./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme --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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:28,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:28,695 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:47:28,700 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:28,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:28,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:28,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:28,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:28,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:28,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:28,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:28,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:28,758 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:28,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:28,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:28,761 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:28,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:28,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:28,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:28,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:28,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:28,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:28,765 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:47:28,766 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:47:28,766 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:28,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:28,767 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:28,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:28,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:28,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:28,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:28,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:28,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:28,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:28,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:28,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:28,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:28,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:28,774 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:28,775 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:28,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:28,776 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_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2023-11-26 11:47:29,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:29,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:29,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:29,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:29,188 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:29,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-11-26 11:47:32,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:32,742 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:32,743 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-11-26 11:47:32,775 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/data/4e0de17a8/d8505301894b4f8daff54e8a239acbf6/FLAG96b30df8e [2023-11-26 11:47:32,792 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/data/4e0de17a8/d8505301894b4f8daff54e8a239acbf6 [2023-11-26 11:47:32,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:32,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:32,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:32,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:32,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:32,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:32" (1/1) ... [2023-11-26 11:47:32,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aca719b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:32, skipping insertion in model container [2023-11-26 11:47:32,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:32" (1/1) ... [2023-11-26 11:47:32,870 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:33,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:33,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:33,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:33,507 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:33,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33 WrapperNode [2023-11-26 11:47:33,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:33,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:33,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:33,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:33,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,592 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 177 [2023-11-26 11:47:33,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:33,593 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:33,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:33,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:33,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:33,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:33,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:33,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:33,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (1/1) ... [2023-11-26 11:47:33,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:33,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:33,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:33,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a0cde3-f1cb-45d6-bd8a-4b33ab2fabe7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:47:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:47:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:47:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:47:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:47:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:47:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:47:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:47:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-11-26 11:47:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:47:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:47:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:33,750 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:47:33,913 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:33,915 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:34,489 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:34,564 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:34,564 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-26 11:47:34,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:34 BoogieIcfgContainer [2023-11-26 11:47:34,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:34,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:47:34,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:47:34,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:47:34,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:47:32" (1/3) ... [2023-11-26 11:47:34,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d825793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:34, skipping insertion in model container [2023-11-26 11:47:34,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:33" (2/3) ... [2023-11-26 11:47:34,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d825793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:34, skipping insertion in model container [2023-11-26 11:47:34,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:34" (3/3) ... [2023-11-26 11:47:34,578 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-11-26 11:47:34,588 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:47:34,597 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:47:34,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-26 11:47:34,598 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:47:34,690 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:47:34,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 273 transitions, 553 flow [2023-11-26 11:47:34,950 INFO L124 PetriNetUnfolderBase]: 53/410 cut-off events. [2023-11-26 11:47:34,951 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:47:34,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 410 events. 53/410 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2034 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 233. Up to 6 conditions per place. [2023-11-26 11:47:34,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 273 transitions, 553 flow [2023-11-26 11:47:34,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 273 transitions, 553 flow [2023-11-26 11:47:34,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:35,001 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;@6a27785f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:35,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-26 11:47:35,032 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:47:35,032 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-11-26 11:47:35,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:47:35,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:35,033 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] [2023-11-26 11:47:35,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:47:35,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash -874426731, now seen corresponding path program 1 times [2023-11-26 11:47:35,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:35,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985378298] [2023-11-26 11:47:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:35,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:35,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985378298] [2023-11-26 11:47:35,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985378298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:35,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:35,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:47:35,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128123303] [2023-11-26 11:47:35,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:35,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:35,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:35,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 273 [2023-11-26 11:47:35,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 273 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2023-11-26 11:47:35,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:35,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 273 [2023-11-26 11:47:35,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:36,322 INFO L124 PetriNetUnfolderBase]: 229/1774 cut-off events. [2023-11-26 11:47:36,323 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 11:47:36,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 1774 events. 229/1774 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12092 event pairs, 0 based on Foata normal form. 323/1927 useless extension candidates. Maximal degree in co-relation 2164. Up to 454 conditions per place. [2023-11-26 11:47:36,349 INFO L140 encePairwiseOnDemand]: 239/273 looper letters, 44 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2023-11-26 11:47:36,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 242 transitions, 583 flow [2023-11-26 11:47:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2023-11-26 11:47:36,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8583638583638583 [2023-11-26 11:47:36,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2023-11-26 11:47:36,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2023-11-26 11:47:36,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:36,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2023-11-26 11:47:36,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2023-11-26 11:47:36,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-11-26 11:47:36,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-11-26 11:47:36,400 INFO L175 Difference]: Start difference. First operand has 243 places, 273 transitions, 553 flow. Second operand 3 states and 703 transitions. [2023-11-26 11:47:36,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 242 transitions, 583 flow [2023-11-26 11:47:36,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 242 transitions, 583 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:47:36,415 INFO L231 Difference]: Finished difference. Result has 234 places, 230 transitions, 475 flow [2023-11-26 11:47:36,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=475, PETRI_PLACES=234, PETRI_TRANSITIONS=230} [2023-11-26 11:47:36,422 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, -9 predicate places. [2023-11-26 11:47:36,423 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 230 transitions, 475 flow [2023-11-26 11:47:36,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2023-11-26 11:47:36,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:36,425 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] [2023-11-26 11:47:36,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:47:36,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:47:36,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:36,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1794995134, now seen corresponding path program 1 times [2023-11-26 11:47:36,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:36,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14949618] [2023-11-26 11:47:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:36,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:36,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:36,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14949618] [2023-11-26 11:47:36,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14949618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:36,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:36,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:36,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690884822] [2023-11-26 11:47:36,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:36,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:36,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:36,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 273 [2023-11-26 11:47:36,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 230 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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) [2023-11-26 11:47:36,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:36,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 273 [2023-11-26 11:47:36,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:37,306 INFO L124 PetriNetUnfolderBase]: 596/3773 cut-off events. [2023-11-26 11:47:37,306 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 11:47:37,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5024 conditions, 3773 events. 596/3773 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 31985 event pairs, 110 based on Foata normal form. 0/3413 useless extension candidates. Maximal degree in co-relation 4971. Up to 735 conditions per place. [2023-11-26 11:47:37,332 INFO L140 encePairwiseOnDemand]: 258/273 looper letters, 68 selfloop transitions, 10 changer transitions 0/263 dead transitions. [2023-11-26 11:47:37,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 263 transitions, 700 flow [2023-11-26 11:47:37,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-11-26 11:47:37,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8083028083028083 [2023-11-26 11:47:37,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-11-26 11:47:37,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-11-26 11:47:37,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:37,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-11-26 11:47:37,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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) [2023-11-26 11:47:37,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-11-26 11:47:37,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-11-26 11:47:37,344 INFO L175 Difference]: Start difference. First operand has 234 places, 230 transitions, 475 flow. Second operand 3 states and 662 transitions. [2023-11-26 11:47:37,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 263 transitions, 700 flow [2023-11-26 11:47:37,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 263 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:37,359 INFO L231 Difference]: Finished difference. Result has 234 places, 236 transitions, 545 flow [2023-11-26 11:47:37,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=234, PETRI_TRANSITIONS=236} [2023-11-26 11:47:37,361 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, -9 predicate places. [2023-11-26 11:47:37,361 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 236 transitions, 545 flow [2023-11-26 11:47:37,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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) [2023-11-26 11:47:37,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:37,363 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] [2023-11-26 11:47:37,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:47:37,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:47:37,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:37,368 INFO L85 PathProgramCache]: Analyzing trace with hash -970985994, now seen corresponding path program 1 times [2023-11-26 11:47:37,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:37,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248315952] [2023-11-26 11:47:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:37,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:37,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:37,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:37,506 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:47:37,508 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-26 11:47:37,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-26 11:47:37,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-26 11:47:37,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-26 11:47:37,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-26 11:47:37,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-26 11:47:37,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-26 11:47:37,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-26 11:47:37,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-26 11:47:37,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-26 11:47:37,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-26 11:47:37,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-26 11:47:37,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-26 11:47:37,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-26 11:47:37,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-26 11:47:37,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-26 11:47:37,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-26 11:47:37,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-26 11:47:37,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-26 11:47:37,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-26 11:47:37,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-26 11:47:37,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-26 11:47:37,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:47:37,524 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 11:47:37,528 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:47:37,528 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:47:37,583 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:47:37,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 366 transitions, 748 flow [2023-11-26 11:47:37,717 INFO L124 PetriNetUnfolderBase]: 88/672 cut-off events. [2023-11-26 11:47:37,717 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:47:37,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 672 events. 88/672 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3720 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 412. Up to 9 conditions per place. [2023-11-26 11:47:37,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 366 transitions, 748 flow [2023-11-26 11:47:37,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 366 transitions, 748 flow [2023-11-26 11:47:37,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:37,738 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;@6a27785f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:37,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-26 11:47:37,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:47:37,746 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-11-26 11:47:37,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:47:37,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:37,746 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] [2023-11-26 11:47:37,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 11:47:37,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:37,747 INFO L85 PathProgramCache]: Analyzing trace with hash -219726589, now seen corresponding path program 1 times [2023-11-26 11:47:37,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:37,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555481265] [2023-11-26 11:47:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:37,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:37,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:37,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555481265] [2023-11-26 11:47:37,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555481265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:37,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:37,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:47:37,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329931011] [2023-11-26 11:47:37,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:37,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:37,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:37,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:37,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:37,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 366 [2023-11-26 11:47:37,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 366 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2023-11-26 11:47:37,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:37,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 366 [2023-11-26 11:47:37,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:44,035 INFO L124 PetriNetUnfolderBase]: 6064/28562 cut-off events. [2023-11-26 11:47:44,036 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-26 11:47:44,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38161 conditions, 28562 events. 6064/28562 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 357767 event pairs, 5482 based on Foata normal form. 6285/32292 useless extension candidates. Maximal degree in co-relation 2787. Up to 9513 conditions per place. [2023-11-26 11:47:44,437 INFO L140 encePairwiseOnDemand]: 320/366 looper letters, 59 selfloop transitions, 2 changer transitions 0/324 dead transitions. [2023-11-26 11:47:44,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 324 transitions, 786 flow [2023-11-26 11:47:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 931 transitions. [2023-11-26 11:47:44,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8479052823315119 [2023-11-26 11:47:44,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 931 transitions. [2023-11-26 11:47:44,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 931 transitions. [2023-11-26 11:47:44,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:44,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 931 transitions. [2023-11-26 11:47:44,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 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) [2023-11-26 11:47:44,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-26 11:47:44,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-26 11:47:44,456 INFO L175 Difference]: Start difference. First operand has 325 places, 366 transitions, 748 flow. Second operand 3 states and 931 transitions. [2023-11-26 11:47:44,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 324 transitions, 786 flow [2023-11-26 11:47:44,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 324 transitions, 786 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:47:44,473 INFO L231 Difference]: Finished difference. Result has 316 places, 312 transitions, 650 flow [2023-11-26 11:47:44,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=316, PETRI_TRANSITIONS=312} [2023-11-26 11:47:44,478 INFO L281 CegarLoopForPetriNet]: 325 programPoint places, -9 predicate places. [2023-11-26 11:47:44,478 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 312 transitions, 650 flow [2023-11-26 11:47:44,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2023-11-26 11:47:44,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:44,480 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] [2023-11-26 11:47:44,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:47:44,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 11:47:44,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:44,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1352962595, now seen corresponding path program 1 times [2023-11-26 11:47:44,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:44,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082895639] [2023-11-26 11:47:44,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:44,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:44,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:44,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082895639] [2023-11-26 11:47:44,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082895639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:44,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:44,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:44,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267491126] [2023-11-26 11:47:44,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:44,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:44,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:44,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:44,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:44,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 366 [2023-11-26 11:47:44,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 312 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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) [2023-11-26 11:47:44,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:44,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 366 [2023-11-26 11:47:44,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:00,238 INFO L124 PetriNetUnfolderBase]: 30964/108732 cut-off events. [2023-11-26 11:48:00,238 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-11-26 11:48:00,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157252 conditions, 108732 events. 30964/108732 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 1548111 event pairs, 10119 based on Foata normal form. 0/97160 useless extension candidates. Maximal degree in co-relation 157198. Up to 26160 conditions per place. [2023-11-26 11:48:01,123 INFO L140 encePairwiseOnDemand]: 341/366 looper letters, 108 selfloop transitions, 18 changer transitions 0/371 dead transitions. [2023-11-26 11:48:01,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 371 transitions, 1031 flow [2023-11-26 11:48:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:01,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2023-11-26 11:48:01,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8096539162112932 [2023-11-26 11:48:01,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 889 transitions. [2023-11-26 11:48:01,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 889 transitions. [2023-11-26 11:48:01,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:01,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 889 transitions. [2023-11-26 11:48:01,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 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) [2023-11-26 11:48:01,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-26 11:48:01,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-26 11:48:01,149 INFO L175 Difference]: Start difference. First operand has 316 places, 312 transitions, 650 flow. Second operand 3 states and 889 transitions. [2023-11-26 11:48:01,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 371 transitions, 1031 flow [2023-11-26 11:48:01,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 371 transitions, 1029 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:01,163 INFO L231 Difference]: Finished difference. Result has 319 places, 330 transitions, 806 flow [2023-11-26 11:48:01,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=806, PETRI_PLACES=319, PETRI_TRANSITIONS=330} [2023-11-26 11:48:01,166 INFO L281 CegarLoopForPetriNet]: 325 programPoint places, -6 predicate places. [2023-11-26 11:48:01,166 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 330 transitions, 806 flow [2023-11-26 11:48:01,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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) [2023-11-26 11:48:01,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:01,167 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] [2023-11-26 11:48:01,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:48:01,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 11:48:01,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:01,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1869401381, now seen corresponding path program 1 times [2023-11-26 11:48:01,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:01,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655844952] [2023-11-26 11:48:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:01,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:01,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:01,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655844952] [2023-11-26 11:48:01,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655844952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:01,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:01,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:01,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584957162] [2023-11-26 11:48:01,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:01,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:01,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:01,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:01,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:01,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 366 [2023-11-26 11:48:01,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 330 transitions, 806 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 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) [2023-11-26 11:48:01,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:01,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 366 [2023-11-26 11:48:01,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:18,739 INFO L124 PetriNetUnfolderBase]: 30330/121354 cut-off events. [2023-11-26 11:48:18,739 INFO L125 PetriNetUnfolderBase]: For 19664/20120 co-relation queries the response was YES. [2023-11-26 11:48:19,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188355 conditions, 121354 events. 30330/121354 cut-off events. For 19664/20120 co-relation queries the response was YES. Maximal size of possible extension queue 1799. Compared 1821277 event pairs, 21822 based on Foata normal form. 128/110234 useless extension candidates. Maximal degree in co-relation 182580. Up to 42647 conditions per place. [2023-11-26 11:48:19,485 INFO L140 encePairwiseOnDemand]: 355/366 looper letters, 94 selfloop transitions, 18 changer transitions 0/374 dead transitions. [2023-11-26 11:48:19,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 374 transitions, 1168 flow [2023-11-26 11:48:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-11-26 11:48:19,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.802367941712204 [2023-11-26 11:48:19,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-11-26 11:48:19,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-11-26 11:48:19,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:19,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-11-26 11:48:19,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 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) [2023-11-26 11:48:19,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-26 11:48:19,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-26 11:48:19,500 INFO L175 Difference]: Start difference. First operand has 319 places, 330 transitions, 806 flow. Second operand 3 states and 881 transitions. [2023-11-26 11:48:19,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 374 transitions, 1168 flow [2023-11-26 11:48:19,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 374 transitions, 1118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:48:19,586 INFO L231 Difference]: Finished difference. Result has 321 places, 346 transitions, 936 flow [2023-11-26 11:48:19,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=321, PETRI_TRANSITIONS=346} [2023-11-26 11:48:19,588 INFO L281 CegarLoopForPetriNet]: 325 programPoint places, -4 predicate places. [2023-11-26 11:48:19,588 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 346 transitions, 936 flow [2023-11-26 11:48:19,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 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) [2023-11-26 11:48:19,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:19,590 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 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] [2023-11-26 11:48:19,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:48:19,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 11:48:19,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash -474522969, now seen corresponding path program 1 times [2023-11-26 11:48:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620786334] [2023-11-26 11:48:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:19,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:48:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:19,639 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:48:19,639 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:48:19,640 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2023-11-26 11:48:19,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 30 remaining) [2023-11-26 11:48:19,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 30 remaining) [2023-11-26 11:48:19,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (26 of 30 remaining) [2023-11-26 11:48:19,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (25 of 30 remaining) [2023-11-26 11:48:19,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (24 of 30 remaining) [2023-11-26 11:48:19,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (23 of 30 remaining) [2023-11-26 11:48:19,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (22 of 30 remaining) [2023-11-26 11:48:19,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (21 of 30 remaining) [2023-11-26 11:48:19,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (20 of 30 remaining) [2023-11-26 11:48:19,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 30 remaining) [2023-11-26 11:48:19,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 30 remaining) [2023-11-26 11:48:19,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (17 of 30 remaining) [2023-11-26 11:48:19,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (16 of 30 remaining) [2023-11-26 11:48:19,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 30 remaining) [2023-11-26 11:48:19,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 30 remaining) [2023-11-26 11:48:19,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 30 remaining) [2023-11-26 11:48:19,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 30 remaining) [2023-11-26 11:48:19,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 30 remaining) [2023-11-26 11:48:19,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 30 remaining) [2023-11-26 11:48:19,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 30 remaining) [2023-11-26 11:48:19,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 30 remaining) [2023-11-26 11:48:19,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 30 remaining) [2023-11-26 11:48:19,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 30 remaining) [2023-11-26 11:48:19,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 30 remaining) [2023-11-26 11:48:19,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 30 remaining) [2023-11-26 11:48:19,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (3 of 30 remaining) [2023-11-26 11:48:19,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 30 remaining) [2023-11-26 11:48:19,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 30 remaining) [2023-11-26 11:48:19,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 30 remaining) [2023-11-26 11:48:19,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:48:19,648 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-26 11:48:19,649 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:48:19,649 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:48:19,713 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:48:19,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 459 transitions, 945 flow [2023-11-26 11:48:20,201 INFO L124 PetriNetUnfolderBase]: 128/981 cut-off events. [2023-11-26 11:48:20,202 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 11:48:20,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 981 events. 128/981 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5657 event pairs, 1 based on Foata normal form. 0/801 useless extension candidates. Maximal degree in co-relation 680. Up to 16 conditions per place. [2023-11-26 11:48:20,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 407 places, 459 transitions, 945 flow [2023-11-26 11:48:20,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 407 places, 459 transitions, 945 flow [2023-11-26 11:48:20,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:20,220 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;@6a27785f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:20,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-26 11:48:20,225 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:20,225 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-11-26 11:48:20,225 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:20,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:20,226 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] [2023-11-26 11:48:20,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-11-26 11:48:20,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:20,227 INFO L85 PathProgramCache]: Analyzing trace with hash 390103886, now seen corresponding path program 1 times [2023-11-26 11:48:20,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:20,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605371705] [2023-11-26 11:48:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:20,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605371705] [2023-11-26 11:48:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605371705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:20,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335040477] [2023-11-26 11:48:20,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:20,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:20,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:20,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:20,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:20,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 459 [2023-11-26 11:48:20,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 459 transitions, 945 flow. Second operand has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 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) [2023-11-26 11:48:20,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:20,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 459 [2023-11-26 11:48:20,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand