 Difference]: Finished difference. Result has 446 places, 470 transitions, 1097 flow [2023-11-21 22:29:15,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1097, PETRI_PLACES=446, PETRI_TRANSITIONS=470} [2023-11-21 22:29:15,088 INFO L281 CegarLoopForPetriNet]: 474 programPoint places, -28 predicate places. [2023-11-21 22:29:15,088 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 470 transitions, 1097 flow [2023-11-21 22:29:15,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 447.0) internal successors, (1341), 3 states have internal predecessors, (1341), 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) [2023-11-21 22:29:15,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:29:15,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:29:15,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:29:15,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-21 22:29:15,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:29:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2140989108, now seen corresponding path program 1 times [2023-11-21 22:29:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:29:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98008609] [2023-11-21 22:29:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:29:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:29:15,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:29:15,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98008609] [2023-11-21 22:29:15,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98008609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:29:15,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:29:15,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:29:15,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054759407] [2023-11-21 22:29:15,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:29:15,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:29:15,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:29:15,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:29:15,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:29:16,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 519 [2023-11-21 22:29:16,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 470 transitions, 1097 flow. Second operand has 6 states, 6 states have (on average 441.8333333333333) internal successors, (2651), 6 states have internal predecessors, (2651), 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) [2023-11-21 22:29:16,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:29:16,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 519 [2023-11-21 22:29:16,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand