./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-10.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_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/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_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/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_d64878cd-5758-4b8d-817e-37403dffd39c/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 8144e99ab74da6c65d7c38142aa4ddc1b99b688ea06937a7acd153b5a75ad731 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:03:45,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:03:45,986 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 12:03:45,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:03:45,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:03:46,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:03:46,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:03:46,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:03:46,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:03:46,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:03:46,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:03:46,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:03:46,043 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:03:46,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:03:46,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:03:46,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:03:46,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:03:46,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:03:46,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:03:46,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:03:46,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:03:46,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:03:46,049 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 12:03:46,050 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:03:46,050 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:03:46,051 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:03:46,051 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:03:46,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:03:46,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:03:46,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:03:46,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:46,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:03:46,055 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:03:46,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:03:46,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:03:46,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:03:46,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:03:46,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:03:46,057 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:03:46,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:03:46,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:03:46,057 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_d64878cd-5758-4b8d-817e-37403dffd39c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8144e99ab74da6c65d7c38142aa4ddc1b99b688ea06937a7acd153b5a75ad731 [2023-11-26 12:03:46,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:03:46,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:03:46,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:03:46,433 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:03:46,434 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:03:46,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-deagle/floating_read-10.i [2023-11-26 12:03:49,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:03:49,918 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:03:49,919 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/sv-benchmarks/c/pthread-deagle/floating_read-10.i [2023-11-26 12:03:49,946 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/data/12807324d/4210f51cf4a145d7b988df0cfd93bf61/FLAG986ce8706 [2023-11-26 12:03:49,961 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/data/12807324d/4210f51cf4a145d7b988df0cfd93bf61 [2023-11-26 12:03:49,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:03:49,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:03:49,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:49,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:03:49,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:03:49,974 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:49" (1/1) ... [2023-11-26 12:03:49,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75790c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:49, skipping insertion in model container [2023-11-26 12:03:49,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:49" (1/1) ... [2023-11-26 12:03:50,025 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:03:50,409 WARN L1590 CHandler]: Possible shadowing of function thread [2023-11-26 12:03:50,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:50,442 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:03:50,478 WARN L1590 CHandler]: Possible shadowing of function thread [2023-11-26 12:03:50,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:50,525 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:03:50,525 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:03:50,533 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:03:50,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50 WrapperNode [2023-11-26 12:03:50,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:50,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:50,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:03:50,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:03:50,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,555 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,579 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-11-26 12:03:50,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:50,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:03:50,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:03:50,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:03:50,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,595 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,602 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,608 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:03:50,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:03:50,614 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:03:50,614 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:03:50,615 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (1/1) ... [2023-11-26 12:03:50,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:50,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:50,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:03:50,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:03:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 12:03:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 12:03:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:03:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:03:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:03:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:03:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 12:03:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-26 12:03:50,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-26 12:03:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:03:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:03:50,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:03:50,717 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 12:03:50,918 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:03:50,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:03:51,103 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:03:51,132 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:03:51,132 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 12:03:51,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:51 BoogieIcfgContainer [2023-11-26 12:03:51,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:03:51,173 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:03:51,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:03:51,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:03:51,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:03:49" (1/3) ... [2023-11-26 12:03:51,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4d5d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:51, skipping insertion in model container [2023-11-26 12:03:51,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:50" (2/3) ... [2023-11-26 12:03:51,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4d5d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:51, skipping insertion in model container [2023-11-26 12:03:51,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:51" (3/3) ... [2023-11-26 12:03:51,179 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-10.i [2023-11-26 12:03:51,221 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:03:51,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:03:51,235 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 12:03:51,235 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:03:51,296 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 12:03:51,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 72 transitions, 151 flow [2023-11-26 12:03:51,382 INFO L124 PetriNetUnfolderBase]: 9/110 cut-off events. [2023-11-26 12:03:51,382 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:03:51,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 9/110 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 221 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-11-26 12:03:51,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 72 transitions, 151 flow [2023-11-26 12:03:51,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 72 transitions, 151 flow [2023-11-26 12:03:51,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:51,410 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;@1e4f3e04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:51,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 12:03:51,416 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:03:51,416 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-26 12:03:51,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:03:51,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:51,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:51,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-26 12:03:51,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash 147015405, now seen corresponding path program 1 times [2023-11-26 12:03:51,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:51,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363937811] [2023-11-26 12:03:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:51,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:51,626 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 12:03:51,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:51,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363937811] [2023-11-26 12:03:51,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363937811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:51,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:51,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:03:51,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120767982] [2023-11-26 12:03:51,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:51,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:03:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:51,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:03:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:03:51,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 72 [2023-11-26 12:03:51,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 151 flow. Second operand has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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 12:03:51,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:51,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 72 [2023-11-26 12:03:51,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:51,744 INFO L124 PetriNetUnfolderBase]: 1/94 cut-off events. [2023-11-26 12:03:51,744 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2023-11-26 12:03:51,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 94 events. 1/94 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 0 based on Foata normal form. 8/92 useless extension candidates. Maximal degree in co-relation 4. Up to 5 conditions per place. [2023-11-26 12:03:51,746 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 4 selfloop transitions, 0 changer transitions 12/63 dead transitions. [2023-11-26 12:03:51,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 141 flow [2023-11-26 12:03:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:03:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:03:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 132 transitions. [2023-11-26 12:03:51,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2023-11-26 12:03:51,760 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 132 transitions. [2023-11-26 12:03:51,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 132 transitions. [2023-11-26 12:03:51,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:51,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 132 transitions. [2023-11-26 12:03:51,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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 12:03:51,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 12:03:51,770 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 12:03:51,771 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 151 flow. Second operand 2 states and 132 transitions. [2023-11-26 12:03:51,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 141 flow [2023-11-26 12:03:51,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 141 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:51,778 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 109 flow [2023-11-26 12:03:51,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=109, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2023-11-26 12:03:51,784 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-11-26 12:03:51,784 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 109 flow [2023-11-26 12:03:51,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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 12:03:51,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:51,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:51,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:03:51,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-26 12:03:51,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash 215940231, now seen corresponding path program 1 times [2023-11-26 12:03:51,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:51,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808440584] [2023-11-26 12:03:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:51,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:51,906 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 12:03:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808440584] [2023-11-26 12:03:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808440584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:51,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:51,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:51,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414354498] [2023-11-26 12:03:51,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:51,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:51,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:51,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 72 [2023-11-26 12:03:51,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 12:03:51,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:51,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 72 [2023-11-26 12:03:51,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:51,980 INFO L124 PetriNetUnfolderBase]: 3/88 cut-off events. [2023-11-26 12:03:51,980 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 12:03:51,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 88 events. 3/88 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 106. Up to 13 conditions per place. [2023-11-26 12:03:51,981 INFO L140 encePairwiseOnDemand]: 69/72 looper letters, 8 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-26 12:03:51,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 131 flow [2023-11-26 12:03:51,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:51,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2023-11-26 12:03:51,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2023-11-26 12:03:51,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2023-11-26 12:03:51,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2023-11-26 12:03:51,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:51,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2023-11-26 12:03:51,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 12:03:51,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:51,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:51,992 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 109 flow. Second operand 3 states and 176 transitions. [2023-11-26 12:03:51,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 131 flow [2023-11-26 12:03:51,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 131 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:51,995 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 117 flow [2023-11-26 12:03:51,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-11-26 12:03:51,996 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-11-26 12:03:51,997 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 117 flow [2023-11-26 12:03:51,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 12:03:51,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:51,997 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] [2023-11-26 12:03:51,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:03:51,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-26 12:03:51,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:51,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1091214200, now seen corresponding path program 1 times [2023-11-26 12:03:51,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:51,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903375093] [2023-11-26 12:03:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:52,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:52,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903375093] [2023-11-26 12:03:52,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903375093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652893862] [2023-11-26 12:03:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:52,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:52,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:52,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:52,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:03:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:52,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:03:52,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:03:52,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:52,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652893862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:52,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:52,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 12:03:52,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112969911] [2023-11-26 12:03:52,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:52,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:52,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:52,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:52,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:03:52,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 72 [2023-11-26 12:03:52,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 12:03:52,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:52,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 72 [2023-11-26 12:03:52,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:52,508 INFO L124 PetriNetUnfolderBase]: 1/95 cut-off events. [2023-11-26 12:03:52,514 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2023-11-26 12:03:52,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 95 events. 1/95 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2023-11-26 12:03:52,515 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 7 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-11-26 12:03:52,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 146 flow [2023-11-26 12:03:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-11-26 12:03:52,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8564814814814815 [2023-11-26 12:03:52,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-11-26 12:03:52,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-11-26 12:03:52,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:52,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-11-26 12:03:52,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 12:03:52,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:52,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:52,532 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 117 flow. Second operand 3 states and 185 transitions. [2023-11-26 12:03:52,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 146 flow [2023-11-26 12:03:52,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:03:52,537 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 135 flow [2023-11-26 12:03:52,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-26 12:03:52,539 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-11-26 12:03:52,540 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 135 flow [2023-11-26 12:03:52,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 12:03:52,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:52,541 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:52,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:52,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:52,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-26 12:03:52,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash 531800422, now seen corresponding path program 1 times [2023-11-26 12:03:52,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:52,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847525897] [2023-11-26 12:03:52,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:52,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:52,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:03:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:52,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:03:52,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:03:52,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-26 12:03:52,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2023-11-26 12:03:52,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2023-11-26 12:03:52,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2023-11-26 12:03:52,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2023-11-26 12:03:52,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2023-11-26 12:03:52,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:03:52,835 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-26 12:03:52,838 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:03:52,838 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 12:03:52,861 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 12:03:52,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions, 176 flow [2023-11-26 12:03:52,900 INFO L124 PetriNetUnfolderBase]: 16/189 cut-off events. [2023-11-26 12:03:52,900 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 12:03:52,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 189 events. 16/189 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 112. Up to 8 conditions per place. [2023-11-26 12:03:52,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 80 transitions, 176 flow [2023-11-26 12:03:52,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 80 transitions, 176 flow [2023-11-26 12:03:52,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:52,906 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;@1e4f3e04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:52,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 12:03:52,909 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:03:52,909 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-26 12:03:52,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:03:52,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:52,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:52,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-26 12:03:52,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1303842029, now seen corresponding path program 1 times [2023-11-26 12:03:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:52,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101844239] [2023-11-26 12:03:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:52,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:52,933 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 12:03:52,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:52,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101844239] [2023-11-26 12:03:52,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101844239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:52,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:52,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:03:52,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812876870] [2023-11-26 12:03:52,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:52,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:03:52,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:52,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:03:52,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:03:52,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 80 [2023-11-26 12:03:52,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 176 flow. Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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 12:03:52,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:52,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 80 [2023-11-26 12:03:52,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:52,990 INFO L124 PetriNetUnfolderBase]: 7/199 cut-off events. [2023-11-26 12:03:52,990 INFO L125 PetriNetUnfolderBase]: For 31/40 co-relation queries the response was YES. [2023-11-26 12:03:52,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 199 events. 7/199 cut-off events. For 31/40 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 562 event pairs, 4 based on Foata normal form. 15/192 useless extension candidates. Maximal degree in co-relation 104. Up to 18 conditions per place. [2023-11-26 12:03:52,993 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 7 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2023-11-26 12:03:52,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 170 flow [2023-11-26 12:03:52,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:03:52,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:03:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 144 transitions. [2023-11-26 12:03:52,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9 [2023-11-26 12:03:52,996 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 144 transitions. [2023-11-26 12:03:52,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 144 transitions. [2023-11-26 12:03:52,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:52,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 144 transitions. [2023-11-26 12:03:52,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 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 12:03:52,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 12:03:52,999 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 12:03:52,999 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 176 flow. Second operand 2 states and 144 transitions. [2023-11-26 12:03:52,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 170 flow [2023-11-26 12:03:53,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:53,003 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 156 flow [2023-11-26 12:03:53,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2023-11-26 12:03:53,004 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -5 predicate places. [2023-11-26 12:03:53,004 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 156 flow [2023-11-26 12:03:53,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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 12:03:53,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:53,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:53,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:03:53,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-26 12:03:53,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:53,009 INFO L85 PathProgramCache]: Analyzing trace with hash -874257705, now seen corresponding path program 1 times [2023-11-26 12:03:53,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:53,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799584879] [2023-11-26 12:03:53,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:53,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:53,055 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 12:03:53,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:53,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799584879] [2023-11-26 12:03:53,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799584879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:53,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:53,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102742744] [2023-11-26 12:03:53,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:53,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:53,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:53,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 80 [2023-11-26 12:03:53,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 12:03:53,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:53,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 80 [2023-11-26 12:03:53,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:53,139 INFO L124 PetriNetUnfolderBase]: 28/290 cut-off events. [2023-11-26 12:03:53,140 INFO L125 PetriNetUnfolderBase]: For 27/30 co-relation queries the response was YES. [2023-11-26 12:03:53,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 290 events. 28/290 cut-off events. For 27/30 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1214 event pairs, 10 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 371. Up to 65 conditions per place. [2023-11-26 12:03:53,143 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 12 selfloop transitions, 2 changer transitions 3/72 dead transitions. [2023-11-26 12:03:53,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 190 flow [2023-11-26 12:03:53,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-26 12:03:53,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8041666666666667 [2023-11-26 12:03:53,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-26 12:03:53,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-26 12:03:53,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:53,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-26 12:03:53,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 12:03:53,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 12:03:53,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 12:03:53,150 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 156 flow. Second operand 3 states and 193 transitions. [2023-11-26 12:03:53,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 190 flow [2023-11-26 12:03:53,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:53,154 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 162 flow [2023-11-26 12:03:53,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2023-11-26 12:03:53,155 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2023-11-26 12:03:53,156 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 162 flow [2023-11-26 12:03:53,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 12:03:53,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:53,157 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] [2023-11-26 12:03:53,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:03:53,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-26 12:03:53,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2054848402, now seen corresponding path program 1 times [2023-11-26 12:03:53,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:53,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985950882] [2023-11-26 12:03:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:53,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:53,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:53,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985950882] [2023-11-26 12:03:53,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985950882] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:53,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200357640] [2023-11-26 12:03:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:53,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:53,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:53,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:53,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:03:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:53,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:03:53,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:03:53,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200357640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:53,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:53,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 12:03:53,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115481156] [2023-11-26 12:03:53,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:53,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:53,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:53,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:53,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:03:53,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 80 [2023-11-26 12:03:53,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 12:03:53,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:53,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 80 [2023-11-26 12:03:53,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:53,532 INFO L124 PetriNetUnfolderBase]: 23/381 cut-off events. [2023-11-26 12:03:53,533 INFO L125 PetriNetUnfolderBase]: For 52/62 co-relation queries the response was YES. [2023-11-26 12:03:53,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 381 events. 23/381 cut-off events. For 52/62 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1938 event pairs, 6 based on Foata normal form. 3/341 useless extension candidates. Maximal degree in co-relation 470. Up to 41 conditions per place. [2023-11-26 12:03:53,539 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 11 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2023-11-26 12:03:53,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 208 flow [2023-11-26 12:03:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-11-26 12:03:53,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8416666666666667 [2023-11-26 12:03:53,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-11-26 12:03:53,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-11-26 12:03:53,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:53,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-11-26 12:03:53,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 12:03:53,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 12:03:53,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 12:03:53,551 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 162 flow. Second operand 3 states and 202 transitions. [2023-11-26 12:03:53,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 208 flow [2023-11-26 12:03:53,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:03:53,565 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 190 flow [2023-11-26 12:03:53,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-11-26 12:03:53,568 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2023-11-26 12:03:53,568 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 190 flow [2023-11-26 12:03:53,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 12:03:53,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:53,569 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] [2023-11-26 12:03:53,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 12:03:53,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-26 12:03:53,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -178159705, now seen corresponding path program 1 times [2023-11-26 12:03:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:53,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817528060] [2023-11-26 12:03:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:53,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:53,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:53,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817528060] [2023-11-26 12:03:53,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817528060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:53,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896163915] [2023-11-26 12:03:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:53,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:53,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:53,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:53,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:03:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:54,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:03:54,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:54,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:54,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896163915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:03:54,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:03:54,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 12:03:54,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256911544] [2023-11-26 12:03:54,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:54,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:03:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:03:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:03:54,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 80 [2023-11-26 12:03:54,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 190 flow. Second operand has 10 states, 10 states have (on average 58.3) internal successors, (583), 10 states have internal predecessors, (583), 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 12:03:54,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:54,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 80 [2023-11-26 12:03:54,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:54,367 INFO L124 PetriNetUnfolderBase]: 22/111 cut-off events. [2023-11-26 12:03:54,367 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-26 12:03:54,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 111 events. 22/111 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 296 event pairs, 0 based on Foata normal form. 6/117 useless extension candidates. Maximal degree in co-relation 207. Up to 26 conditions per place. [2023-11-26 12:03:54,368 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 18 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-11-26 12:03:54,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 190 flow [2023-11-26 12:03:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:03:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:03:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 531 transitions. [2023-11-26 12:03:54,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375 [2023-11-26 12:03:54,373 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 531 transitions. [2023-11-26 12:03:54,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 531 transitions. [2023-11-26 12:03:54,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:54,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 531 transitions. [2023-11-26 12:03:54,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 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 12:03:54,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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 12:03:54,379 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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 12:03:54,380 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 190 flow. Second operand 9 states and 531 transitions. [2023-11-26 12:03:54,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 190 flow [2023-11-26 12:03:54,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:54,382 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 114 flow [2023-11-26 12:03:54,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=114, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-11-26 12:03:54,385 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -24 predicate places. [2023-11-26 12:03:54,385 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 114 flow [2023-11-26 12:03:54,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.3) internal successors, (583), 10 states have internal predecessors, (583), 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 12:03:54,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:54,386 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] [2023-11-26 12:03:54,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 12:03:54,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:54,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-26 12:03:54,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1058452712, now seen corresponding path program 1 times [2023-11-26 12:03:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:54,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845556586] [2023-11-26 12:03:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:54,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:03:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:54,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:03:54,632 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:03:54,632 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-26 12:03:54,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-26 12:03:54,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-26 12:03:54,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-26 12:03:54,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-26 12:03:54,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-26 12:03:54,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-26 12:03:54,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:03:54,634 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 12:03:54,635 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:03:54,635 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 12:03:54,655 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 12:03:54,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 203 flow [2023-11-26 12:03:54,697 INFO L124 PetriNetUnfolderBase]: 28/317 cut-off events. [2023-11-26 12:03:54,697 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 12:03:54,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 317 events. 28/317 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 918 event pairs, 1 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 197. Up to 16 conditions per place. [2023-11-26 12:03:54,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 88 transitions, 203 flow [2023-11-26 12:03:54,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 88 transitions, 203 flow [2023-11-26 12:03:54,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:54,703 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;@1e4f3e04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:54,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-26 12:03:54,705 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:03:54,705 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-26 12:03:54,705 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:03:54,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:54,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:54,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 12:03:54,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:54,707 INFO L85 PathProgramCache]: Analyzing trace with hash 858364397, now seen corresponding path program 1 times [2023-11-26 12:03:54,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:54,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100721243] [2023-11-26 12:03:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:54,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:54,720 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 12:03:54,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:54,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100721243] [2023-11-26 12:03:54,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100721243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:54,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:54,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:03:54,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081463826] [2023-11-26 12:03:54,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:54,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:03:54,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:54,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:03:54,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:03:54,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 88 [2023-11-26 12:03:54,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 203 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 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 12:03:54,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:54,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 88 [2023-11-26 12:03:54,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:54,825 INFO L124 PetriNetUnfolderBase]: 36/483 cut-off events. [2023-11-26 12:03:54,825 INFO L125 PetriNetUnfolderBase]: For 126/181 co-relation queries the response was YES. [2023-11-26 12:03:54,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 483 events. 36/483 cut-off events. For 126/181 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2251 event pairs, 27 based on Foata normal form. 31/458 useless extension candidates. Maximal degree in co-relation 306. Up to 68 conditions per place. [2023-11-26 12:03:54,829 INFO L140 encePairwiseOnDemand]: 80/88 looper letters, 10 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2023-11-26 12:03:54,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 201 flow [2023-11-26 12:03:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:03:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:03:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2023-11-26 12:03:54,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8863636363636364 [2023-11-26 12:03:54,830 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 156 transitions. [2023-11-26 12:03:54,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 156 transitions. [2023-11-26 12:03:54,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:54,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 156 transitions. [2023-11-26 12:03:54,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 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 12:03:54,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 12:03:54,833 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 12:03:54,833 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 203 flow. Second operand 2 states and 156 transitions. [2023-11-26 12:03:54,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 201 flow [2023-11-26 12:03:54,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 201 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:54,838 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 181 flow [2023-11-26 12:03:54,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=181, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2023-11-26 12:03:54,842 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -6 predicate places. [2023-11-26 12:03:54,842 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 181 flow [2023-11-26 12:03:54,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 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 12:03:54,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:54,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:54,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:03:54,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 12:03:54,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:54,843 INFO L85 PathProgramCache]: Analyzing trace with hash 503504943, now seen corresponding path program 1 times [2023-11-26 12:03:54,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:54,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209756742] [2023-11-26 12:03:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:54,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:54,881 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 12:03:54,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:54,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209756742] [2023-11-26 12:03:54,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209756742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:54,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:54,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:54,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426405419] [2023-11-26 12:03:54,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:54,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:54,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:54,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:54,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:54,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 88 [2023-11-26 12:03:54,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 12:03:54,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:54,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 88 [2023-11-26 12:03:54,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:55,030 INFO L124 PetriNetUnfolderBase]: 120/720 cut-off events. [2023-11-26 12:03:55,030 INFO L125 PetriNetUnfolderBase]: For 145/175 co-relation queries the response was YES. [2023-11-26 12:03:55,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 720 events. 120/720 cut-off events. For 145/175 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4007 event pairs, 64 based on Foata normal form. 1/653 useless extension candidates. Maximal degree in co-relation 995. Up to 219 conditions per place. [2023-11-26 12:03:55,037 INFO L140 encePairwiseOnDemand]: 85/88 looper letters, 15 selfloop transitions, 2 changer transitions 3/79 dead transitions. [2023-11-26 12:03:55,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 221 flow [2023-11-26 12:03:55,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:55,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-11-26 12:03:55,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2023-11-26 12:03:55,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-11-26 12:03:55,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-11-26 12:03:55,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:55,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-11-26 12:03:55,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 12:03:55,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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 12:03:55,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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 12:03:55,042 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 181 flow. Second operand 3 states and 208 transitions. [2023-11-26 12:03:55,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 221 flow [2023-11-26 12:03:55,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:55,047 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 187 flow [2023-11-26 12:03:55,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2023-11-26 12:03:55,049 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2023-11-26 12:03:55,049 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 187 flow [2023-11-26 12:03:55,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 12:03:55,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:55,050 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] [2023-11-26 12:03:55,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:03:55,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 12:03:55,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:55,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1668019036, now seen corresponding path program 1 times [2023-11-26 12:03:55,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:55,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714007046] [2023-11-26 12:03:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:55,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:55,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:55,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714007046] [2023-11-26 12:03:55,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714007046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:55,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421791588] [2023-11-26 12:03:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:55,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:55,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:55,137 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:55,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:03:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:55,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:03:55,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:03:55,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:55,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421791588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:55,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:55,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 12:03:55,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544462739] [2023-11-26 12:03:55,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:55,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:55,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:55,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:55,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:03:55,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 88 [2023-11-26 12:03:55,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 12:03:55,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:55,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 88 [2023-11-26 12:03:55,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:55,456 INFO L124 PetriNetUnfolderBase]: 123/1129 cut-off events. [2023-11-26 12:03:55,456 INFO L125 PetriNetUnfolderBase]: For 226/283 co-relation queries the response was YES. [2023-11-26 12:03:55,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 1129 events. 123/1129 cut-off events. For 226/283 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8069 event pairs, 40 based on Foata normal form. 6/1003 useless extension candidates. Maximal degree in co-relation 1451. Up to 166 conditions per place. [2023-11-26 12:03:55,465 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 15 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2023-11-26 12:03:55,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 250 flow [2023-11-26 12:03:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2023-11-26 12:03:55,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8295454545454546 [2023-11-26 12:03:55,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2023-11-26 12:03:55,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2023-11-26 12:03:55,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:55,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2023-11-26 12:03:55,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 12:03:55,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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 12:03:55,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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 12:03:55,470 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 187 flow. Second operand 3 states and 219 transitions. [2023-11-26 12:03:55,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 250 flow [2023-11-26 12:03:55,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:03:55,473 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 223 flow [2023-11-26 12:03:55,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-11-26 12:03:55,474 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2023-11-26 12:03:55,475 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 223 flow [2023-11-26 12:03:55,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 12:03:55,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:55,475 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] [2023-11-26 12:03:55,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 12:03:55,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:55,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 12:03:55,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash 818936225, now seen corresponding path program 1 times [2023-11-26 12:03:55,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:55,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149536021] [2023-11-26 12:03:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:55,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:55,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:55,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149536021] [2023-11-26 12:03:55,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149536021] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:55,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468829419] [2023-11-26 12:03:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:55,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:55,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:55,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:03:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:55,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:03:55,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:55,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:55,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468829419] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:03:55,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:03:55,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 12:03:55,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813391191] [2023-11-26 12:03:55,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:55,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:03:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:03:55,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:03:55,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 88 [2023-11-26 12:03:55,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 223 flow. Second operand has 10 states, 10 states have (on average 62.3) internal successors, (623), 10 states have internal predecessors, (623), 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 12:03:55,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:55,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 88 [2023-11-26 12:03:55,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:56,262 INFO L124 PetriNetUnfolderBase]: 192/1240 cut-off events. [2023-11-26 12:03:56,263 INFO L125 PetriNetUnfolderBase]: For 463/486 co-relation queries the response was YES. [2023-11-26 12:03:56,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 1240 events. 192/1240 cut-off events. For 463/486 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8382 event pairs, 30 based on Foata normal form. 6/1151 useless extension candidates. Maximal degree in co-relation 1942. Up to 218 conditions per place. [2023-11-26 12:03:56,272 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 33 selfloop transitions, 9 changer transitions 0/99 dead transitions. [2023-11-26 12:03:56,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 99 transitions, 373 flow [2023-11-26 12:03:56,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:03:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:03:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 581 transitions. [2023-11-26 12:03:56,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7335858585858586 [2023-11-26 12:03:56,276 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 581 transitions. [2023-11-26 12:03:56,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 581 transitions. [2023-11-26 12:03:56,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:56,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 581 transitions. [2023-11-26 12:03:56,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.55555555555556) internal successors, (581), 9 states have internal predecessors, (581), 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 12:03:56,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 88.0) internal successors, (880), 10 states have internal predecessors, (880), 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 12:03:56,281 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 88.0) internal successors, (880), 10 states have internal predecessors, (880), 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 12:03:56,282 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 223 flow. Second operand 9 states and 581 transitions. [2023-11-26 12:03:56,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 99 transitions, 373 flow [2023-11-26 12:03:56,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:03:56,287 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 263 flow [2023-11-26 12:03:56,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=263, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-11-26 12:03:56,288 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2023-11-26 12:03:56,288 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 263 flow [2023-11-26 12:03:56,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.3) internal successors, (623), 10 states have internal predecessors, (623), 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 12:03:56,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:56,289 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:56,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:56,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 12:03:56,495 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 12:03:56,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash 318234519, now seen corresponding path program 1 times [2023-11-26 12:03:56,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:56,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377295289] [2023-11-26 12:03:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:56,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:56,522 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:03:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:56,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:03:56,554 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:03:56,554 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-26 12:03:56,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-11-26 12:03:56,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-11-26 12:03:56,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-11-26 12:03:56,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-11-26 12:03:56,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-11-26 12:03:56,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-11-26 12:03:56,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-11-26 12:03:56,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:03:56,556 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 12:03:56,557 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:03:56,557 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-26 12:03:56,612 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 12:03:56,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 96 transitions, 232 flow [2023-11-26 12:03:56,681 INFO L124 PetriNetUnfolderBase]: 52/545 cut-off events. [2023-11-26 12:03:56,681 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-26 12:03:56,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 545 events. 52/545 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2029 event pairs, 6 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 337. Up to 32 conditions per place. [2023-11-26 12:03:56,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 96 transitions, 232 flow [2023-11-26 12:03:56,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 96 transitions, 232 flow [2023-11-26 12:03:56,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:56,689 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;@1e4f3e04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:56,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-26 12:03:56,691 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:03:56,691 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-26 12:03:56,692 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:03:56,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:56,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:56,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-26 12:03:56,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:56,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1189417491, now seen corresponding path program 1 times [2023-11-26 12:03:56,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:56,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925186083] [2023-11-26 12:03:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:56,710 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 12:03:56,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925186083] [2023-11-26 12:03:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925186083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:56,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:56,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:03:56,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444812013] [2023-11-26 12:03:56,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:56,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:03:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:03:56,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:03:56,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 96 [2023-11-26 12:03:56,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 232 flow. Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 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 12:03:56,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:56,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 96 [2023-11-26 12:03:56,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:56,922 INFO L124 PetriNetUnfolderBase]: 157/1321 cut-off events. [2023-11-26 12:03:56,923 INFO L125 PetriNetUnfolderBase]: For 486/771 co-relation queries the response was YES. [2023-11-26 12:03:56,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 1321 events. 157/1321 cut-off events. For 486/771 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 9023 event pairs, 128 based on Foata normal form. 77/1239 useless extension candidates. Maximal degree in co-relation 968. Up to 250 conditions per place. [2023-11-26 12:03:56,933 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 13 selfloop transitions, 0 changer transitions 0/84 dead transitions. [2023-11-26 12:03:56,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 84 transitions, 234 flow [2023-11-26 12:03:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:03:56,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:03:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 168 transitions. [2023-11-26 12:03:56,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.875 [2023-11-26 12:03:56,935 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 168 transitions. [2023-11-26 12:03:56,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 168 transitions. [2023-11-26 12:03:56,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:56,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 168 transitions. [2023-11-26 12:03:56,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 84.0) internal successors, (168), 2 states have internal predecessors, (168), 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 12:03:56,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:56,938 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:56,938 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 232 flow. Second operand 2 states and 168 transitions. [2023-11-26 12:03:56,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 84 transitions, 234 flow [2023-11-26 12:03:56,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:56,941 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 208 flow [2023-11-26 12:03:56,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=208, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-11-26 12:03:56,942 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -7 predicate places. [2023-11-26 12:03:56,942 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 208 flow [2023-11-26 12:03:56,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 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 12:03:56,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:56,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:56,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 12:03:56,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-26 12:03:56,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash 54260879, now seen corresponding path program 1 times [2023-11-26 12:03:56,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:56,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222291465] [2023-11-26 12:03:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:56,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:56,978 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 12:03:56,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:56,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222291465] [2023-11-26 12:03:56,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222291465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:56,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:56,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967676811] [2023-11-26 12:03:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:56,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:56,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:56,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:56,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:56,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 96 [2023-11-26 12:03:56,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 12:03:56,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:56,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 96 [2023-11-26 12:03:56,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:57,322 INFO L124 PetriNetUnfolderBase]: 436/1882 cut-off events. [2023-11-26 12:03:57,322 INFO L125 PetriNetUnfolderBase]: For 510/691 co-relation queries the response was YES. [2023-11-26 12:03:57,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2774 conditions, 1882 events. 436/1882 cut-off events. For 510/691 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13239 event pairs, 278 based on Foata normal form. 1/1679 useless extension candidates. Maximal degree in co-relation 2767. Up to 697 conditions per place. [2023-11-26 12:03:57,336 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 18 selfloop transitions, 2 changer transitions 3/86 dead transitions. [2023-11-26 12:03:57,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 86 transitions, 254 flow [2023-11-26 12:03:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-26 12:03:57,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7743055555555556 [2023-11-26 12:03:57,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-26 12:03:57,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-26 12:03:57,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:57,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-26 12:03:57,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 12:03:57,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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 12:03:57,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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 12:03:57,341 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 208 flow. Second operand 3 states and 223 transitions. [2023-11-26 12:03:57,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 86 transitions, 254 flow [2023-11-26 12:03:57,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 86 transitions, 254 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:57,345 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 214 flow [2023-11-26 12:03:57,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2023-11-26 12:03:57,347 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -4 predicate places. [2023-11-26 12:03:57,347 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 214 flow [2023-11-26 12:03:57,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 12:03:57,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:57,348 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] [2023-11-26 12:03:57,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 12:03:57,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-26 12:03:57,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:57,349 INFO L85 PathProgramCache]: Analyzing trace with hash 625085374, now seen corresponding path program 1 times [2023-11-26 12:03:57,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:57,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294864893] [2023-11-26 12:03:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:57,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:57,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:57,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294864893] [2023-11-26 12:03:57,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294864893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:57,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218768793] [2023-11-26 12:03:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:57,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:57,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:57,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:57,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:03:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:57,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:03:57,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:03:57,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:57,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218768793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:57,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:57,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 12:03:57,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711827575] [2023-11-26 12:03:57,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:57,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:57,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:57,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:57,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:03:57,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 96 [2023-11-26 12:03:57,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:57,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:57,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 96 [2023-11-26 12:03:57,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:58,088 INFO L124 PetriNetUnfolderBase]: 492/3338 cut-off events. [2023-11-26 12:03:58,088 INFO L125 PetriNetUnfolderBase]: For 872/1113 co-relation queries the response was YES. [2023-11-26 12:03:58,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4431 conditions, 3338 events. 492/3338 cut-off events. For 872/1113 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 30421 event pairs, 183 based on Foata normal form. 10/2968 useless extension candidates. Maximal degree in co-relation 4422. Up to 584 conditions per place. [2023-11-26 12:03:58,117 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 19 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-26 12:03:58,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 91 transitions, 294 flow [2023-11-26 12:03:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:58,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-26 12:03:58,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8194444444444444 [2023-11-26 12:03:58,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-26 12:03:58,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-26 12:03:58,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:58,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-26 12:03:58,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:58,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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 12:03:58,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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 12:03:58,122 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 214 flow. Second operand 3 states and 236 transitions. [2023-11-26 12:03:58,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 91 transitions, 294 flow [2023-11-26 12:03:58,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:03:58,127 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 258 flow [2023-11-26 12:03:58,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-11-26 12:03:58,128 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -4 predicate places. [2023-11-26 12:03:58,128 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 258 flow [2023-11-26 12:03:58,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:58,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:58,129 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] [2023-11-26 12:03:58,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:58,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 12:03:58,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-26 12:03:58,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:58,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1057485011, now seen corresponding path program 1 times [2023-11-26 12:03:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:58,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202839467] [2023-11-26 12:03:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:58,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:58,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:58,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202839467] [2023-11-26 12:03:58,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202839467] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:58,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849192432] [2023-11-26 12:03:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:58,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:58,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:58,434 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:58,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:03:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:58,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:03:58,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:58,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:58,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849192432] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:03:58,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:03:58,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 12:03:58,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728810419] [2023-11-26 12:03:58,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:58,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:03:58,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:58,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:03:58,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:03:58,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 96 [2023-11-26 12:03:58,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 258 flow. Second operand has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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 12:03:58,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:58,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 96 [2023-11-26 12:03:58,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:59,301 INFO L124 PetriNetUnfolderBase]: 753/3686 cut-off events. [2023-11-26 12:03:59,301 INFO L125 PetriNetUnfolderBase]: For 1681/1780 co-relation queries the response was YES. [2023-11-26 12:03:59,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6128 conditions, 3686 events. 753/3686 cut-off events. For 1681/1780 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 32518 event pairs, 127 based on Foata normal form. 6/3397 useless extension candidates. Maximal degree in co-relation 6118. Up to 854 conditions per place. [2023-11-26 12:03:59,335 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 38 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2023-11-26 12:03:59,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 422 flow [2023-11-26 12:03:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:03:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:03:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 621 transitions. [2023-11-26 12:03:59,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.71875 [2023-11-26 12:03:59,339 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 621 transitions. [2023-11-26 12:03:59,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 621 transitions. [2023-11-26 12:03:59,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:59,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 621 transitions. [2023-11-26 12:03:59,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 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 12:03:59,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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 12:03:59,345 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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 12:03:59,346 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 258 flow. Second operand 9 states and 621 transitions. [2023-11-26 12:03:59,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 422 flow [2023-11-26 12:03:59,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 108 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:03:59,351 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 296 flow [2023-11-26 12:03:59,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=296, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2023-11-26 12:03:59,352 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 5 predicate places. [2023-11-26 12:03:59,353 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 296 flow [2023-11-26 12:03:59,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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 12:03:59,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:59,354 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-26 12:03:59,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:59,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 12:03:59,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-26 12:03:59,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2078783854, now seen corresponding path program 1 times [2023-11-26 12:03:59,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:59,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021672147] [2023-11-26 12:03:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:59,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:59,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:59,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021672147] [2023-11-26 12:03:59,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021672147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:59,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500861098] [2023-11-26 12:03:59,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:59,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:59,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:59,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:59,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:03:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:59,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:03:59,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:59,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:04:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:00,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500861098] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:04:00,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:04:00,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-26 12:04:00,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574838929] [2023-11-26 12:04:00,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:04:00,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 12:04:00,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 12:04:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:04:00,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 96 [2023-11-26 12:04:00,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 296 flow. Second operand has 18 states, 18 states have (on average 66.38888888888889) internal successors, (1195), 18 states have internal predecessors, (1195), 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 12:04:00,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:00,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 96 [2023-11-26 12:04:00,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:00,409 INFO L124 PetriNetUnfolderBase]: 230/595 cut-off events. [2023-11-26 12:04:00,409 INFO L125 PetriNetUnfolderBase]: For 562/562 co-relation queries the response was YES. [2023-11-26 12:04:00,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 595 events. 230/595 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2949 event pairs, 0 based on Foata normal form. 24/619 useless extension candidates. Maximal degree in co-relation 1494. Up to 246 conditions per place. [2023-11-26 12:04:00,419 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 45 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2023-11-26 12:04:00,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 454 flow [2023-11-26 12:04:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 12:04:00,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 12:04:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1020 transitions. [2023-11-26 12:04:00,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2023-11-26 12:04:00,425 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1020 transitions. [2023-11-26 12:04:00,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1020 transitions. [2023-11-26 12:04:00,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:00,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1020 transitions. [2023-11-26 12:04:00,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 68.0) internal successors, (1020), 15 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 12:04:00,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 96.0) internal successors, (1536), 16 states have internal predecessors, (1536), 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 12:04:00,434 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 96.0) internal successors, (1536), 16 states have internal predecessors, (1536), 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 12:04:00,435 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 296 flow. Second operand 15 states and 1020 transitions. [2023-11-26 12:04:00,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 454 flow [2023-11-26 12:04:00,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 431 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-26 12:04:00,441 INFO L231 Difference]: Finished difference. Result has 83 places, 59 transitions, 208 flow [2023-11-26 12:04:00,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=208, PETRI_PLACES=83, PETRI_TRANSITIONS=59} [2023-11-26 12:04:00,442 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -14 predicate places. [2023-11-26 12:04:00,442 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 59 transitions, 208 flow [2023-11-26 12:04:00,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 66.38888888888889) internal successors, (1195), 18 states have internal predecessors, (1195), 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 12:04:00,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:00,443 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:00,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:00,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:00,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-26 12:04:00,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash -178986461, now seen corresponding path program 1 times [2023-11-26 12:04:00,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008939892] [2023-11-26 12:04:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:00,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:04:00,679 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:04:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:04:00,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:04:00,715 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:04:00,716 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-26 12:04:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-26 12:04:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-26 12:04:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-26 12:04:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-26 12:04:00,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-26 12:04:00,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-26 12:04:00,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-26 12:04:00,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-26 12:04:00,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 12:04:00,718 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 12:04:00,719 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:04:00,719 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-26 12:04:00,759 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-26 12:04:00,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 104 transitions, 263 flow [2023-11-26 12:04:00,954 INFO L124 PetriNetUnfolderBase]: 104/977 cut-off events. [2023-11-26 12:04:00,954 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-26 12:04:00,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 977 events. 104/977 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4694 event pairs, 23 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 590. Up to 80 conditions per place. [2023-11-26 12:04:00,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 104 transitions, 263 flow [2023-11-26 12:04:00,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 104 transitions, 263 flow [2023-11-26 12:04:00,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:04:00,965 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;@1e4f3e04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:04:00,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-26 12:04:00,968 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:04:00,968 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-26 12:04:00,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:04:00,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:00,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:00,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-26 12:04:00,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:00,969 INFO L85 PathProgramCache]: Analyzing trace with hash -544536339, now seen corresponding path program 1 times [2023-11-26 12:04:00,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:00,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581160830] [2023-11-26 12:04:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:00,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:00,986 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 12:04:00,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:00,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581160830] [2023-11-26 12:04:00,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581160830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:00,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:00,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:04:00,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634145848] [2023-11-26 12:04:00,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:00,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:04:00,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:00,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:04:00,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:04:00,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 104 [2023-11-26 12:04:00,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 263 flow. Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 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 12:04:00,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:00,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 104 [2023-11-26 12:04:00,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:01,648 INFO L124 PetriNetUnfolderBase]: 622/3877 cut-off events. [2023-11-26 12:04:01,648 INFO L125 PetriNetUnfolderBase]: For 1742/3079 co-relation queries the response was YES. [2023-11-26 12:04:01,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5340 conditions, 3877 events. 622/3877 cut-off events. For 1742/3079 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 35288 event pairs, 527 based on Foata normal form. 219/3616 useless extension candidates. Maximal degree in co-relation 3130. Up to 892 conditions per place. [2023-11-26 12:04:01,680 INFO L140 encePairwiseOnDemand]: 94/104 looper letters, 16 selfloop transitions, 0 changer transitions 0/91 dead transitions. [2023-11-26 12:04:01,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 269 flow [2023-11-26 12:04:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:04:01,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:04:01,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2023-11-26 12:04:01,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8653846153846154 [2023-11-26 12:04:01,682 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 180 transitions. [2023-11-26 12:04:01,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 180 transitions. [2023-11-26 12:04:01,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:01,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 180 transitions. [2023-11-26 12:04:01,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 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 12:04:01,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:01,685 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:01,685 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 263 flow. Second operand 2 states and 180 transitions. [2023-11-26 12:04:01,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 269 flow [2023-11-26 12:04:01,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 269 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:04:01,689 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 237 flow [2023-11-26 12:04:01,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=237, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-11-26 12:04:01,691 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -8 predicate places. [2023-11-26 12:04:01,691 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 237 flow [2023-11-26 12:04:01,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 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 12:04:01,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:01,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:01,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 12:04:01,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-26 12:04:01,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2072977399, now seen corresponding path program 1 times [2023-11-26 12:04:01,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:01,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605546656] [2023-11-26 12:04:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:01,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:01,720 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 12:04:01,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:01,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605546656] [2023-11-26 12:04:01,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605546656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:01,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:01,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:01,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812266216] [2023-11-26 12:04:01,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:01,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:01,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:01,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:01,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 104 [2023-11-26 12:04:01,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 12:04:01,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:01,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 104 [2023-11-26 12:04:01,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:02,514 INFO L124 PetriNetUnfolderBase]: 1484/5152 cut-off events. [2023-11-26 12:04:02,514 INFO L125 PetriNetUnfolderBase]: For 1875/2686 co-relation queries the response was YES. [2023-11-26 12:04:02,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7951 conditions, 5152 events. 1484/5152 cut-off events. For 1875/2686 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 43984 event pairs, 1050 based on Foata normal form. 1/4538 useless extension candidates. Maximal degree in co-relation 7943. Up to 2179 conditions per place. [2023-11-26 12:04:02,551 INFO L140 encePairwiseOnDemand]: 101/104 looper letters, 21 selfloop transitions, 2 changer transitions 3/93 dead transitions. [2023-11-26 12:04:02,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 289 flow [2023-11-26 12:04:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-26 12:04:02,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2023-11-26 12:04:02,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-26 12:04:02,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-26 12:04:02,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:02,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-26 12:04:02,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 12:04:02,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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 12:04:02,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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 12:04:02,556 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 237 flow. Second operand 3 states and 238 transitions. [2023-11-26 12:04:02,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 289 flow [2023-11-26 12:04:02,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:04:02,561 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 243 flow [2023-11-26 12:04:02,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-11-26 12:04:02,562 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -5 predicate places. [2023-11-26 12:04:02,562 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 243 flow [2023-11-26 12:04:02,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 12:04:02,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:02,563 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] [2023-11-26 12:04:02,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 12:04:02,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-26 12:04:02,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:02,564 INFO L85 PathProgramCache]: Analyzing trace with hash 344227040, now seen corresponding path program 1 times [2023-11-26 12:04:02,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:02,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760603970] [2023-11-26 12:04:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:02,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:02,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:02,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760603970] [2023-11-26 12:04:02,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760603970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:02,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146443260] [2023-11-26 12:04:02,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:02,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:02,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:02,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:02,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:04:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:02,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:04:02,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:04:02,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:02,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146443260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:02,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:04:02,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 12:04:02,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147129077] [2023-11-26 12:04:02,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:02,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:02,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:02,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 104 [2023-11-26 12:04:02,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 12:04:02,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:02,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 104 [2023-11-26 12:04:02,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:04,383 INFO L124 PetriNetUnfolderBase]: 1758/9912 cut-off events. [2023-11-26 12:04:04,383 INFO L125 PetriNetUnfolderBase]: For 3023/3893 co-relation queries the response was YES. [2023-11-26 12:04:04,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13461 conditions, 9912 events. 1758/9912 cut-off events. For 3023/3893 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 109655 event pairs, 725 based on Foata normal form. 15/8844 useless extension candidates. Maximal degree in co-relation 13451. Up to 1923 conditions per place. [2023-11-26 12:04:04,470 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 23 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2023-11-26 12:04:04,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 100 transitions, 340 flow [2023-11-26 12:04:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-11-26 12:04:04,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8108974358974359 [2023-11-26 12:04:04,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-11-26 12:04:04,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-11-26 12:04:04,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:04,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-11-26 12:04:04,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 12:04:04,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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 12:04:04,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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 12:04:04,476 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 243 flow. Second operand 3 states and 253 transitions. [2023-11-26 12:04:04,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 100 transitions, 340 flow [2023-11-26 12:04:04,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:04:04,485 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 295 flow [2023-11-26 12:04:04,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2023-11-26 12:04:04,486 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -5 predicate places. [2023-11-26 12:04:04,487 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 295 flow [2023-11-26 12:04:04,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 12:04:04,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:04,487 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] [2023-11-26 12:04:04,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:04,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-26 12:04:04,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-26 12:04:04,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:04,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1511902023, now seen corresponding path program 1 times [2023-11-26 12:04:04,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:04,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856329272] [2023-11-26 12:04:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:04,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:04,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856329272] [2023-11-26 12:04:04,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856329272] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:04,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946046643] [2023-11-26 12:04:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:04,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:04,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:04,779 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:04,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:04:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:04,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:04:04,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:04,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:04:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946046643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:04:04,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:04:04,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 12:04:04,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970111147] [2023-11-26 12:04:04,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:04:04,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:04:04,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:04:04,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:04:04,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2023-11-26 12:04:04,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 295 flow. Second operand has 10 states, 10 states have (on average 70.3) internal successors, (703), 10 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 12:04:04,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:04,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2023-11-26 12:04:04,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:06,654 INFO L124 PetriNetUnfolderBase]: 2499/10613 cut-off events. [2023-11-26 12:04:06,654 INFO L125 PetriNetUnfolderBase]: For 5720/6056 co-relation queries the response was YES. [2023-11-26 12:04:06,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18160 conditions, 10613 events. 2499/10613 cut-off events. For 5720/6056 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 111138 event pairs, 517 based on Foata normal form. 6/9714 useless extension candidates. Maximal degree in co-relation 18149. Up to 2811 conditions per place. [2023-11-26 12:04:06,742 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 43 selfloop transitions, 9 changer transitions 0/117 dead transitions. [2023-11-26 12:04:06,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 117 transitions, 473 flow [2023-11-26 12:04:06,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:04:06,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:04:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 661 transitions. [2023-11-26 12:04:06,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7061965811965812 [2023-11-26 12:04:06,746 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 661 transitions. [2023-11-26 12:04:06,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 661 transitions. [2023-11-26 12:04:06,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:06,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 661 transitions. [2023-11-26 12:04:06,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.44444444444444) internal successors, (661), 9 states have internal predecessors, (661), 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 12:04:06,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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 12:04:06,752 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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 12:04:06,753 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 295 flow. Second operand 9 states and 661 transitions. [2023-11-26 12:04:06,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 117 transitions, 473 flow [2023-11-26 12:04:06,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:04:06,762 INFO L231 Difference]: Finished difference. Result has 110 places, 101 transitions, 331 flow [2023-11-26 12:04:06,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=331, PETRI_PLACES=110, PETRI_TRANSITIONS=101} [2023-11-26 12:04:06,763 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 4 predicate places. [2023-11-26 12:04:06,763 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 101 transitions, 331 flow [2023-11-26 12:04:06,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.3) internal successors, (703), 10 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 12:04:06,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:06,764 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-26 12:04:06,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:06,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 12:04:06,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-26 12:04:06,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2117816918, now seen corresponding path program 1 times [2023-11-26 12:04:06,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:06,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468556486] [2023-11-26 12:04:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:06,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:07,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468556486] [2023-11-26 12:04:07,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468556486] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:07,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647571464] [2023-11-26 12:04:07,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:07,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:07,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:07,109 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:07,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 12:04:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:04:07,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:07,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:04:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:07,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647571464] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:04:07,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:04:07,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-26 12:04:07,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83872678] [2023-11-26 12:04:07,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:04:07,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 12:04:07,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:07,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 12:04:07,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:04:07,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2023-11-26 12:04:07,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 101 transitions, 331 flow. Second operand has 18 states, 18 states have (on average 70.38888888888889) internal successors, (1267), 18 states have internal predecessors, (1267), 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 12:04:07,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:07,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2023-11-26 12:04:07,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:07,820 INFO L124 PetriNetUnfolderBase]: 614/1347 cut-off events. [2023-11-26 12:04:07,821 INFO L125 PetriNetUnfolderBase]: For 1554/1554 co-relation queries the response was YES. [2023-11-26 12:04:07,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3523 conditions, 1347 events. 614/1347 cut-off events. For 1554/1554 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7503 event pairs, 0 based on Foata normal form. 56/1403 useless extension candidates. Maximal degree in co-relation 3510. Up to 646 conditions per place. [2023-11-26 12:04:07,835 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 63 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2023-11-26 12:04:07,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 117 transitions, 604 flow [2023-11-26 12:04:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 12:04:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-26 12:04:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1306 transitions. [2023-11-26 12:04:07,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6976495726495726 [2023-11-26 12:04:07,921 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1306 transitions. [2023-11-26 12:04:07,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1306 transitions. [2023-11-26 12:04:07,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:07,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1306 transitions. [2023-11-26 12:04:07,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.55555555555556) internal successors, (1306), 18 states have internal predecessors, (1306), 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 12:04:07,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 104.0) internal successors, (1976), 19 states have internal predecessors, (1976), 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 12:04:07,936 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 104.0) internal successors, (1976), 19 states have internal predecessors, (1976), 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 12:04:07,936 INFO L175 Difference]: Start difference. First operand has 110 places, 101 transitions, 331 flow. Second operand 18 states and 1306 transitions. [2023-11-26 12:04:07,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 117 transitions, 604 flow [2023-11-26 12:04:07,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 117 transitions, 571 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-26 12:04:07,942 INFO L231 Difference]: Finished difference. Result has 94 places, 68 transitions, 247 flow [2023-11-26 12:04:07,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=247, PETRI_PLACES=94, PETRI_TRANSITIONS=68} [2023-11-26 12:04:07,943 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -12 predicate places. [2023-11-26 12:04:07,943 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 68 transitions, 247 flow [2023-11-26 12:04:07,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.38888888888889) internal successors, (1267), 18 states have internal predecessors, (1267), 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 12:04:07,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:07,944 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:07,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:08,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 12:04:08,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-26 12:04:08,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash -587569668, now seen corresponding path program 1 times [2023-11-26 12:04:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:08,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055025556] [2023-11-26 12:04:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:08,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:04:08,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:04:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:04:08,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:04:08,229 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:04:08,229 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-26 12:04:08,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-26 12:04:08,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-26 12:04:08,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-26 12:04:08,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-26 12:04:08,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-26 12:04:08,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-26 12:04:08,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-26 12:04:08,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-26 12:04:08,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-26 12:04:08,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-26 12:04:08,232 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 12:04:08,233 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:04:08,233 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-26 12:04:08,269 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-26 12:04:08,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 296 flow [2023-11-26 12:04:08,565 INFO L124 PetriNetUnfolderBase]: 220/1825 cut-off events. [2023-11-26 12:04:08,565 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-11-26 12:04:08,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 1825 events. 220/1825 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11228 event pairs, 72 based on Foata normal form. 0/1591 useless extension candidates. Maximal degree in co-relation 1076. Up to 192 conditions per place. [2023-11-26 12:04:08,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 112 transitions, 296 flow [2023-11-26 12:04:08,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 296 flow [2023-11-26 12:04:08,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:04:08,579 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;@1e4f3e04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:04:08,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-26 12:04:08,581 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:04:08,582 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-26 12:04:08,582 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:04:08,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:08,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:08,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-26 12:04:08,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:08,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1501959443, now seen corresponding path program 1 times [2023-11-26 12:04:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:08,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313259861] [2023-11-26 12:04:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:08,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:08,597 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 12:04:08,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:08,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313259861] [2023-11-26 12:04:08,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313259861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:08,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:08,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:04:08,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775825508] [2023-11-26 12:04:08,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:08,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:04:08,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:08,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:04:08,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:04:08,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2023-11-26 12:04:08,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 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 12:04:08,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:08,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2023-11-26 12:04:08,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:10,417 INFO L124 PetriNetUnfolderBase]: 2323/11767 cut-off events. [2023-11-26 12:04:10,417 INFO L125 PetriNetUnfolderBase]: For 5602/11331 co-relation queries the response was YES. [2023-11-26 12:04:10,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16726 conditions, 11767 events. 2323/11767 cut-off events. For 5602/11331 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 132140 event pairs, 2016 based on Foata normal form. 652/10938 useless extension candidates. Maximal degree in co-relation 10152. Up to 3110 conditions per place. [2023-11-26 12:04:10,499 INFO L140 encePairwiseOnDemand]: 101/112 looper letters, 19 selfloop transitions, 0 changer transitions 0/98 dead transitions. [2023-11-26 12:04:10,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 98 transitions, 306 flow [2023-11-26 12:04:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:04:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:04:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 192 transitions. [2023-11-26 12:04:10,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2023-11-26 12:04:10,501 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 192 transitions. [2023-11-26 12:04:10,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 192 transitions. [2023-11-26 12:04:10,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:10,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 192 transitions. [2023-11-26 12:04:10,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 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 12:04:10,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 12:04:10,504 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 12:04:10,504 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 296 flow. Second operand 2 states and 192 transitions. [2023-11-26 12:04:10,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 98 transitions, 306 flow [2023-11-26 12:04:10,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 98 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:04:10,513 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 268 flow [2023-11-26 12:04:10,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=268, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2023-11-26 12:04:10,514 INFO L281 CegarLoopForPetriNet]: 115 programPoint places, -9 predicate places. [2023-11-26 12:04:10,515 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 268 flow [2023-11-26 12:04:10,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 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 12:04:10,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:10,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:10,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-26 12:04:10,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-26 12:04:10,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:10,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2030280089, now seen corresponding path program 1 times [2023-11-26 12:04:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:10,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853323988] [2023-11-26 12:04:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:10,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:10,537 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 12:04:10,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:10,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853323988] [2023-11-26 12:04:10,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853323988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:10,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:10,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:10,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701760673] [2023-11-26 12:04:10,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:10,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:10,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:10,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:10,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:10,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 112 [2023-11-26 12:04:10,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 12:04:10,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:10,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 112 [2023-11-26 12:04:10,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:12,926 INFO L124 PetriNetUnfolderBase]: 4924/14646 cut-off events. [2023-11-26 12:04:12,926 INFO L125 PetriNetUnfolderBase]: For 6021/9025 co-relation queries the response was YES. [2023-11-26 12:04:12,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23436 conditions, 14646 events. 4924/14646 cut-off events. For 6021/9025 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 145546 event pairs, 3732 based on Foata normal form. 1/12791 useless extension candidates. Maximal degree in co-relation 23427. Up to 6813 conditions per place. [2023-11-26 12:04:13,021 INFO L140 encePairwiseOnDemand]: 109/112 looper letters, 24 selfloop transitions, 2 changer transitions 3/100 dead transitions. [2023-11-26 12:04:13,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 326 flow [2023-11-26 12:04:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-11-26 12:04:13,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7529761904761905 [2023-11-26 12:04:13,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-11-26 12:04:13,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-11-26 12:04:13,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:13,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-11-26 12:04:13,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 12:04:13,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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 12:04:13,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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 12:04:13,027 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 268 flow. Second operand 3 states and 253 transitions. [2023-11-26 12:04:13,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 326 flow [2023-11-26 12:04:13,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 100 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:04:13,038 INFO L231 Difference]: Finished difference. Result has 109 places, 96 transitions, 274 flow [2023-11-26 12:04:13,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2023-11-26 12:04:13,039 INFO L281 CegarLoopForPetriNet]: 115 programPoint places, -6 predicate places. [2023-11-26 12:04:13,039 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 96 transitions, 274 flow [2023-11-26 12:04:13,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 12:04:13,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:13,040 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] [2023-11-26 12:04:13,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-26 12:04:13,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-26 12:04:13,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:13,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1784373258, now seen corresponding path program 1 times [2023-11-26 12:04:13,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:13,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468491062] [2023-11-26 12:04:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:13,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:13,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:13,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468491062] [2023-11-26 12:04:13,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468491062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:13,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605737704] [2023-11-26 12:04:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:13,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:13,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:13,104 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:13,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 12:04:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:04:13,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:04:13,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:13,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605737704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:13,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:04:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 12:04:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022921411] [2023-11-26 12:04:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:13,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:13,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 112 [2023-11-26 12:04:13,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 96 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 12:04:13,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:13,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 112 [2023-11-26 12:04:13,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:17,208 INFO L124 PetriNetUnfolderBase]: 5989/29631 cut-off events. [2023-11-26 12:04:17,208 INFO L125 PetriNetUnfolderBase]: For 10591/13438 co-relation queries the response was YES. [2023-11-26 12:04:17,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41081 conditions, 29631 events. 5989/29631 cut-off events. For 10591/13438 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 384905 event pairs, 2688 based on Foata normal form. 21/26522 useless extension candidates. Maximal degree in co-relation 41070. Up to 6167 conditions per place. [2023-11-26 12:04:17,413 INFO L140 encePairwiseOnDemand]: 103/112 looper letters, 27 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2023-11-26 12:04:17,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 109 transitions, 388 flow [2023-11-26 12:04:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-11-26 12:04:17,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8035714285714286 [2023-11-26 12:04:17,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-11-26 12:04:17,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-11-26 12:04:17,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:17,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-11-26 12:04:17,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 12:04:17,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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 12:04:17,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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 12:04:17,420 INFO L175 Difference]: Start difference. First operand has 109 places, 96 transitions, 274 flow. Second operand 3 states and 270 transitions. [2023-11-26 12:04:17,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 109 transitions, 388 flow [2023-11-26 12:04:17,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:04:17,433 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 334 flow [2023-11-26 12:04:17,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2023-11-26 12:04:17,434 INFO L281 CegarLoopForPetriNet]: 115 programPoint places, -6 predicate places. [2023-11-26 12:04:17,435 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 334 flow [2023-11-26 12:04:17,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 12:04:17,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:17,435 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] [2023-11-26 12:04:17,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-26 12:04:17,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-26 12:04:17,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:17,644 INFO L85 PathProgramCache]: Analyzing trace with hash -543206623, now seen corresponding path program 1 times [2023-11-26 12:04:17,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:17,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301083562] [2023-11-26 12:04:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:17,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:17,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:17,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301083562] [2023-11-26 12:04:17,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301083562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:17,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430052542] [2023-11-26 12:04:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:17,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:17,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:17,707 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:17,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 12:04:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:17,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:04:17,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:17,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:04:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:17,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430052542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:04:17,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:04:17,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 12:04:17,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598475767] [2023-11-26 12:04:17,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:04:17,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:04:17,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:17,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:04:17,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:04:17,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 112 [2023-11-26 12:04:17,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 334 flow. Second operand has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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 12:04:17,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:17,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 112 [2023-11-26 12:04:17,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:21,951 INFO L124 PetriNetUnfolderBase]: 7882/30577 cut-off events. [2023-11-26 12:04:21,951 INFO L125 PetriNetUnfolderBase]: For 18147/19205 co-relation queries the response was YES. [2023-11-26 12:04:22,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53307 conditions, 30577 events. 7882/30577 cut-off events. For 18147/19205 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 368837 event pairs, 1946 based on Foata normal form. 6/27789 useless extension candidates. Maximal degree in co-relation 53295. Up to 8845 conditions per place. [2023-11-26 12:04:22,151 INFO L140 encePairwiseOnDemand]: 106/112 looper letters, 48 selfloop transitions, 9 changer transitions 0/126 dead transitions. [2023-11-26 12:04:22,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 126 transitions, 526 flow [2023-11-26 12:04:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:04:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:04:22,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 701 transitions. [2023-11-26 12:04:22,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6954365079365079 [2023-11-26 12:04:22,154 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 701 transitions. [2023-11-26 12:04:22,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 701 transitions. [2023-11-26 12:04:22,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:22,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 701 transitions. [2023-11-26 12:04:22,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.88888888888889) internal successors, (701), 9 states have internal predecessors, (701), 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 12:04:22,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 12:04:22,159 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 12:04:22,159 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 334 flow. Second operand 9 states and 701 transitions. [2023-11-26 12:04:22,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 126 transitions, 526 flow [2023-11-26 12:04:22,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 126 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:04:22,191 INFO L231 Difference]: Finished difference. Result has 118 places, 109 transitions, 368 flow [2023-11-26 12:04:22,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=368, PETRI_PLACES=118, PETRI_TRANSITIONS=109} [2023-11-26 12:04:22,192 INFO L281 CegarLoopForPetriNet]: 115 programPoint places, 3 predicate places. [2023-11-26 12:04:22,192 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 109 transitions, 368 flow [2023-11-26 12:04:22,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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 12:04:22,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:22,193 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-26 12:04:22,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:22,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:22,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-26 12:04:22,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:22,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1053087646, now seen corresponding path program 1 times [2023-11-26 12:04:22,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983888969] [2023-11-26 12:04:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:22,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:22,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:22,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983888969] [2023-11-26 12:04:22,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983888969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:22,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857504343] [2023-11-26 12:04:22,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:22,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:22,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:22,512 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:22,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 12:04:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:22,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:04:22,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:22,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:04:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:22,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857504343] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:04:22,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:04:22,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-26 12:04:22,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83488550] [2023-11-26 12:04:22,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:04:22,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 12:04:22,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:22,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 12:04:22,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:04:22,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 112 [2023-11-26 12:04:22,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 109 transitions, 368 flow. Second operand has 18 states, 18 states have (on average 74.38888888888889) internal successors, (1339), 18 states have internal predecessors, (1339), 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 12:04:22,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:22,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 112 [2023-11-26 12:04:22,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:23,621 INFO L124 PetriNetUnfolderBase]: 1542/3011 cut-off events. [2023-11-26 12:04:23,621 INFO L125 PetriNetUnfolderBase]: For 4066/4066 co-relation queries the response was YES. [2023-11-26 12:04:23,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8068 conditions, 3011 events. 1542/3011 cut-off events. For 4066/4066 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 18433 event pairs, 0 based on Foata normal form. 120/3131 useless extension candidates. Maximal degree in co-relation 8054. Up to 1606 conditions per place. [2023-11-26 12:04:23,641 INFO L140 encePairwiseOnDemand]: 107/112 looper letters, 84 selfloop transitions, 19 changer transitions 0/145 dead transitions. [2023-11-26 12:04:23,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 145 transitions, 774 flow [2023-11-26 12:04:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 12:04:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 12:04:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1619 transitions. [2023-11-26 12:04:23,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6883503401360545 [2023-11-26 12:04:23,645 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1619 transitions. [2023-11-26 12:04:23,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1619 transitions. [2023-11-26 12:04:23,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:23,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1619 transitions. [2023-11-26 12:04:23,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 77.0952380952381) internal successors, (1619), 21 states have internal predecessors, (1619), 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 12:04:23,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 112.0) internal successors, (2464), 22 states have internal predecessors, (2464), 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 12:04:23,654 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 112.0) internal successors, (2464), 22 states have internal predecessors, (2464), 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 12:04:23,654 INFO L175 Difference]: Start difference. First operand has 118 places, 109 transitions, 368 flow. Second operand 21 states and 1619 transitions. [2023-11-26 12:04:23,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 145 transitions, 774 flow [2023-11-26 12:04:23,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 145 transitions, 729 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-11-26 12:04:23,664 INFO L231 Difference]: Finished difference. Result has 105 places, 77 transitions, 286 flow [2023-11-26 12:04:23,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=286, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2023-11-26 12:04:23,665 INFO L281 CegarLoopForPetriNet]: 115 programPoint places, -10 predicate places. [2023-11-26 12:04:23,665 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 286 flow [2023-11-26 12:04:23,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 74.38888888888889) internal successors, (1339), 18 states have internal predecessors, (1339), 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 12:04:23,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:23,666 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 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 12:04:23,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:23,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:23,872 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-26 12:04:23,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash -717615518, now seen corresponding path program 1 times [2023-11-26 12:04:23,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:23,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206089544] [2023-11-26 12:04:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:23,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:04:23,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:04:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:04:23,928 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:04:23,928 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:04:23,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-26 12:04:23,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-11-26 12:04:23,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-11-26 12:04:23,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-11-26 12:04:23,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-11-26 12:04:23,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-11-26 12:04:23,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-11-26 12:04:23,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-11-26 12:04:23,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-11-26 12:04:23,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-11-26 12:04:23,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-11-26 12:04:23,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-26 12:04:23,931 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 12:04:23,934 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:04:23,934 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-11-26 12:04:23,971 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-11-26 12:04:23,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 120 transitions, 331 flow [2023-11-26 12:04:24,390 INFO L124 PetriNetUnfolderBase]: 480/3521 cut-off events. [2023-11-26 12:04:24,390 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-11-26 12:04:24,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 3521 events. 480/3521 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 26665 event pairs, 201 based on Foata normal form. 0/3089 useless extension candidates. Maximal degree in co-relation 2043. Up to 448 conditions per place. [2023-11-26 12:04:24,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 120 transitions, 331 flow [2023-11-26 12:04:24,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 120 transitions, 331 flow [2023-11-26 12:04:24,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:04:24,412 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;@1e4f3e04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:04:24,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-26 12:04:24,414 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:04:24,414 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-26 12:04:24,414 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:04:24,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:24,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:24,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:04:24,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash 233280493, now seen corresponding path program 1 times [2023-11-26 12:04:24,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:24,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708679298] [2023-11-26 12:04:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:24,427 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 12:04:24,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708679298] [2023-11-26 12:04:24,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708679298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:24,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:24,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:04:24,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388256259] [2023-11-26 12:04:24,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:24,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:04:24,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:04:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:04:24,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 120 [2023-11-26 12:04:24,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 120 transitions, 331 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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 12:04:24,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:24,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 120 [2023-11-26 12:04:24,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:29,478 INFO L124 PetriNetUnfolderBase]: 8348/36227 cut-off events. [2023-11-26 12:04:29,478 INFO L125 PetriNetUnfolderBase]: For 18908/41224 co-relation queries the response was YES. [2023-11-26 12:04:29,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52890 conditions, 36227 events. 8348/36227 cut-off events. For 18908/41224 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 478821 event pairs, 7375 based on Foata normal form. 1940/33578 useless extension candidates. Maximal degree in co-relation 32834. Up to 10656 conditions per place. [2023-11-26 12:04:29,731 INFO L140 encePairwiseOnDemand]: 108/120 looper letters, 22 selfloop transitions, 0 changer transitions 0/105 dead transitions. [2023-11-26 12:04:29,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 105 transitions, 345 flow [2023-11-26 12:04:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:04:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:04:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 204 transitions. [2023-11-26 12:04:29,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.85 [2023-11-26 12:04:29,732 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 204 transitions. [2023-11-26 12:04:29,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 204 transitions. [2023-11-26 12:04:29,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:29,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 204 transitions. [2023-11-26 12:04:29,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 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 12:04:29,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 12:04:29,734 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 12:04:29,734 INFO L175 Difference]: Start difference. First operand has 124 places, 120 transitions, 331 flow. Second operand 2 states and 204 transitions. [2023-11-26 12:04:29,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 105 transitions, 345 flow [2023-11-26 12:04:29,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 105 transitions, 345 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:04:29,767 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 301 flow [2023-11-26 12:04:29,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=301, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2023-11-26 12:04:29,768 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, -10 predicate places. [2023-11-26 12:04:29,768 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 301 flow [2023-11-26 12:04:29,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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 12:04:29,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:29,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:29,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-26 12:04:29,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:04:29,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash 629390303, now seen corresponding path program 1 times [2023-11-26 12:04:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451702870] [2023-11-26 12:04:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:29,789 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 12:04:29,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:29,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451702870] [2023-11-26 12:04:29,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451702870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:29,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:29,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:29,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062633838] [2023-11-26 12:04:29,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:29,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:29,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:29,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:29,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:29,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 120 [2023-11-26 12:04:29,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 12:04:29,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:29,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 120 [2023-11-26 12:04:29,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:36,156 INFO L124 PetriNetUnfolderBase]: 16192/42872 cut-off events. [2023-11-26 12:04:36,157 INFO L125 PetriNetUnfolderBase]: For 20306/30197 co-relation queries the response was YES. [2023-11-26 12:04:36,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70641 conditions, 42872 events. 16192/42872 cut-off events. For 20306/30197 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 482340 event pairs, 12884 based on Foata normal form. 1/37182 useless extension candidates. Maximal degree in co-relation 70631. Up to 21443 conditions per place. [2023-11-26 12:04:36,423 INFO L140 encePairwiseOnDemand]: 117/120 looper letters, 27 selfloop transitions, 2 changer transitions 3/107 dead transitions. [2023-11-26 12:04:36,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 107 transitions, 365 flow [2023-11-26 12:04:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-11-26 12:04:36,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2023-11-26 12:04:36,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-11-26 12:04:36,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-11-26 12:04:36,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:36,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-11-26 12:04:36,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:36,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:04:36,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:04:36,426 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 301 flow. Second operand 3 states and 268 transitions. [2023-11-26 12:04:36,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 107 transitions, 365 flow [2023-11-26 12:04:36,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 107 transitions, 365 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:04:36,449 INFO L231 Difference]: Finished difference. Result has 117 places, 103 transitions, 307 flow [2023-11-26 12:04:36,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=117, PETRI_TRANSITIONS=103} [2023-11-26 12:04:36,450 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, -7 predicate places. [2023-11-26 12:04:36,450 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 103 transitions, 307 flow [2023-11-26 12:04:36,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 12:04:36,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:36,451 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] [2023-11-26 12:04:36,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-26 12:04:36,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:04:36,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash 650556732, now seen corresponding path program 1 times [2023-11-26 12:04:36,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:36,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717359172] [2023-11-26 12:04:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:36,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:36,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:36,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717359172] [2023-11-26 12:04:36,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717359172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:36,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588016479] [2023-11-26 12:04:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:36,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:36,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:36,498 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:36,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64878cd-5758-4b8d-817e-37403dffd39c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 12:04:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:36,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:04:36,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:04:36,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:36,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588016479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:36,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:04:36,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 12:04:36,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379871879] [2023-11-26 12:04:36,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:36,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:36,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:36,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:36,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 120 [2023-11-26 12:04:36,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 103 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 12:04:36,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:36,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 120 [2023-11-26 12:04:36,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand