./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.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_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:23:58,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:23:58,916 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 01:23:58,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:23:58,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:23:58,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:23:58,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:23:58,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:23:58,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:23:58,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:23:58,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:23:58,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:23:58,948 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:23:58,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:23:58,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:23:58,951 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:23:58,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:23:58,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:23:58,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:23:58,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:23:58,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:23:58,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:23:58,954 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 01:23:58,954 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:23:58,955 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:23:58,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:23:58,955 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:23:58,956 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:23:58,956 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:23:58,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:23:58,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:23:58,957 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:23:58,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:23:58,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:23:58,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:23:58,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:23:58,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:23:58,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:23:58,959 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:23:58,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:23:58,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:23:58,959 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_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 [2023-11-29 01:23:59,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:23:59,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:23:59,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:23:59,223 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:23:59,224 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:23:59,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2023-11-29 01:24:01,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:24:02,174 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:24:02,174 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2023-11-29 01:24:02,190 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/data/d5fb5c4e1/580944e667f742a7adc95bbfcbbe12de/FLAG26ea7bd2c [2023-11-29 01:24:02,205 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/data/d5fb5c4e1/580944e667f742a7adc95bbfcbbe12de [2023-11-29 01:24:02,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:24:02,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:24:02,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:24:02,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:24:02,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:24:02,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3a349b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02, skipping insertion in model container [2023-11-29 01:24:02,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,271 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:24:02,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:24:02,770 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:24:02,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:24:02,871 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:24:02,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02 WrapperNode [2023-11-29 01:24:02,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:24:02,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:24:02,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:24:02,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:24:02,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,932 INFO L138 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 118 [2023-11-29 01:24:02,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:24:02,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:24:02,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:24:02,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:24:02,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,969 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:24:02,974 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:24:02,975 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:24:02,975 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:24:02,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (1/1) ... [2023-11-29 01:24:02,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:24:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:03,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:24:03,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:24:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:24:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:24:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 01:24:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 01:24:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 01:24:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 01:24:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:24:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 01:24:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 01:24:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:24:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:24:03,048 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:24:03,184 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:24:03,186 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:24:03,421 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:24:03,442 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:24:03,442 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 01:24:03,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:24:03 BoogieIcfgContainer [2023-11-29 01:24:03,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:24:03,445 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:24:03,445 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:24:03,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:24:03,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:24:02" (1/3) ... [2023-11-29 01:24:03,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e106490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:24:03, skipping insertion in model container [2023-11-29 01:24:03,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:02" (2/3) ... [2023-11-29 01:24:03,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e106490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:24:03, skipping insertion in model container [2023-11-29 01:24:03,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:24:03" (3/3) ... [2023-11-29 01:24:03,465 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_03-funloop_simple.i [2023-11-29 01:24:03,472 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:24:03,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:24:03,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 01:24:03,480 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:24:03,555 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:24:03,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 124 transitions, 252 flow [2023-11-29 01:24:03,647 INFO L124 PetriNetUnfolderBase]: 6/123 cut-off events. [2023-11-29 01:24:03,648 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:24:03,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 123 events. 6/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 220 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-11-29 01:24:03,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 124 transitions, 252 flow [2023-11-29 01:24:03,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 123 transitions, 249 flow [2023-11-29 01:24:03,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:24:03,677 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;@333e590e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:24:03,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-29 01:24:03,691 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:24:03,691 INFO L124 PetriNetUnfolderBase]: 4/53 cut-off events. [2023-11-29 01:24:03,692 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:24:03,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:03,692 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] [2023-11-29 01:24:03,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:03,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:03,698 INFO L85 PathProgramCache]: Analyzing trace with hash 782868137, now seen corresponding path program 1 times [2023-11-29 01:24:03,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:03,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726387202] [2023-11-29 01:24:03,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:03,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726387202] [2023-11-29 01:24:03,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726387202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:03,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:24:03,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:24:03,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098631472] [2023-11-29 01:24:03,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:03,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:24:03,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:03,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:24:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:24:04,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 124 [2023-11-29 01:24:04,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 123 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:04,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:04,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 124 [2023-11-29 01:24:04,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:04,094 INFO L124 PetriNetUnfolderBase]: 14/282 cut-off events. [2023-11-29 01:24:04,094 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:24:04,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 282 events. 14/282 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 805 event pairs, 6 based on Foata normal form. 11/270 useless extension candidates. Maximal degree in co-relation 279. Up to 29 conditions per place. [2023-11-29 01:24:04,100 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 10 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-11-29 01:24:04,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 121 transitions, 269 flow [2023-11-29 01:24:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:24:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:24:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-11-29 01:24:04,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9327956989247311 [2023-11-29 01:24:04,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-11-29 01:24:04,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-11-29 01:24:04,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:04,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-11-29 01:24:04,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:04,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:04,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:04,134 INFO L175 Difference]: Start difference. First operand has 121 places, 123 transitions, 249 flow. Second operand 3 states and 347 transitions. [2023-11-29 01:24:04,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 121 transitions, 269 flow [2023-11-29 01:24:04,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 121 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:24:04,142 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 254 flow [2023-11-29 01:24:04,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-11-29 01:24:04,146 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 2 predicate places. [2023-11-29 01:24:04,147 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 254 flow [2023-11-29 01:24:04,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:04,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:04,148 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] [2023-11-29 01:24:04,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:24:04,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:04,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1234552795, now seen corresponding path program 1 times [2023-11-29 01:24:04,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:04,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527470439] [2023-11-29 01:24:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:04,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:04,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527470439] [2023-11-29 01:24:04,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527470439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955109927] [2023-11-29 01:24:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:04,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:04,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:04,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:04,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:24:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:04,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:24:04,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:24:04,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:04,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955109927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:04,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:04,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 01:24:04,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843375074] [2023-11-29 01:24:04,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:04,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:24:04,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:04,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:24:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:24:04,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 124 [2023-11-29 01:24:04,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:04,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:04,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 124 [2023-11-29 01:24:04,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:04,530 INFO L124 PetriNetUnfolderBase]: 21/351 cut-off events. [2023-11-29 01:24:04,530 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:24:04,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 351 events. 21/351 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1351 event pairs, 10 based on Foata normal form. 3/332 useless extension candidates. Maximal degree in co-relation 390. Up to 34 conditions per place. [2023-11-29 01:24:04,534 INFO L140 encePairwiseOnDemand]: 121/124 looper letters, 14 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2023-11-29 01:24:04,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 126 transitions, 296 flow [2023-11-29 01:24:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:24:04,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:24:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-11-29 01:24:04,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9327956989247311 [2023-11-29 01:24:04,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-11-29 01:24:04,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-11-29 01:24:04,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:04,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-11-29 01:24:04,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:04,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:04,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:04,543 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 254 flow. Second operand 3 states and 347 transitions. [2023-11-29 01:24:04,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 126 transitions, 296 flow [2023-11-29 01:24:04,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 126 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:24:04,548 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 264 flow [2023-11-29 01:24:04,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2023-11-29 01:24:04,549 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 4 predicate places. [2023-11-29 01:24:04,549 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 264 flow [2023-11-29 01:24:04,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:04,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:04,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:04,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:24:04,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 01:24:04,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:04,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1976016632, now seen corresponding path program 1 times [2023-11-29 01:24:04,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:04,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881968328] [2023-11-29 01:24:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:04,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:04,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:04,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881968328] [2023-11-29 01:24:04,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881968328] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:04,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123535053] [2023-11-29 01:24:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:04,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:04,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:04,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:04,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:24:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:04,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:24:04,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:04,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:05,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123535053] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:05,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:24:05,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 01:24:05,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575047123] [2023-11-29 01:24:05,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:05,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:05,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:05,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:05,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:24:05,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 124 [2023-11-29 01:24:05,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 264 flow. Second operand has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:05,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:05,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 124 [2023-11-29 01:24:05,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:05,192 INFO L124 PetriNetUnfolderBase]: 15/342 cut-off events. [2023-11-29 01:24:05,192 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:24:05,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 342 events. 15/342 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1126 event pairs, 10 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 361. Up to 34 conditions per place. [2023-11-29 01:24:05,195 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 14 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2023-11-29 01:24:05,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 130 transitions, 328 flow [2023-11-29 01:24:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:24:05,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:24:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 988 transitions. [2023-11-29 01:24:05,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8853046594982079 [2023-11-29 01:24:05,200 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 988 transitions. [2023-11-29 01:24:05,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 988 transitions. [2023-11-29 01:24:05,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:05,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 988 transitions. [2023-11-29 01:24:05,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.77777777777777) internal successors, (988), 9 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:05,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:05,209 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:05,209 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 264 flow. Second operand 9 states and 988 transitions. [2023-11-29 01:24:05,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 130 transitions, 328 flow [2023-11-29 01:24:05,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 130 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:24:05,213 INFO L231 Difference]: Finished difference. Result has 135 places, 128 transitions, 312 flow [2023-11-29 01:24:05,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=312, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2023-11-29 01:24:05,215 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 14 predicate places. [2023-11-29 01:24:05,215 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 312 flow [2023-11-29 01:24:05,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:05,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:05,216 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:05,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:24:05,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:05,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:05,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1040859208, now seen corresponding path program 2 times [2023-11-29 01:24:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:05,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414085363] [2023-11-29 01:24:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:05,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:05,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:05,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414085363] [2023-11-29 01:24:05,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414085363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:05,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498290685] [2023-11-29 01:24:05,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:24:05,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:05,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:05,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:05,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:24:05,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:24:05,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:05,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:24:05,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:05,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:24:05,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 01:24:05,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:05,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 01:24:05,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:05,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 01:24:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:24:05,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:05,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498290685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:05,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:05,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-11-29 01:24:05,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62938245] [2023-11-29 01:24:05,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:05,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:24:05,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:05,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:24:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:24:06,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:24:06,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:06,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:06,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:24:06,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:06,483 INFO L124 PetriNetUnfolderBase]: 355/1785 cut-off events. [2023-11-29 01:24:06,483 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 01:24:06,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 1785 events. 355/1785 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 12938 event pairs, 172 based on Foata normal form. 0/1657 useless extension candidates. Maximal degree in co-relation 2508. Up to 583 conditions per place. [2023-11-29 01:24:06,497 INFO L140 encePairwiseOnDemand]: 109/124 looper letters, 34 selfloop transitions, 38 changer transitions 0/173 dead transitions. [2023-11-29 01:24:06,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 173 transitions, 546 flow [2023-11-29 01:24:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:24:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:24:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 637 transitions. [2023-11-29 01:24:06,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8561827956989247 [2023-11-29 01:24:06,500 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 637 transitions. [2023-11-29 01:24:06,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 637 transitions. [2023-11-29 01:24:06,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:06,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 637 transitions. [2023-11-29 01:24:06,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.16666666666667) internal successors, (637), 6 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:06,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:06,540 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:06,540 INFO L175 Difference]: Start difference. First operand has 135 places, 128 transitions, 312 flow. Second operand 6 states and 637 transitions. [2023-11-29 01:24:06,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 173 transitions, 546 flow [2023-11-29 01:24:06,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 173 transitions, 540 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 01:24:06,547 INFO L231 Difference]: Finished difference. Result has 144 places, 165 transitions, 560 flow [2023-11-29 01:24:06,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=560, PETRI_PLACES=144, PETRI_TRANSITIONS=165} [2023-11-29 01:24:06,548 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 23 predicate places. [2023-11-29 01:24:06,548 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 165 transitions, 560 flow [2023-11-29 01:24:06,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:06,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:06,549 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:06,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:24:06,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:06,750 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:06,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:06,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1512755843, now seen corresponding path program 1 times [2023-11-29 01:24:06,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:06,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581718695] [2023-11-29 01:24:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:06,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:06,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:06,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581718695] [2023-11-29 01:24:06,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581718695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:06,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494725790] [2023-11-29 01:24:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:06,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:06,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:06,905 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:06,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:24:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:06,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:24:07,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:07,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:07,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494725790] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:07,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:24:07,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 01:24:07,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073675538] [2023-11-29 01:24:07,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:07,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:24:07,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:07,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:24:07,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:24:07,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 124 [2023-11-29 01:24:07,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 165 transitions, 560 flow. Second operand has 18 states, 18 states have (on average 109.0) internal successors, (1962), 18 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:07,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:07,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 124 [2023-11-29 01:24:07,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:07,577 INFO L124 PetriNetUnfolderBase]: 133/1023 cut-off events. [2023-11-29 01:24:07,577 INFO L125 PetriNetUnfolderBase]: For 104/117 co-relation queries the response was YES. [2023-11-29 01:24:07,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 1023 events. 133/1023 cut-off events. For 104/117 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6121 event pairs, 28 based on Foata normal form. 4/971 useless extension candidates. Maximal degree in co-relation 1497. Up to 177 conditions per place. [2023-11-29 01:24:07,585 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 18 selfloop transitions, 21 changer transitions 0/183 dead transitions. [2023-11-29 01:24:07,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 183 transitions, 726 flow [2023-11-29 01:24:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:24:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 01:24:07,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2290 transitions. [2023-11-29 01:24:07,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.879416282642089 [2023-11-29 01:24:07,595 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2290 transitions. [2023-11-29 01:24:07,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2290 transitions. [2023-11-29 01:24:07,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:07,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2290 transitions. [2023-11-29 01:24:07,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 109.04761904761905) internal successors, (2290), 21 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:07,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:07,615 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:07,615 INFO L175 Difference]: Start difference. First operand has 144 places, 165 transitions, 560 flow. Second operand 21 states and 2290 transitions. [2023-11-29 01:24:07,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 183 transitions, 726 flow [2023-11-29 01:24:07,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 183 transitions, 726 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:24:07,626 INFO L231 Difference]: Finished difference. Result has 169 places, 178 transitions, 690 flow [2023-11-29 01:24:07,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=690, PETRI_PLACES=169, PETRI_TRANSITIONS=178} [2023-11-29 01:24:07,627 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 48 predicate places. [2023-11-29 01:24:07,627 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 178 transitions, 690 flow [2023-11-29 01:24:07,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 109.0) internal successors, (1962), 18 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:07,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:07,629 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:07,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:24:07,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:07,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:07,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:07,833 INFO L85 PathProgramCache]: Analyzing trace with hash -21840899, now seen corresponding path program 2 times [2023-11-29 01:24:07,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:07,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919863] [2023-11-29 01:24:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:07,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:08,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919863] [2023-11-29 01:24:08,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050295252] [2023-11-29 01:24:08,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:24:08,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:08,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:08,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:08,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:24:08,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:24:08,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:08,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:24:08,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:08,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:24:08,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 01:24:08,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:08,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-29 01:24:08,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:08,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-29 01:24:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 01:24:08,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:08,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050295252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:08,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:08,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2023-11-29 01:24:08,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241326053] [2023-11-29 01:24:08,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:08,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:08,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:08,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:24:09,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 124 [2023-11-29 01:24:09,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 178 transitions, 690 flow. Second operand has 10 states, 10 states have (on average 86.4) internal successors, (864), 10 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:09,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:09,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 124 [2023-11-29 01:24:09,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:09,626 INFO L124 PetriNetUnfolderBase]: 492/1907 cut-off events. [2023-11-29 01:24:09,626 INFO L125 PetriNetUnfolderBase]: For 517/574 co-relation queries the response was YES. [2023-11-29 01:24:09,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 1907 events. 492/1907 cut-off events. For 517/574 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13522 event pairs, 128 based on Foata normal form. 14/1812 useless extension candidates. Maximal degree in co-relation 3518. Up to 562 conditions per place. [2023-11-29 01:24:09,644 INFO L140 encePairwiseOnDemand]: 106/124 looper letters, 125 selfloop transitions, 33 changer transitions 0/266 dead transitions. [2023-11-29 01:24:09,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 266 transitions, 1306 flow [2023-11-29 01:24:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:24:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:24:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 953 transitions. [2023-11-29 01:24:09,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7685483870967742 [2023-11-29 01:24:09,648 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 953 transitions. [2023-11-29 01:24:09,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 953 transitions. [2023-11-29 01:24:09,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:09,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 953 transitions. [2023-11-29 01:24:09,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 95.3) internal successors, (953), 10 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:09,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:09,683 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:09,683 INFO L175 Difference]: Start difference. First operand has 169 places, 178 transitions, 690 flow. Second operand 10 states and 953 transitions. [2023-11-29 01:24:09,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 266 transitions, 1306 flow [2023-11-29 01:24:09,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 266 transitions, 1282 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 01:24:09,694 INFO L231 Difference]: Finished difference. Result has 179 places, 208 transitions, 950 flow [2023-11-29 01:24:09,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=950, PETRI_PLACES=179, PETRI_TRANSITIONS=208} [2023-11-29 01:24:09,695 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 58 predicate places. [2023-11-29 01:24:09,695 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 208 transitions, 950 flow [2023-11-29 01:24:09,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.4) internal successors, (864), 10 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:09,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:09,696 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:09,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:24:09,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:09,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:09,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1261042253, now seen corresponding path program 1 times [2023-11-29 01:24:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:09,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035618577] [2023-11-29 01:24:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:09,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:10,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035618577] [2023-11-29 01:24:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035618577] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716122675] [2023-11-29 01:24:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:10,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:10,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:10,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:10,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:24:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:10,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:24:10,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:10,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716122675] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:10,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:24:10,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-29 01:24:10,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708170428] [2023-11-29 01:24:10,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:10,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:24:10,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:24:10,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:24:10,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 124 [2023-11-29 01:24:10,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 208 transitions, 950 flow. Second operand has 23 states, 23 states have (on average 109.08695652173913) internal successors, (2509), 23 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:10,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:10,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 124 [2023-11-29 01:24:10,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:11,194 INFO L124 PetriNetUnfolderBase]: 214/1502 cut-off events. [2023-11-29 01:24:11,194 INFO L125 PetriNetUnfolderBase]: For 868/888 co-relation queries the response was YES. [2023-11-29 01:24:11,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2946 conditions, 1502 events. 214/1502 cut-off events. For 868/888 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9671 event pairs, 46 based on Foata normal form. 3/1438 useless extension candidates. Maximal degree in co-relation 2724. Up to 228 conditions per place. [2023-11-29 01:24:11,209 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 21 selfloop transitions, 30 changer transitions 0/225 dead transitions. [2023-11-29 01:24:11,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 225 transitions, 1174 flow [2023-11-29 01:24:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:24:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 01:24:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3264 transitions. [2023-11-29 01:24:11,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8774193548387097 [2023-11-29 01:24:11,221 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3264 transitions. [2023-11-29 01:24:11,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3264 transitions. [2023-11-29 01:24:11,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:11,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3264 transitions. [2023-11-29 01:24:11,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 108.8) internal successors, (3264), 30 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:11,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 124.0) internal successors, (3844), 31 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:11,246 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 124.0) internal successors, (3844), 31 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:11,246 INFO L175 Difference]: Start difference. First operand has 179 places, 208 transitions, 950 flow. Second operand 30 states and 3264 transitions. [2023-11-29 01:24:11,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 225 transitions, 1174 flow [2023-11-29 01:24:11,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 225 transitions, 1168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:24:11,259 INFO L231 Difference]: Finished difference. Result has 209 places, 218 transitions, 1096 flow [2023-11-29 01:24:11,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1096, PETRI_PLACES=209, PETRI_TRANSITIONS=218} [2023-11-29 01:24:11,260 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 88 predicate places. [2023-11-29 01:24:11,260 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 218 transitions, 1096 flow [2023-11-29 01:24:11,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 109.08695652173913) internal successors, (2509), 23 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:11,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:11,262 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:11,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:24:11,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 01:24:11,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:11,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:11,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1863536703, now seen corresponding path program 2 times [2023-11-29 01:24:11,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:11,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093097526] [2023-11-29 01:24:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:11,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:11,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:11,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093097526] [2023-11-29 01:24:11,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093097526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:11,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:24:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:24:11,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306053675] [2023-11-29 01:24:11,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:11,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:24:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:11,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:24:11,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:24:12,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2023-11-29 01:24:12,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 218 transitions, 1096 flow. Second operand has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:12,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:12,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2023-11-29 01:24:12,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:13,068 INFO L124 PetriNetUnfolderBase]: 929/3266 cut-off events. [2023-11-29 01:24:13,068 INFO L125 PetriNetUnfolderBase]: For 2571/2642 co-relation queries the response was YES. [2023-11-29 01:24:13,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7946 conditions, 3266 events. 929/3266 cut-off events. For 2571/2642 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 24803 event pairs, 302 based on Foata normal form. 21/3106 useless extension candidates. Maximal degree in co-relation 7725. Up to 1582 conditions per place. [2023-11-29 01:24:13,100 INFO L140 encePairwiseOnDemand]: 101/124 looper letters, 101 selfloop transitions, 89 changer transitions 0/309 dead transitions. [2023-11-29 01:24:13,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 309 transitions, 1850 flow [2023-11-29 01:24:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:24:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:24:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 619 transitions. [2023-11-29 01:24:13,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.831989247311828 [2023-11-29 01:24:13,104 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 619 transitions. [2023-11-29 01:24:13,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 619 transitions. [2023-11-29 01:24:13,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:13,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 619 transitions. [2023-11-29 01:24:13,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.16666666666667) internal successors, (619), 6 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:13,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:13,109 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:13,109 INFO L175 Difference]: Start difference. First operand has 209 places, 218 transitions, 1096 flow. Second operand 6 states and 619 transitions. [2023-11-29 01:24:13,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 309 transitions, 1850 flow [2023-11-29 01:24:13,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 309 transitions, 1804 flow, removed 5 selfloop flow, removed 18 redundant places. [2023-11-29 01:24:13,126 INFO L231 Difference]: Finished difference. Result has 201 places, 301 transitions, 1824 flow [2023-11-29 01:24:13,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1824, PETRI_PLACES=201, PETRI_TRANSITIONS=301} [2023-11-29 01:24:13,128 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 80 predicate places. [2023-11-29 01:24:13,128 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 301 transitions, 1824 flow [2023-11-29 01:24:13,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:13,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:13,129 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:13,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:24:13,129 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:13,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:13,129 INFO L85 PathProgramCache]: Analyzing trace with hash 177341291, now seen corresponding path program 1 times [2023-11-29 01:24:13,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:13,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091437210] [2023-11-29 01:24:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:13,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:13,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:13,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091437210] [2023-11-29 01:24:13,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091437210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:13,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:24:13,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:24:13,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868270446] [2023-11-29 01:24:13,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:13,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:24:13,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:13,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:24:13,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:24:13,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2023-11-29 01:24:13,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 301 transitions, 1824 flow. Second operand has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:13,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:13,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2023-11-29 01:24:13,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:14,702 INFO L124 PetriNetUnfolderBase]: 1133/3793 cut-off events. [2023-11-29 01:24:14,703 INFO L125 PetriNetUnfolderBase]: For 7682/7793 co-relation queries the response was YES. [2023-11-29 01:24:14,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11400 conditions, 3793 events. 1133/3793 cut-off events. For 7682/7793 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 28672 event pairs, 271 based on Foata normal form. 21/3680 useless extension candidates. Maximal degree in co-relation 11196. Up to 1861 conditions per place. [2023-11-29 01:24:14,741 INFO L140 encePairwiseOnDemand]: 109/124 looper letters, 172 selfloop transitions, 71 changer transitions 0/362 dead transitions. [2023-11-29 01:24:14,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 362 transitions, 2770 flow [2023-11-29 01:24:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:24:14,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:24:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-11-29 01:24:14,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7889784946236559 [2023-11-29 01:24:14,744 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-11-29 01:24:14,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-11-29 01:24:14,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:14,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-11-29 01:24:14,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:14,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:14,749 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:14,749 INFO L175 Difference]: Start difference. First operand has 201 places, 301 transitions, 1824 flow. Second operand 6 states and 587 transitions. [2023-11-29 01:24:14,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 362 transitions, 2770 flow [2023-11-29 01:24:14,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 362 transitions, 2638 flow, removed 66 selfloop flow, removed 0 redundant places. [2023-11-29 01:24:14,780 INFO L231 Difference]: Finished difference. Result has 211 places, 354 transitions, 2474 flow [2023-11-29 01:24:14,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2474, PETRI_PLACES=211, PETRI_TRANSITIONS=354} [2023-11-29 01:24:14,782 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 90 predicate places. [2023-11-29 01:24:14,782 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 354 transitions, 2474 flow [2023-11-29 01:24:14,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:14,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:14,783 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:14,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:24:14,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:14,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash -827547491, now seen corresponding path program 1 times [2023-11-29 01:24:14,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:14,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138650740] [2023-11-29 01:24:14,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:14,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:24:15,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:15,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138650740] [2023-11-29 01:24:15,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138650740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:15,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530896591] [2023-11-29 01:24:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:15,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:15,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:15,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:15,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:24:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:15,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:24:15,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:16,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:16,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:16,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530896591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:16,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:16,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:24:16,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028325343] [2023-11-29 01:24:16,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:16,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:16,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:16,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:24:16,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:24:16,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 354 transitions, 2474 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:16,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:16,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:24:16,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:18,186 INFO L124 PetriNetUnfolderBase]: 2035/7731 cut-off events. [2023-11-29 01:24:18,186 INFO L125 PetriNetUnfolderBase]: For 16118/16357 co-relation queries the response was YES. [2023-11-29 01:24:18,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22639 conditions, 7731 events. 2035/7731 cut-off events. For 16118/16357 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 70701 event pairs, 294 based on Foata normal form. 61/7659 useless extension candidates. Maximal degree in co-relation 22418. Up to 1369 conditions per place. [2023-11-29 01:24:18,278 INFO L140 encePairwiseOnDemand]: 109/124 looper letters, 93 selfloop transitions, 16 changer transitions 2/433 dead transitions. [2023-11-29 01:24:18,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 433 transitions, 2998 flow [2023-11-29 01:24:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:24:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:24:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1028 transitions. [2023-11-29 01:24:18,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8290322580645161 [2023-11-29 01:24:18,282 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1028 transitions. [2023-11-29 01:24:18,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1028 transitions. [2023-11-29 01:24:18,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:18,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1028 transitions. [2023-11-29 01:24:18,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.8) internal successors, (1028), 10 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:18,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:18,289 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:18,289 INFO L175 Difference]: Start difference. First operand has 211 places, 354 transitions, 2474 flow. Second operand 10 states and 1028 transitions. [2023-11-29 01:24:18,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 433 transitions, 2998 flow [2023-11-29 01:24:18,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 433 transitions, 2828 flow, removed 85 selfloop flow, removed 0 redundant places. [2023-11-29 01:24:18,369 INFO L231 Difference]: Finished difference. Result has 227 places, 369 transitions, 2433 flow [2023-11-29 01:24:18,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2433, PETRI_PLACES=227, PETRI_TRANSITIONS=369} [2023-11-29 01:24:18,370 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 106 predicate places. [2023-11-29 01:24:18,370 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 369 transitions, 2433 flow [2023-11-29 01:24:18,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:18,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:18,371 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:18,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:24:18,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:24:18,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:18,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1333625515, now seen corresponding path program 2 times [2023-11-29 01:24:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:18,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41011721] [2023-11-29 01:24:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:24:19,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:19,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41011721] [2023-11-29 01:24:19,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41011721] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:19,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472939183] [2023-11-29 01:24:19,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:24:19,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:19,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:19,512 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:19,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:24:19,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:24:19,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:19,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:24:19,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:19,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:19,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:19,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472939183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:19,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:19,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:24:19,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434227648] [2023-11-29 01:24:19,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:19,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:19,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:19,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:19,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:24:20,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:24:20,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 369 transitions, 2433 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:20,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:20,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:24:20,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:22,047 INFO L124 PetriNetUnfolderBase]: 2346/8616 cut-off events. [2023-11-29 01:24:22,048 INFO L125 PetriNetUnfolderBase]: For 16892/17204 co-relation queries the response was YES. [2023-11-29 01:24:22,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25959 conditions, 8616 events. 2346/8616 cut-off events. For 16892/17204 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 80886 event pairs, 299 based on Foata normal form. 77/8526 useless extension candidates. Maximal degree in co-relation 25729. Up to 1637 conditions per place. [2023-11-29 01:24:22,109 INFO L140 encePairwiseOnDemand]: 110/124 looper letters, 112 selfloop transitions, 21 changer transitions 0/455 dead transitions. [2023-11-29 01:24:22,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 455 transitions, 3085 flow [2023-11-29 01:24:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:24:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:24:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1027 transitions. [2023-11-29 01:24:22,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8282258064516129 [2023-11-29 01:24:22,113 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1027 transitions. [2023-11-29 01:24:22,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1027 transitions. [2023-11-29 01:24:22,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:22,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1027 transitions. [2023-11-29 01:24:22,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.7) internal successors, (1027), 10 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:22,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:22,119 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:22,119 INFO L175 Difference]: Start difference. First operand has 227 places, 369 transitions, 2433 flow. Second operand 10 states and 1027 transitions. [2023-11-29 01:24:22,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 455 transitions, 3085 flow [2023-11-29 01:24:22,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 455 transitions, 3084 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:24:22,195 INFO L231 Difference]: Finished difference. Result has 240 places, 381 transitions, 2576 flow [2023-11-29 01:24:22,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2576, PETRI_PLACES=240, PETRI_TRANSITIONS=381} [2023-11-29 01:24:22,196 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 119 predicate places. [2023-11-29 01:24:22,196 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 381 transitions, 2576 flow [2023-11-29 01:24:22,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:22,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:22,197 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:22,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:24:22,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:24:22,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:22,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:22,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1135079697, now seen corresponding path program 3 times [2023-11-29 01:24:22,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001475478] [2023-11-29 01:24:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:22,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:24:23,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001475478] [2023-11-29 01:24:23,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001475478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190956696] [2023-11-29 01:24:23,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:24:23,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:23,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:23,607 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:23,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:24:23,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 01:24:23,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:23,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:24:23,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:23,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:24,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:24,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190956696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:24,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:24,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:24:24,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88822267] [2023-11-29 01:24:24,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:24,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:24,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:24,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:24,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:24:24,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:24:24,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 381 transitions, 2576 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:24,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:24,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:24:24,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:26,435 INFO L124 PetriNetUnfolderBase]: 2626/9656 cut-off events. [2023-11-29 01:24:26,435 INFO L125 PetriNetUnfolderBase]: For 21584/22002 co-relation queries the response was YES. [2023-11-29 01:24:26,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30169 conditions, 9656 events. 2626/9656 cut-off events. For 21584/22002 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 91722 event pairs, 318 based on Foata normal form. 92/9594 useless extension candidates. Maximal degree in co-relation 29933. Up to 1757 conditions per place. [2023-11-29 01:24:26,500 INFO L140 encePairwiseOnDemand]: 109/124 looper letters, 118 selfloop transitions, 23 changer transitions 2/465 dead transitions. [2023-11-29 01:24:26,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 465 transitions, 3411 flow [2023-11-29 01:24:26,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:24:26,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:24:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1033 transitions. [2023-11-29 01:24:26,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8330645161290322 [2023-11-29 01:24:26,502 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1033 transitions. [2023-11-29 01:24:26,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1033 transitions. [2023-11-29 01:24:26,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:26,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1033 transitions. [2023-11-29 01:24:26,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.3) internal successors, (1033), 10 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:26,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:26,507 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:26,507 INFO L175 Difference]: Start difference. First operand has 240 places, 381 transitions, 2576 flow. Second operand 10 states and 1033 transitions. [2023-11-29 01:24:26,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 465 transitions, 3411 flow [2023-11-29 01:24:26,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 465 transitions, 3345 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-29 01:24:26,611 INFO L231 Difference]: Finished difference. Result has 251 places, 393 transitions, 2745 flow [2023-11-29 01:24:26,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2745, PETRI_PLACES=251, PETRI_TRANSITIONS=393} [2023-11-29 01:24:26,613 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 130 predicate places. [2023-11-29 01:24:26,613 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 393 transitions, 2745 flow [2023-11-29 01:24:26,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:26,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:26,614 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:26,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:24:26,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:24:26,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:26,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:26,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2046630521, now seen corresponding path program 4 times [2023-11-29 01:24:26,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:26,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834405568] [2023-11-29 01:24:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:26,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:24:27,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:27,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834405568] [2023-11-29 01:24:27,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834405568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:27,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045956027] [2023-11-29 01:24:27,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:24:27,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:27,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:27,909 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:27,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:24:28,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:24:28,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:28,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:24:28,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:28,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:28,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:28,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045956027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:28,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:28,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-11-29 01:24:28,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560203173] [2023-11-29 01:24:28,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:28,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:24:28,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:24:28,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:24:28,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:24:28,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 393 transitions, 2745 flow. Second operand has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:28,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:28,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:24:28,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:31,539 INFO L124 PetriNetUnfolderBase]: 3286/12060 cut-off events. [2023-11-29 01:24:31,539 INFO L125 PetriNetUnfolderBase]: For 28758/29274 co-relation queries the response was YES. [2023-11-29 01:24:31,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38389 conditions, 12060 events. 3286/12060 cut-off events. For 28758/29274 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 118216 event pairs, 333 based on Foata normal form. 118/12002 useless extension candidates. Maximal degree in co-relation 38147. Up to 2263 conditions per place. [2023-11-29 01:24:31,626 INFO L140 encePairwiseOnDemand]: 110/124 looper letters, 113 selfloop transitions, 74 changer transitions 0/509 dead transitions. [2023-11-29 01:24:31,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 509 transitions, 3910 flow [2023-11-29 01:24:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:24:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 01:24:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1530 transitions. [2023-11-29 01:24:31,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8225806451612904 [2023-11-29 01:24:31,629 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1530 transitions. [2023-11-29 01:24:31,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1530 transitions. [2023-11-29 01:24:31,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:31,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1530 transitions. [2023-11-29 01:24:31,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 102.0) internal successors, (1530), 15 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:31,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 124.0) internal successors, (1984), 16 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:31,636 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 124.0) internal successors, (1984), 16 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:31,637 INFO L175 Difference]: Start difference. First operand has 251 places, 393 transitions, 2745 flow. Second operand 15 states and 1530 transitions. [2023-11-29 01:24:31,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 509 transitions, 3910 flow [2023-11-29 01:24:31,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 509 transitions, 3829 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-29 01:24:31,780 INFO L231 Difference]: Finished difference. Result has 270 places, 436 transitions, 3364 flow [2023-11-29 01:24:31,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3364, PETRI_PLACES=270, PETRI_TRANSITIONS=436} [2023-11-29 01:24:31,781 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 149 predicate places. [2023-11-29 01:24:31,781 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 436 transitions, 3364 flow [2023-11-29 01:24:31,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:31,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:31,782 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:31,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:24:31,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:24:31,983 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:31,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:31,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2122906875, now seen corresponding path program 5 times [2023-11-29 01:24:31,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:31,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229251254] [2023-11-29 01:24:31,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:31,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:24:32,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:32,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229251254] [2023-11-29 01:24:32,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229251254] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:32,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589638661] [2023-11-29 01:24:32,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:24:32,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:32,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:32,775 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:32,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:24:32,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 01:24:32,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:32,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:24:32,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:33,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:33,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:33,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589638661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:33,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:33,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:24:33,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544276105] [2023-11-29 01:24:33,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:33,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:33,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:33,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:33,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:24:33,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:24:33,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 436 transitions, 3364 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:33,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:33,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:24:33,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:36,798 INFO L124 PetriNetUnfolderBase]: 3998/14291 cut-off events. [2023-11-29 01:24:36,798 INFO L125 PetriNetUnfolderBase]: For 40111/40846 co-relation queries the response was YES. [2023-11-29 01:24:36,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47080 conditions, 14291 events. 3998/14291 cut-off events. For 40111/40846 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 144977 event pairs, 373 based on Foata normal form. 157/14220 useless extension candidates. Maximal degree in co-relation 46830. Up to 2667 conditions per place. [2023-11-29 01:24:36,926 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 178 selfloop transitions, 49 changer transitions 1/550 dead transitions. [2023-11-29 01:24:36,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 550 transitions, 4883 flow [2023-11-29 01:24:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:24:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:24:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1340 transitions. [2023-11-29 01:24:36,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8312655086848635 [2023-11-29 01:24:36,928 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1340 transitions. [2023-11-29 01:24:36,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1340 transitions. [2023-11-29 01:24:36,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:36,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1340 transitions. [2023-11-29 01:24:36,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.07692307692308) internal successors, (1340), 13 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:36,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:36,934 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:36,934 INFO L175 Difference]: Start difference. First operand has 270 places, 436 transitions, 3364 flow. Second operand 13 states and 1340 transitions. [2023-11-29 01:24:36,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 550 transitions, 4883 flow [2023-11-29 01:24:37,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 550 transitions, 4656 flow, removed 71 selfloop flow, removed 2 redundant places. [2023-11-29 01:24:37,175 INFO L231 Difference]: Finished difference. Result has 289 places, 470 transitions, 3859 flow [2023-11-29 01:24:37,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3859, PETRI_PLACES=289, PETRI_TRANSITIONS=470} [2023-11-29 01:24:37,176 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 168 predicate places. [2023-11-29 01:24:37,176 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 470 transitions, 3859 flow [2023-11-29 01:24:37,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:37,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:37,176 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:37,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:24:37,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:37,377 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:37,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1961048885, now seen corresponding path program 6 times [2023-11-29 01:24:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888400040] [2023-11-29 01:24:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:24:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:38,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888400040] [2023-11-29 01:24:38,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888400040] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:38,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720053492] [2023-11-29 01:24:38,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:24:38,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:38,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:38,131 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:38,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:24:38,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 01:24:38,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:38,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:24:38,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:38,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:38,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:38,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720053492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:38,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:38,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:24:38,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567377146] [2023-11-29 01:24:38,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:38,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:38,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:38,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:24:39,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:24:39,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 470 transitions, 3859 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:39,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:39,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:24:39,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:42,425 INFO L124 PetriNetUnfolderBase]: 4332/15644 cut-off events. [2023-11-29 01:24:42,425 INFO L125 PetriNetUnfolderBase]: For 46837/47602 co-relation queries the response was YES. [2023-11-29 01:24:42,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52451 conditions, 15644 events. 4332/15644 cut-off events. For 46837/47602 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 161689 event pairs, 422 based on Foata normal form. 134/15534 useless extension candidates. Maximal degree in co-relation 52298. Up to 2946 conditions per place. [2023-11-29 01:24:42,577 INFO L140 encePairwiseOnDemand]: 109/124 looper letters, 182 selfloop transitions, 45 changer transitions 0/549 dead transitions. [2023-11-29 01:24:42,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 549 transitions, 5039 flow [2023-11-29 01:24:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:24:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:24:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1036 transitions. [2023-11-29 01:24:42,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8354838709677419 [2023-11-29 01:24:42,580 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1036 transitions. [2023-11-29 01:24:42,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1036 transitions. [2023-11-29 01:24:42,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:42,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1036 transitions. [2023-11-29 01:24:42,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.6) internal successors, (1036), 10 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:42,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:42,585 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:42,585 INFO L175 Difference]: Start difference. First operand has 289 places, 470 transitions, 3859 flow. Second operand 10 states and 1036 transitions. [2023-11-29 01:24:42,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 549 transitions, 5039 flow [2023-11-29 01:24:42,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 549 transitions, 4939 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-11-29 01:24:42,796 INFO L231 Difference]: Finished difference. Result has 301 places, 488 transitions, 4184 flow [2023-11-29 01:24:42,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3788, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4184, PETRI_PLACES=301, PETRI_TRANSITIONS=488} [2023-11-29 01:24:42,797 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 180 predicate places. [2023-11-29 01:24:42,797 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 488 transitions, 4184 flow [2023-11-29 01:24:42,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:42,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:42,798 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:42,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:24:42,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:24:42,998 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:42,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash -291052003, now seen corresponding path program 7 times [2023-11-29 01:24:42,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:42,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509044526] [2023-11-29 01:24:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:42,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:24:43,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509044526] [2023-11-29 01:24:43,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509044526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404216614] [2023-11-29 01:24:43,570 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:24:43,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:43,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:43,571 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:43,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:24:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:43,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:24:43,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:43,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:43,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:43,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404216614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:43,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:43,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:24:43,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800566183] [2023-11-29 01:24:43,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:43,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:43,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:43,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:43,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:24:44,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:24:44,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 488 transitions, 4184 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:44,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:44,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:24:44,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:48,599 INFO L124 PetriNetUnfolderBase]: 5037/17936 cut-off events. [2023-11-29 01:24:48,599 INFO L125 PetriNetUnfolderBase]: For 59893/60863 co-relation queries the response was YES. [2023-11-29 01:24:48,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61405 conditions, 17936 events. 5037/17936 cut-off events. For 59893/60863 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 190678 event pairs, 482 based on Foata normal form. 181/17835 useless extension candidates. Maximal degree in co-relation 61204. Up to 3339 conditions per place. [2023-11-29 01:24:48,790 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 214 selfloop transitions, 56 changer transitions 0/592 dead transitions. [2023-11-29 01:24:48,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 592 transitions, 5901 flow [2023-11-29 01:24:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:24:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:24:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1342 transitions. [2023-11-29 01:24:48,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8325062034739454 [2023-11-29 01:24:48,793 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1342 transitions. [2023-11-29 01:24:48,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1342 transitions. [2023-11-29 01:24:48,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:48,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1342 transitions. [2023-11-29 01:24:48,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.23076923076923) internal successors, (1342), 13 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:48,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:48,798 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:48,798 INFO L175 Difference]: Start difference. First operand has 301 places, 488 transitions, 4184 flow. Second operand 13 states and 1342 transitions. [2023-11-29 01:24:48,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 592 transitions, 5901 flow [2023-11-29 01:24:49,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 592 transitions, 5768 flow, removed 33 selfloop flow, removed 3 redundant places. [2023-11-29 01:24:49,080 INFO L231 Difference]: Finished difference. Result has 320 places, 526 transitions, 4872 flow [2023-11-29 01:24:49,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4872, PETRI_PLACES=320, PETRI_TRANSITIONS=526} [2023-11-29 01:24:49,081 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 199 predicate places. [2023-11-29 01:24:49,081 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 526 transitions, 4872 flow [2023-11-29 01:24:49,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:49,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:49,082 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:49,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:24:49,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:24:49,282 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:49,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash -256280809, now seen corresponding path program 8 times [2023-11-29 01:24:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479344068] [2023-11-29 01:24:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:24:49,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:49,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479344068] [2023-11-29 01:24:49,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479344068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:49,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766324173] [2023-11-29 01:24:49,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:24:49,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:49,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:49,775 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:49,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:24:50,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:24:50,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:50,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:24:50,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:50,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:50,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:50,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766324173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:50,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:50,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:24:50,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485348316] [2023-11-29 01:24:50,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:50,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:50,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:50,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:50,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:24:50,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:24:50,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 526 transitions, 4872 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:50,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:50,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:24:50,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:55,865 INFO L124 PetriNetUnfolderBase]: 6005/21264 cut-off events. [2023-11-29 01:24:55,865 INFO L125 PetriNetUnfolderBase]: For 78569/79763 co-relation queries the response was YES. [2023-11-29 01:24:56,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74215 conditions, 21264 events. 6005/21264 cut-off events. For 78569/79763 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 234447 event pairs, 533 based on Foata normal form. 217/21153 useless extension candidates. Maximal degree in co-relation 73991. Up to 4045 conditions per place. [2023-11-29 01:24:56,084 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 247 selfloop transitions, 65 changer transitions 0/634 dead transitions. [2023-11-29 01:24:56,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 634 transitions, 6855 flow [2023-11-29 01:24:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:24:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:24:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1340 transitions. [2023-11-29 01:24:56,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8312655086848635 [2023-11-29 01:24:56,086 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1340 transitions. [2023-11-29 01:24:56,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1340 transitions. [2023-11-29 01:24:56,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:56,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1340 transitions. [2023-11-29 01:24:56,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.07692307692308) internal successors, (1340), 13 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:56,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:56,090 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:56,090 INFO L175 Difference]: Start difference. First operand has 320 places, 526 transitions, 4872 flow. Second operand 13 states and 1340 transitions. [2023-11-29 01:24:56,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 634 transitions, 6855 flow [2023-11-29 01:24:56,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 634 transitions, 6698 flow, removed 78 selfloop flow, removed 1 redundant places. [2023-11-29 01:24:56,469 INFO L231 Difference]: Finished difference. Result has 341 places, 561 transitions, 5569 flow [2023-11-29 01:24:56,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4715, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5569, PETRI_PLACES=341, PETRI_TRANSITIONS=561} [2023-11-29 01:24:56,470 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 220 predicate places. [2023-11-29 01:24:56,470 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 561 transitions, 5569 flow [2023-11-29 01:24:56,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:56,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:56,471 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:56,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:24:56,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:24:56,671 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:24:56,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash -648630617, now seen corresponding path program 9 times [2023-11-29 01:24:56,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:56,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717746019] [2023-11-29 01:24:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:56,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:24:57,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717746019] [2023-11-29 01:24:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717746019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180075259] [2023-11-29 01:24:57,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:24:57,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:57,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:57,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:57,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:24:57,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 01:24:57,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:57,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:24:57,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:57,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:24:57,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180075259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:57,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:57,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:24:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669207903] [2023-11-29 01:24:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:57,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:57,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:24:57,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:24:57,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 561 transitions, 5569 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:24:57,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:57,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:24:57,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:03,568 INFO L124 PetriNetUnfolderBase]: 6619/23277 cut-off events. [2023-11-29 01:25:03,568 INFO L125 PetriNetUnfolderBase]: For 97805/99124 co-relation queries the response was YES. [2023-11-29 01:25:03,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83414 conditions, 23277 events. 6619/23277 cut-off events. For 97805/99124 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 261286 event pairs, 585 based on Foata normal form. 226/23162 useless extension candidates. Maximal degree in co-relation 83233. Up to 4358 conditions per place. [2023-11-29 01:25:03,844 INFO L140 encePairwiseOnDemand]: 108/124 looper letters, 268 selfloop transitions, 57 changer transitions 0/647 dead transitions. [2023-11-29 01:25:03,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 647 transitions, 7308 flow [2023-11-29 01:25:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:25:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:25:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1040 transitions. [2023-11-29 01:25:03,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2023-11-29 01:25:03,846 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1040 transitions. [2023-11-29 01:25:03,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1040 transitions. [2023-11-29 01:25:03,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:03,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1040 transitions. [2023-11-29 01:25:03,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 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) [2023-11-29 01:25:03,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:03,849 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:03,850 INFO L175 Difference]: Start difference. First operand has 341 places, 561 transitions, 5569 flow. Second operand 10 states and 1040 transitions. [2023-11-29 01:25:03,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 647 transitions, 7308 flow [2023-11-29 01:25:04,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 647 transitions, 7131 flow, removed 88 selfloop flow, removed 1 redundant places. [2023-11-29 01:25:04,341 INFO L231 Difference]: Finished difference. Result has 355 places, 582 transitions, 5963 flow [2023-11-29 01:25:04,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5392, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5963, PETRI_PLACES=355, PETRI_TRANSITIONS=582} [2023-11-29 01:25:04,342 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 234 predicate places. [2023-11-29 01:25:04,343 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 582 transitions, 5963 flow [2023-11-29 01:25:04,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:04,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:04,343 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:25:04,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:25:04,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:25:04,548 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:25:04,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash -470467763, now seen corresponding path program 10 times [2023-11-29 01:25:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:04,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353082863] [2023-11-29 01:25:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:04,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:25:05,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:05,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353082863] [2023-11-29 01:25:05,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353082863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:05,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142107622] [2023-11-29 01:25:05,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:25:05,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:05,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:05,278 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:05,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:25:05,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:25:05,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:25:05,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 01:25:05,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:05,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:25:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 01:25:05,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:05,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-11-29 01:25:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:25:05,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142107622] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:05,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:25:05,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 18] total 27 [2023-11-29 01:25:05,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731922029] [2023-11-29 01:25:05,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:05,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:25:05,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:05,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:25:05,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:25:06,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2023-11-29 01:25:06,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 582 transitions, 5963 flow. Second operand has 9 states, 9 states have (on average 96.77777777777777) internal successors, (871), 9 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:06,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:06,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2023-11-29 01:25:06,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:12,024 INFO L124 PetriNetUnfolderBase]: 6585/23239 cut-off events. [2023-11-29 01:25:12,024 INFO L125 PetriNetUnfolderBase]: For 103117/104436 co-relation queries the response was YES. [2023-11-29 01:25:12,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83946 conditions, 23239 events. 6585/23239 cut-off events. For 103117/104436 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 260886 event pairs, 549 based on Foata normal form. 361/23279 useless extension candidates. Maximal degree in co-relation 83768. Up to 4357 conditions per place. [2023-11-29 01:25:12,321 INFO L140 encePairwiseOnDemand]: 109/124 looper letters, 206 selfloop transitions, 149 changer transitions 0/678 dead transitions. [2023-11-29 01:25:12,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 678 transitions, 7896 flow [2023-11-29 01:25:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:25:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 01:25:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1573 transitions. [2023-11-29 01:25:12,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8456989247311828 [2023-11-29 01:25:12,324 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1573 transitions. [2023-11-29 01:25:12,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1573 transitions. [2023-11-29 01:25:12,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:12,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1573 transitions. [2023-11-29 01:25:12,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 104.86666666666666) internal successors, (1573), 15 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:12,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 124.0) internal successors, (1984), 16 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:12,328 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 124.0) internal successors, (1984), 16 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:12,328 INFO L175 Difference]: Start difference. First operand has 355 places, 582 transitions, 5963 flow. Second operand 15 states and 1573 transitions. [2023-11-29 01:25:12,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 678 transitions, 7896 flow [2023-11-29 01:25:12,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 678 transitions, 7721 flow, removed 67 selfloop flow, removed 3 redundant places. [2023-11-29 01:25:12,990 INFO L231 Difference]: Finished difference. Result has 373 places, 603 transitions, 6622 flow [2023-11-29 01:25:12,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5816, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6622, PETRI_PLACES=373, PETRI_TRANSITIONS=603} [2023-11-29 01:25:12,991 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 252 predicate places. [2023-11-29 01:25:12,991 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 603 transitions, 6622 flow [2023-11-29 01:25:12,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.77777777777777) internal successors, (871), 9 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:12,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:12,991 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:25:12,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:25:13,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:13,192 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:25:13,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:13,192 INFO L85 PathProgramCache]: Analyzing trace with hash -702620577, now seen corresponding path program 11 times [2023-11-29 01:25:13,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:13,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106841675] [2023-11-29 01:25:13,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:13,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:25:13,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:13,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106841675] [2023-11-29 01:25:13,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106841675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:13,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342441684] [2023-11-29 01:25:13,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:25:13,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:13,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:13,685 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:13,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:25:13,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 01:25:13,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:25:13,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:25:13,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:14,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:25:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:25:14,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:14,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342441684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:14,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:25:14,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:25:14,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860048784] [2023-11-29 01:25:14,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:14,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:25:14,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:25:14,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:25:14,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:25:14,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 603 transitions, 6622 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:14,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:14,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:25:14,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:20,938 INFO L124 PetriNetUnfolderBase]: 6973/24487 cut-off events. [2023-11-29 01:25:20,939 INFO L125 PetriNetUnfolderBase]: For 116361/117699 co-relation queries the response was YES. [2023-11-29 01:25:21,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89080 conditions, 24487 events. 6973/24487 cut-off events. For 116361/117699 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 277626 event pairs, 606 based on Foata normal form. 228/24348 useless extension candidates. Maximal degree in co-relation 88890. Up to 4641 conditions per place. [2023-11-29 01:25:21,370 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 283 selfloop transitions, 69 changer transitions 0/674 dead transitions. [2023-11-29 01:25:21,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 674 transitions, 8324 flow [2023-11-29 01:25:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:25:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:25:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1346 transitions. [2023-11-29 01:25:21,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8349875930521092 [2023-11-29 01:25:21,372 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1346 transitions. [2023-11-29 01:25:21,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1346 transitions. [2023-11-29 01:25:21,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:21,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1346 transitions. [2023-11-29 01:25:21,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.53846153846153) internal successors, (1346), 13 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:21,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:21,375 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:21,375 INFO L175 Difference]: Start difference. First operand has 373 places, 603 transitions, 6622 flow. Second operand 13 states and 1346 transitions. [2023-11-29 01:25:21,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 674 transitions, 8324 flow [2023-11-29 01:25:22,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 674 transitions, 8031 flow, removed 136 selfloop flow, removed 1 redundant places. [2023-11-29 01:25:22,020 INFO L231 Difference]: Finished difference. Result has 390 places, 619 transitions, 6893 flow [2023-11-29 01:25:22,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6441, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6893, PETRI_PLACES=390, PETRI_TRANSITIONS=619} [2023-11-29 01:25:22,021 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 269 predicate places. [2023-11-29 01:25:22,021 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 619 transitions, 6893 flow [2023-11-29 01:25:22,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:22,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:22,022 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:25:22,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:25:22,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:22,222 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:25:22,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:22,223 INFO L85 PathProgramCache]: Analyzing trace with hash 617619655, now seen corresponding path program 12 times [2023-11-29 01:25:22,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:22,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007728836] [2023-11-29 01:25:22,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:22,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:22,631 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:25:22,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:22,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007728836] [2023-11-29 01:25:22,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007728836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:22,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538514540] [2023-11-29 01:25:22,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:25:22,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:22,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:22,633 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:22,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:25:22,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 01:25:22,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:25:22,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:25:22,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:22,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:25:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:25:22,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:22,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538514540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:22,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:25:22,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:25:22,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129766962] [2023-11-29 01:25:22,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:22,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:25:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:25:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:25:23,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:25:23,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 619 transitions, 6893 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:23,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:23,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:25:23,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:29,918 INFO L124 PetriNetUnfolderBase]: 7049/24781 cut-off events. [2023-11-29 01:25:29,918 INFO L125 PetriNetUnfolderBase]: For 114721/116160 co-relation queries the response was YES. [2023-11-29 01:25:30,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89501 conditions, 24781 events. 7049/24781 cut-off events. For 114721/116160 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 281678 event pairs, 619 based on Foata normal form. 263/24654 useless extension candidates. Maximal degree in co-relation 89304. Up to 4746 conditions per place. [2023-11-29 01:25:30,260 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 281 selfloop transitions, 72 changer transitions 0/675 dead transitions. [2023-11-29 01:25:30,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 675 transitions, 8312 flow [2023-11-29 01:25:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:25:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:25:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1339 transitions. [2023-11-29 01:25:30,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8306451612903226 [2023-11-29 01:25:30,262 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1339 transitions. [2023-11-29 01:25:30,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1339 transitions. [2023-11-29 01:25:30,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:30,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1339 transitions. [2023-11-29 01:25:30,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.0) internal successors, (1339), 13 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) [2023-11-29 01:25:30,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:30,266 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:30,266 INFO L175 Difference]: Start difference. First operand has 390 places, 619 transitions, 6893 flow. Second operand 13 states and 1339 transitions. [2023-11-29 01:25:30,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 675 transitions, 8312 flow [2023-11-29 01:25:31,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 675 transitions, 8204 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-11-29 01:25:31,029 INFO L231 Difference]: Finished difference. Result has 404 places, 627 transitions, 7130 flow [2023-11-29 01:25:31,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6718, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7130, PETRI_PLACES=404, PETRI_TRANSITIONS=627} [2023-11-29 01:25:31,030 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 283 predicate places. [2023-11-29 01:25:31,030 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 627 transitions, 7130 flow [2023-11-29 01:25:31,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:31,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:31,030 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:25:31,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:25:31,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:31,231 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:25:31,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:31,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1192558513, now seen corresponding path program 13 times [2023-11-29 01:25:31,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:31,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719478438] [2023-11-29 01:25:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:31,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:25:31,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719478438] [2023-11-29 01:25:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719478438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340636551] [2023-11-29 01:25:31,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:25:31,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:31,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:31,762 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:31,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:25:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:31,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:25:31,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:32,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:25:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:25:32,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:32,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340636551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:32,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:25:32,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:25:32,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441367567] [2023-11-29 01:25:32,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:32,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:25:32,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:32,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:25:32,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:25:32,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:25:32,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 627 transitions, 7130 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:32,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:32,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:25:32,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:39,269 INFO L124 PetriNetUnfolderBase]: 7072/24898 cut-off events. [2023-11-29 01:25:39,269 INFO L125 PetriNetUnfolderBase]: For 114379/115822 co-relation queries the response was YES. [2023-11-29 01:25:39,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89812 conditions, 24898 events. 7072/24898 cut-off events. For 114379/115822 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 283242 event pairs, 610 based on Foata normal form. 330/24840 useless extension candidates. Maximal degree in co-relation 89609. Up to 4779 conditions per place. [2023-11-29 01:25:39,614 INFO L140 encePairwiseOnDemand]: 109/124 looper letters, 266 selfloop transitions, 106 changer transitions 0/694 dead transitions. [2023-11-29 01:25:39,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 694 transitions, 8773 flow [2023-11-29 01:25:39,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:25:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:25:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1032 transitions. [2023-11-29 01:25:39,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.832258064516129 [2023-11-29 01:25:39,616 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1032 transitions. [2023-11-29 01:25:39,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1032 transitions. [2023-11-29 01:25:39,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:39,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1032 transitions. [2023-11-29 01:25:39,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.2) internal successors, (1032), 10 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:39,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:39,619 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:39,619 INFO L175 Difference]: Start difference. First operand has 404 places, 627 transitions, 7130 flow. Second operand 10 states and 1032 transitions. [2023-11-29 01:25:39,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 694 transitions, 8773 flow [2023-11-29 01:25:40,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 694 transitions, 8684 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-29 01:25:40,286 INFO L231 Difference]: Finished difference. Result has 414 places, 640 transitions, 7712 flow [2023-11-29 01:25:40,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7049, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7712, PETRI_PLACES=414, PETRI_TRANSITIONS=640} [2023-11-29 01:25:40,287 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 293 predicate places. [2023-11-29 01:25:40,287 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 640 transitions, 7712 flow [2023-11-29 01:25:40,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:40,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:40,287 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:25:40,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:25:40,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:40,488 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:25:40,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash 306922515, now seen corresponding path program 14 times [2023-11-29 01:25:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:40,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815787174] [2023-11-29 01:25:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:40,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:25:41,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815787174] [2023-11-29 01:25:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815787174] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468037401] [2023-11-29 01:25:41,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:25:41,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:41,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:41,177 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:41,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:25:41,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:25:41,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:25:41,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:25:41,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:41,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:25:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:25:41,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:41,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468037401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:41,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:25:41,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:25:41,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676174812] [2023-11-29 01:25:41,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:41,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:25:41,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:25:41,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:25:41,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:25:41,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 640 transitions, 7712 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:41,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:41,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:25:41,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:48,933 INFO L124 PetriNetUnfolderBase]: 7622/26490 cut-off events. [2023-11-29 01:25:48,933 INFO L125 PetriNetUnfolderBase]: For 132157/133778 co-relation queries the response was YES. [2023-11-29 01:25:49,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96661 conditions, 26490 events. 7622/26490 cut-off events. For 132157/133778 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 304469 event pairs, 635 based on Foata normal form. 325/26415 useless extension candidates. Maximal degree in co-relation 96450. Up to 5093 conditions per place. [2023-11-29 01:25:49,463 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 312 selfloop transitions, 81 changer transitions 0/715 dead transitions. [2023-11-29 01:25:49,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 715 transitions, 9544 flow [2023-11-29 01:25:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:25:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:25:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1333 transitions. [2023-11-29 01:25:49,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8269230769230769 [2023-11-29 01:25:49,466 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1333 transitions. [2023-11-29 01:25:49,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1333 transitions. [2023-11-29 01:25:49,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:49,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1333 transitions. [2023-11-29 01:25:49,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 102.53846153846153) internal successors, (1333), 13 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:49,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:49,471 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:49,471 INFO L175 Difference]: Start difference. First operand has 414 places, 640 transitions, 7712 flow. Second operand 13 states and 1333 transitions. [2023-11-29 01:25:49,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 715 transitions, 9544 flow [2023-11-29 01:25:50,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 715 transitions, 9274 flow, removed 116 selfloop flow, removed 2 redundant places. [2023-11-29 01:25:50,229 INFO L231 Difference]: Finished difference. Result has 431 places, 661 transitions, 8164 flow [2023-11-29 01:25:50,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7531, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8164, PETRI_PLACES=431, PETRI_TRANSITIONS=661} [2023-11-29 01:25:50,230 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 310 predicate places. [2023-11-29 01:25:50,230 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 661 transitions, 8164 flow [2023-11-29 01:25:50,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:50,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:50,231 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:25:50,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:25:50,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:25:50,431 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:25:50,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:50,432 INFO L85 PathProgramCache]: Analyzing trace with hash -97407499, now seen corresponding path program 15 times [2023-11-29 01:25:50,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:50,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961550694] [2023-11-29 01:25:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:25:50,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:50,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961550694] [2023-11-29 01:25:50,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961550694] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:50,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843333513] [2023-11-29 01:25:50,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:25:50,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:50,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:50,778 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:50,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:25:50,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 01:25:50,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:25:50,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:25:50,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:51,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:25:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:25:51,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:51,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843333513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:51,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:25:51,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:25:51,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306516287] [2023-11-29 01:25:51,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:51,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:25:51,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:25:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:25:51,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:25:51,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 661 transitions, 8164 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:51,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:51,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:25:51,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:58,762 INFO L124 PetriNetUnfolderBase]: 7623/26512 cut-off events. [2023-11-29 01:25:58,762 INFO L125 PetriNetUnfolderBase]: For 128546/130262 co-relation queries the response was YES. [2023-11-29 01:25:59,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96525 conditions, 26512 events. 7623/26512 cut-off events. For 128546/130262 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 304721 event pairs, 636 based on Foata normal form. 352/26464 useless extension candidates. Maximal degree in co-relation 96310. Up to 5098 conditions per place. [2023-11-29 01:25:59,191 INFO L140 encePairwiseOnDemand]: 108/124 looper letters, 301 selfloop transitions, 95 changer transitions 0/718 dead transitions. [2023-11-29 01:25:59,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 718 transitions, 9685 flow [2023-11-29 01:25:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:25:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:25:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1036 transitions. [2023-11-29 01:25:59,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8354838709677419 [2023-11-29 01:25:59,193 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1036 transitions. [2023-11-29 01:25:59,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1036 transitions. [2023-11-29 01:25:59,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:59,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1036 transitions. [2023-11-29 01:25:59,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.6) internal successors, (1036), 10 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:59,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:59,196 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:59,196 INFO L175 Difference]: Start difference. First operand has 431 places, 661 transitions, 8164 flow. Second operand 10 states and 1036 transitions. [2023-11-29 01:25:59,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 718 transitions, 9685 flow [2023-11-29 01:26:00,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 718 transitions, 9546 flow, removed 30 selfloop flow, removed 4 redundant places. [2023-11-29 01:26:00,206 INFO L231 Difference]: Finished difference. Result has 440 places, 670 transitions, 8511 flow [2023-11-29 01:26:00,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8040, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8511, PETRI_PLACES=440, PETRI_TRANSITIONS=670} [2023-11-29 01:26:00,207 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 319 predicate places. [2023-11-29 01:26:00,207 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 670 transitions, 8511 flow [2023-11-29 01:26:00,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:00,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:00,207 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:00,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:26:00,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:00,408 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:26:00,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1498919431, now seen corresponding path program 16 times [2023-11-29 01:26:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437247249] [2023-11-29 01:26:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:26:01,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437247249] [2023-11-29 01:26:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437247249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518779281] [2023-11-29 01:26:01,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:26:01,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:01,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:01,031 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:01,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:26:01,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:26:01,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:26:01,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:26:01,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:01,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:26:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:26:01,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:01,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518779281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:01,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:01,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-11-29 01:26:01,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920387061] [2023-11-29 01:26:01,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:01,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:26:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:26:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:26:01,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:26:01,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 670 transitions, 8511 flow. Second operand has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:01,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:01,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:26:01,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:08,853 INFO L124 PetriNetUnfolderBase]: 7357/25781 cut-off events. [2023-11-29 01:26:08,853 INFO L125 PetriNetUnfolderBase]: For 125912/127518 co-relation queries the response was YES. [2023-11-29 01:26:09,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93912 conditions, 25781 events. 7357/25781 cut-off events. For 125912/127518 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 295206 event pairs, 594 based on Foata normal form. 419/25810 useless extension candidates. Maximal degree in co-relation 93690. Up to 4930 conditions per place. [2023-11-29 01:26:09,295 INFO L140 encePairwiseOnDemand]: 108/124 looper letters, 238 selfloop transitions, 180 changer transitions 0/740 dead transitions. [2023-11-29 01:26:09,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 740 transitions, 9975 flow [2023-11-29 01:26:09,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:26:09,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 01:26:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1557 transitions. [2023-11-29 01:26:09,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8370967741935483 [2023-11-29 01:26:09,298 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1557 transitions. [2023-11-29 01:26:09,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1557 transitions. [2023-11-29 01:26:09,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:09,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1557 transitions. [2023-11-29 01:26:09,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 103.8) internal successors, (1557), 15 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:09,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 124.0) internal successors, (1984), 16 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:09,303 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 124.0) internal successors, (1984), 16 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:09,303 INFO L175 Difference]: Start difference. First operand has 440 places, 670 transitions, 8511 flow. Second operand 15 states and 1557 transitions. [2023-11-29 01:26:09,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 740 transitions, 9975 flow [2023-11-29 01:26:10,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 740 transitions, 9752 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-11-29 01:26:10,184 INFO L231 Difference]: Finished difference. Result has 452 places, 677 transitions, 8830 flow [2023-11-29 01:26:10,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8243, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8830, PETRI_PLACES=452, PETRI_TRANSITIONS=677} [2023-11-29 01:26:10,185 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 331 predicate places. [2023-11-29 01:26:10,185 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 677 transitions, 8830 flow [2023-11-29 01:26:10,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:10,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:10,186 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:10,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:10,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:26:10,386 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:26:10,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:10,387 INFO L85 PathProgramCache]: Analyzing trace with hash -574288941, now seen corresponding path program 17 times [2023-11-29 01:26:10,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:10,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93947439] [2023-11-29 01:26:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:10,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:26:11,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93947439] [2023-11-29 01:26:11,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93947439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:11,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225515127] [2023-11-29 01:26:11,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:26:11,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:11,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:11,025 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:11,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:26:11,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 01:26:11,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:26:11,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:26:11,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:11,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:26:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:26:11,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:11,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225515127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:11,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:11,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:26:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908983622] [2023-11-29 01:26:11,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:11,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:26:11,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:11,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:26:11,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:26:11,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:26:11,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 677 transitions, 8830 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:11,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:11,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:26:11,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:18,584 INFO L124 PetriNetUnfolderBase]: 7059/24866 cut-off events. [2023-11-29 01:26:18,584 INFO L125 PetriNetUnfolderBase]: For 123457/125000 co-relation queries the response was YES. [2023-11-29 01:26:18,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90817 conditions, 24866 events. 7059/24866 cut-off events. For 123457/125000 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 283111 event pairs, 608 based on Foata normal form. 325/24800 useless extension candidates. Maximal degree in co-relation 90589. Up to 4768 conditions per place. [2023-11-29 01:26:18,990 INFO L140 encePairwiseOnDemand]: 108/124 looper letters, 309 selfloop transitions, 85 changer transitions 0/716 dead transitions. [2023-11-29 01:26:18,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 716 transitions, 9912 flow [2023-11-29 01:26:18,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:26:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:26:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1037 transitions. [2023-11-29 01:26:18,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8362903225806452 [2023-11-29 01:26:18,993 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1037 transitions. [2023-11-29 01:26:18,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1037 transitions. [2023-11-29 01:26:18,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:18,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1037 transitions. [2023-11-29 01:26:18,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:18,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:18,995 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:18,996 INFO L175 Difference]: Start difference. First operand has 452 places, 677 transitions, 8830 flow. Second operand 10 states and 1037 transitions. [2023-11-29 01:26:18,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 716 transitions, 9912 flow [2023-11-29 01:26:19,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 716 transitions, 9697 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-29 01:26:19,770 INFO L231 Difference]: Finished difference. Result has 457 places, 675 transitions, 8717 flow [2023-11-29 01:26:19,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8543, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8717, PETRI_PLACES=457, PETRI_TRANSITIONS=675} [2023-11-29 01:26:19,771 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 336 predicate places. [2023-11-29 01:26:19,771 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 675 transitions, 8717 flow [2023-11-29 01:26:19,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:19,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:19,772 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:19,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 01:26:19,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:26:19,972 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:26:19,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1688074543, now seen corresponding path program 18 times [2023-11-29 01:26:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117990097] [2023-11-29 01:26:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:26:20,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:20,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117990097] [2023-11-29 01:26:20,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117990097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:20,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866915931] [2023-11-29 01:26:20,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:26:20,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:20,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:20,417 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:20,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:26:20,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 01:26:20,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:26:20,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:26:20,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:20,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:26:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:26:20,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:20,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866915931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:20,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:20,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:26:20,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921501796] [2023-11-29 01:26:20,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:20,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:26:20,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:26:20,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:26:21,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:26:21,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 675 transitions, 8717 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:21,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:21,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:26:21,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:28,436 INFO L124 PetriNetUnfolderBase]: 7134/25136 cut-off events. [2023-11-29 01:26:28,436 INFO L125 PetriNetUnfolderBase]: For 117192/118768 co-relation queries the response was YES. [2023-11-29 01:26:28,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90420 conditions, 25136 events. 7134/25136 cut-off events. For 117192/118768 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 287616 event pairs, 618 based on Foata normal form. 340/25063 useless extension candidates. Maximal degree in co-relation 90190. Up to 4873 conditions per place. [2023-11-29 01:26:28,815 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 300 selfloop transitions, 106 changer transitions 0/728 dead transitions. [2023-11-29 01:26:28,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 728 transitions, 10044 flow [2023-11-29 01:26:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:26:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:26:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1329 transitions. [2023-11-29 01:26:28,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8244416873449132 [2023-11-29 01:26:28,817 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1329 transitions. [2023-11-29 01:26:28,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1329 transitions. [2023-11-29 01:26:28,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:28,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1329 transitions. [2023-11-29 01:26:28,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 102.23076923076923) internal successors, (1329), 13 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:28,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:28,821 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:28,821 INFO L175 Difference]: Start difference. First operand has 457 places, 675 transitions, 8717 flow. Second operand 13 states and 1329 transitions. [2023-11-29 01:26:28,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 728 transitions, 10044 flow [2023-11-29 01:26:29,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 728 transitions, 9882 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-29 01:26:29,579 INFO L231 Difference]: Finished difference. Result has 469 places, 685 transitions, 8992 flow [2023-11-29 01:26:29,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8501, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8992, PETRI_PLACES=469, PETRI_TRANSITIONS=685} [2023-11-29 01:26:29,580 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 348 predicate places. [2023-11-29 01:26:29,580 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 685 transitions, 8992 flow [2023-11-29 01:26:29,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:29,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:29,581 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:29,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 01:26:29,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:26:29,781 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:26:29,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:29,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1380778317, now seen corresponding path program 19 times [2023-11-29 01:26:29,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143951620] [2023-11-29 01:26:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:29,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:26:30,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:30,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143951620] [2023-11-29 01:26:30,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143951620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:30,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078396085] [2023-11-29 01:26:30,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:26:30,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:30,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:30,302 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:30,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:26:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:30,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:26:30,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:30,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:26:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:26:30,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:30,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078396085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:30,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:30,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:26:30,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776130904] [2023-11-29 01:26:30,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:30,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:26:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:26:30,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:26:31,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:26:31,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 685 transitions, 8992 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:31,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:31,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:26:31,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:39,014 INFO L124 PetriNetUnfolderBase]: 7495/26321 cut-off events. [2023-11-29 01:26:39,014 INFO L125 PetriNetUnfolderBase]: For 122126/123819 co-relation queries the response was YES. [2023-11-29 01:26:39,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94448 conditions, 26321 events. 7495/26321 cut-off events. For 122126/123819 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 304627 event pairs, 607 based on Foata normal form. 313/26203 useless extension candidates. Maximal degree in co-relation 94206. Up to 5150 conditions per place. [2023-11-29 01:26:39,481 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 370 selfloop transitions, 83 changer transitions 1/776 dead transitions. [2023-11-29 01:26:39,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 776 transitions, 11098 flow [2023-11-29 01:26:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:26:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:26:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1335 transitions. [2023-11-29 01:26:39,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8281637717121588 [2023-11-29 01:26:39,484 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1335 transitions. [2023-11-29 01:26:39,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1335 transitions. [2023-11-29 01:26:39,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:39,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1335 transitions. [2023-11-29 01:26:39,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 102.6923076923077) internal successors, (1335), 13 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:39,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:39,489 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:39,489 INFO L175 Difference]: Start difference. First operand has 469 places, 685 transitions, 8992 flow. Second operand 13 states and 1335 transitions. [2023-11-29 01:26:39,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 776 transitions, 11098 flow [2023-11-29 01:26:40,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 776 transitions, 10988 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-29 01:26:40,525 INFO L231 Difference]: Finished difference. Result has 485 places, 706 transitions, 9591 flow [2023-11-29 01:26:40,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9591, PETRI_PLACES=485, PETRI_TRANSITIONS=706} [2023-11-29 01:26:40,526 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 364 predicate places. [2023-11-29 01:26:40,526 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 706 transitions, 9591 flow [2023-11-29 01:26:40,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:40,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:40,527 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:40,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 01:26:40,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:26:40,727 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:26:40,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2052407439, now seen corresponding path program 20 times [2023-11-29 01:26:40,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:40,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672674822] [2023-11-29 01:26:40,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:40,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:26:41,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:41,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672674822] [2023-11-29 01:26:41,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672674822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:41,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430909782] [2023-11-29 01:26:41,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:26:41,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:41,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:41,249 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:41,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:26:41,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:26:41,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:26:41,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:26:41,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:41,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:26:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:26:41,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:41,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430909782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:41,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:41,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:26:41,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957429869] [2023-11-29 01:26:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:41,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:26:41,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:26:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:26:42,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:26:42,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 706 transitions, 9591 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:42,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:42,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:26:42,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:49,846 INFO L124 PetriNetUnfolderBase]: 7516/26400 cut-off events. [2023-11-29 01:26:49,846 INFO L125 PetriNetUnfolderBase]: For 126124/127850 co-relation queries the response was YES. [2023-11-29 01:26:50,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95180 conditions, 26400 events. 7516/26400 cut-off events. For 126124/127850 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 305868 event pairs, 611 based on Foata normal form. 331/26296 useless extension candidates. Maximal degree in co-relation 94928. Up to 5165 conditions per place. [2023-11-29 01:26:50,330 INFO L140 encePairwiseOnDemand]: 108/124 looper letters, 362 selfloop transitions, 90 changer transitions 1/775 dead transitions. [2023-11-29 01:26:50,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 775 transitions, 11275 flow [2023-11-29 01:26:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:26:50,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:26:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1032 transitions. [2023-11-29 01:26:50,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.832258064516129 [2023-11-29 01:26:50,332 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1032 transitions. [2023-11-29 01:26:50,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1032 transitions. [2023-11-29 01:26:50,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:50,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1032 transitions. [2023-11-29 01:26:50,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.2) internal successors, (1032), 10 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:50,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:50,336 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:50,336 INFO L175 Difference]: Start difference. First operand has 485 places, 706 transitions, 9591 flow. Second operand 10 states and 1032 transitions. [2023-11-29 01:26:50,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 775 transitions, 11275 flow [2023-11-29 01:26:51,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 775 transitions, 11097 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-11-29 01:26:51,412 INFO L231 Difference]: Finished difference. Result has 494 places, 714 transitions, 9857 flow [2023-11-29 01:26:51,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9415, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9857, PETRI_PLACES=494, PETRI_TRANSITIONS=714} [2023-11-29 01:26:51,413 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 373 predicate places. [2023-11-29 01:26:51,413 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 714 transitions, 9857 flow [2023-11-29 01:26:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:51,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:51,414 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:51,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 01:26:51,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:26:51,614 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:26:51,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1164727943, now seen corresponding path program 21 times [2023-11-29 01:26:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:51,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528492083] [2023-11-29 01:26:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:51,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:26:52,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:52,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528492083] [2023-11-29 01:26:52,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528492083] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:52,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550530828] [2023-11-29 01:26:52,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:26:52,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:52,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:52,141 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:52,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 01:26:52,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 01:26:52,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:26:52,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:26:52,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:52,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:26:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:26:52,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:52,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550530828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:52,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:52,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:26:52,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564158130] [2023-11-29 01:26:52,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:52,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:26:52,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:52,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:26:52,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:26:53,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:26:53,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 714 transitions, 9857 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:53,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:53,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:26:53,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:00,931 INFO L124 PetriNetUnfolderBase]: 7516/26332 cut-off events. [2023-11-29 01:27:00,931 INFO L125 PetriNetUnfolderBase]: For 124524/126229 co-relation queries the response was YES. [2023-11-29 01:27:01,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94594 conditions, 26332 events. 7516/26332 cut-off events. For 124524/126229 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 305329 event pairs, 609 based on Foata normal form. 333/26228 useless extension candidates. Maximal degree in co-relation 94354. Up to 5161 conditions per place. [2023-11-29 01:27:01,423 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 361 selfloop transitions, 102 changer transitions 1/786 dead transitions. [2023-11-29 01:27:01,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 786 transitions, 11551 flow [2023-11-29 01:27:01,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:27:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:27:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1331 transitions. [2023-11-29 01:27:01,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.825682382133995 [2023-11-29 01:27:01,425 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1331 transitions. [2023-11-29 01:27:01,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1331 transitions. [2023-11-29 01:27:01,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:01,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1331 transitions. [2023-11-29 01:27:01,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 102.38461538461539) internal successors, (1331), 13 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:01,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:01,430 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:01,430 INFO L175 Difference]: Start difference. First operand has 494 places, 714 transitions, 9857 flow. Second operand 13 states and 1331 transitions. [2023-11-29 01:27:01,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 786 transitions, 11551 flow [2023-11-29 01:27:02,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 786 transitions, 11317 flow, removed 73 selfloop flow, removed 6 redundant places. [2023-11-29 01:27:02,523 INFO L231 Difference]: Finished difference. Result has 503 places, 724 transitions, 10091 flow [2023-11-29 01:27:02,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9598, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10091, PETRI_PLACES=503, PETRI_TRANSITIONS=724} [2023-11-29 01:27:02,525 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 382 predicate places. [2023-11-29 01:27:02,525 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 724 transitions, 10091 flow [2023-11-29 01:27:02,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:02,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:02,525 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:02,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 01:27:02,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:02,726 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:27:02,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:02,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1611438211, now seen corresponding path program 22 times [2023-11-29 01:27:02,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:02,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599994323] [2023-11-29 01:27:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:02,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:27:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:03,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599994323] [2023-11-29 01:27:03,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599994323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869518865] [2023-11-29 01:27:03,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:27:03,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:03,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:03,236 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:03,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 01:27:03,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:27:03,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:27:03,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 01:27:03,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:03,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:27:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 01:27:03,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:03,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-11-29 01:27:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:27:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869518865] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:03,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:27:03,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 18] total 26 [2023-11-29 01:27:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642236805] [2023-11-29 01:27:03,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:03,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:27:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:27:03,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:27:04,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2023-11-29 01:27:04,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 724 transitions, 10091 flow. Second operand has 9 states, 9 states have (on average 96.77777777777777) internal successors, (871), 9 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:04,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:04,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2023-11-29 01:27:04,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:12,760 INFO L124 PetriNetUnfolderBase]: 7745/27160 cut-off events. [2023-11-29 01:27:12,760 INFO L125 PetriNetUnfolderBase]: For 126610/128479 co-relation queries the response was YES. [2023-11-29 01:27:13,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97369 conditions, 27160 events. 7745/27160 cut-off events. For 126610/128479 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 315742 event pairs, 564 based on Foata normal form. 456/27194 useless extension candidates. Maximal degree in co-relation 97106. Up to 5423 conditions per place. [2023-11-29 01:27:13,434 INFO L140 encePairwiseOnDemand]: 108/124 looper letters, 284 selfloop transitions, 240 changer transitions 2/849 dead transitions. [2023-11-29 01:27:13,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 849 transitions, 12638 flow [2023-11-29 01:27:13,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:27:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:27:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1345 transitions. [2023-11-29 01:27:13,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8343672456575683 [2023-11-29 01:27:13,436 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1345 transitions. [2023-11-29 01:27:13,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1345 transitions. [2023-11-29 01:27:13,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:13,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1345 transitions. [2023-11-29 01:27:13,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.46153846153847) internal successors, (1345), 13 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:13,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:13,439 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:13,439 INFO L175 Difference]: Start difference. First operand has 503 places, 724 transitions, 10091 flow. Second operand 13 states and 1345 transitions. [2023-11-29 01:27:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 849 transitions, 12638 flow [2023-11-29 01:27:14,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 849 transitions, 12456 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-11-29 01:27:14,328 INFO L231 Difference]: Finished difference. Result has 517 places, 778 transitions, 11526 flow [2023-11-29 01:27:14,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9923, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11526, PETRI_PLACES=517, PETRI_TRANSITIONS=778} [2023-11-29 01:27:14,329 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 396 predicate places. [2023-11-29 01:27:14,329 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 778 transitions, 11526 flow [2023-11-29 01:27:14,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.77777777777777) internal successors, (871), 9 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:14,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:14,330 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:14,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 01:27:14,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:14,530 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:27:14,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash -362300671, now seen corresponding path program 23 times [2023-11-29 01:27:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326706210] [2023-11-29 01:27:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:27:14,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:14,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326706210] [2023-11-29 01:27:14,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326706210] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:14,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817170386] [2023-11-29 01:27:14,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:27:14,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:14,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:14,967 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:14,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 01:27:15,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 01:27:15,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:27:15,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:27:15,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:15,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:27:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:27:15,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:15,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817170386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:15,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:27:15,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:27:15,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560984559] [2023-11-29 01:27:15,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:15,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:27:15,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:27:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:27:15,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:27:15,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 778 transitions, 11526 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:15,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:15,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:27:15,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:23,901 INFO L124 PetriNetUnfolderBase]: 7471/26261 cut-off events. [2023-11-29 01:27:23,902 INFO L125 PetriNetUnfolderBase]: For 129509/131543 co-relation queries the response was YES. [2023-11-29 01:27:24,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95198 conditions, 26261 events. 7471/26261 cut-off events. For 129509/131543 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 303711 event pairs, 589 based on Foata normal form. 385/26225 useless extension candidates. Maximal degree in co-relation 94933. Up to 5222 conditions per place. [2023-11-29 01:27:24,575 INFO L140 encePairwiseOnDemand]: 109/124 looper letters, 385 selfloop transitions, 124 changer transitions 2/833 dead transitions. [2023-11-29 01:27:24,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 833 transitions, 13034 flow [2023-11-29 01:27:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:27:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:27:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1029 transitions. [2023-11-29 01:27:24,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8298387096774194 [2023-11-29 01:27:24,577 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1029 transitions. [2023-11-29 01:27:24,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1029 transitions. [2023-11-29 01:27:24,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:24,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1029 transitions. [2023-11-29 01:27:24,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.9) internal successors, (1029), 10 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:24,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:24,580 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:24,580 INFO L175 Difference]: Start difference. First operand has 517 places, 778 transitions, 11526 flow. Second operand 10 states and 1029 transitions. [2023-11-29 01:27:24,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 833 transitions, 13034 flow [2023-11-29 01:27:25,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 833 transitions, 12417 flow, removed 124 selfloop flow, removed 21 redundant places. [2023-11-29 01:27:25,522 INFO L231 Difference]: Finished difference. Result has 506 places, 776 transitions, 11087 flow [2023-11-29 01:27:25,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10835, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11087, PETRI_PLACES=506, PETRI_TRANSITIONS=776} [2023-11-29 01:27:25,523 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 385 predicate places. [2023-11-29 01:27:25,523 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 776 transitions, 11087 flow [2023-11-29 01:27:25,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:25,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:25,523 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:25,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 01:27:25,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 01:27:25,724 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:27:25,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1202439893, now seen corresponding path program 24 times [2023-11-29 01:27:25,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:25,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250462160] [2023-11-29 01:27:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:25,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:27:26,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:26,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250462160] [2023-11-29 01:27:26,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250462160] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:26,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203911617] [2023-11-29 01:27:26,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:27:26,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:26,215 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:26,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 01:27:26,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 01:27:26,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:27:26,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:27:26,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:26,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:27:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:27:26,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203911617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:26,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:27:26,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 01:27:26,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445219694] [2023-11-29 01:27:26,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:26,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:27:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:26,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:27:26,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:27:27,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:27:27,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 776 transitions, 11087 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:27,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:27,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:27:27,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:35,155 INFO L124 PetriNetUnfolderBase]: 7826/27386 cut-off events. [2023-11-29 01:27:35,156 INFO L125 PetriNetUnfolderBase]: For 126033/128107 co-relation queries the response was YES. [2023-11-29 01:27:35,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98132 conditions, 27386 events. 7826/27386 cut-off events. For 126033/128107 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 319770 event pairs, 619 based on Foata normal form. 505/27431 useless extension candidates. Maximal degree in co-relation 97898. Up to 5481 conditions per place. [2023-11-29 01:27:35,666 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 375 selfloop transitions, 154 changer transitions 0/851 dead transitions. [2023-11-29 01:27:35,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 851 transitions, 12952 flow [2023-11-29 01:27:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:27:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:27:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1325 transitions. [2023-11-29 01:27:35,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8219602977667494 [2023-11-29 01:27:35,668 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1325 transitions. [2023-11-29 01:27:35,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1325 transitions. [2023-11-29 01:27:35,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:35,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1325 transitions. [2023-11-29 01:27:35,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 101.92307692307692) internal successors, (1325), 13 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:35,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:35,671 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:35,671 INFO L175 Difference]: Start difference. First operand has 506 places, 776 transitions, 11087 flow. Second operand 13 states and 1325 transitions. [2023-11-29 01:27:35,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 851 transitions, 12952 flow [2023-11-29 01:27:36,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 851 transitions, 12634 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-11-29 01:27:36,714 INFO L231 Difference]: Finished difference. Result has 516 places, 792 transitions, 11473 flow [2023-11-29 01:27:36,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10809, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11473, PETRI_PLACES=516, PETRI_TRANSITIONS=792} [2023-11-29 01:27:36,715 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 395 predicate places. [2023-11-29 01:27:36,715 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 792 transitions, 11473 flow [2023-11-29 01:27:36,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:36,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:36,716 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:36,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 01:27:36,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 01:27:36,916 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:27:36,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash 268111423, now seen corresponding path program 25 times [2023-11-29 01:27:36,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:36,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331131186] [2023-11-29 01:27:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:27:37,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:37,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331131186] [2023-11-29 01:27:37,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331131186] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:37,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123872897] [2023-11-29 01:27:37,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:27:37,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:37,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:37,327 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:37,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 01:27:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:37,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:27:37,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:37,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:27:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:27:37,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:37,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123872897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:37,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:27:37,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:27:37,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218455275] [2023-11-29 01:27:37,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:37,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:27:37,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:37,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:27:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:27:38,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:27:38,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 792 transitions, 11473 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:38,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:38,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:27:38,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:46,825 INFO L124 PetriNetUnfolderBase]: 8181/28623 cut-off events. [2023-11-29 01:27:46,825 INFO L125 PetriNetUnfolderBase]: For 134117/136347 co-relation queries the response was YES. [2023-11-29 01:27:47,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102577 conditions, 28623 events. 8181/28623 cut-off events. For 134117/136347 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 337167 event pairs, 646 based on Foata normal form. 377/28511 useless extension candidates. Maximal degree in co-relation 102337. Up to 5766 conditions per place. [2023-11-29 01:27:47,375 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 479 selfloop transitions, 79 changer transitions 0/880 dead transitions. [2023-11-29 01:27:47,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 880 transitions, 13944 flow [2023-11-29 01:27:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:27:47,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:27:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1343 transitions. [2023-11-29 01:27:47,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8331265508684863 [2023-11-29 01:27:47,378 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1343 transitions. [2023-11-29 01:27:47,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1343 transitions. [2023-11-29 01:27:47,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:47,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1343 transitions. [2023-11-29 01:27:47,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.3076923076923) internal successors, (1343), 13 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:47,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:47,382 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:47,382 INFO L175 Difference]: Start difference. First operand has 516 places, 792 transitions, 11473 flow. Second operand 13 states and 1343 transitions. [2023-11-29 01:27:47,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 880 transitions, 13944 flow [2023-11-29 01:27:48,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 880 transitions, 13750 flow, removed 43 selfloop flow, removed 4 redundant places. [2023-11-29 01:27:48,445 INFO L231 Difference]: Finished difference. Result has 533 places, 826 transitions, 12339 flow [2023-11-29 01:27:48,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11300, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=721, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12339, PETRI_PLACES=533, PETRI_TRANSITIONS=826} [2023-11-29 01:27:48,446 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 412 predicate places. [2023-11-29 01:27:48,446 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 826 transitions, 12339 flow [2023-11-29 01:27:48,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:48,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:48,446 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:48,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-29 01:27:48,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 01:27:48,647 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:27:48,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:48,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1106557485, now seen corresponding path program 26 times [2023-11-29 01:27:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:48,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896668575] [2023-11-29 01:27:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:48,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:27:48,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:48,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896668575] [2023-11-29 01:27:48,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896668575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:48,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860865515] [2023-11-29 01:27:48,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:27:48,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:48,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:48,969 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:48,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 01:27:49,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:27:49,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:27:49,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:27:49,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:49,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:27:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:27:49,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:49,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860865515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:49,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:27:49,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:27:49,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318936162] [2023-11-29 01:27:49,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:49,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:27:49,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:49,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:27:49,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:27:49,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:27:49,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 826 transitions, 12339 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:49,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:49,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:27:49,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:58,161 INFO L124 PetriNetUnfolderBase]: 7909/27775 cut-off events. [2023-11-29 01:27:58,161 INFO L125 PetriNetUnfolderBase]: For 135400/137668 co-relation queries the response was YES. [2023-11-29 01:27:58,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99906 conditions, 27775 events. 7909/27775 cut-off events. For 135400/137668 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 326927 event pairs, 628 based on Foata normal form. 543/27833 useless extension candidates. Maximal degree in co-relation 99675. Up to 5599 conditions per place. [2023-11-29 01:27:58,725 INFO L140 encePairwiseOnDemand]: 109/124 looper letters, 402 selfloop transitions, 152 changer transitions 0/876 dead transitions. [2023-11-29 01:27:58,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 876 transitions, 13945 flow [2023-11-29 01:27:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:27:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:27:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1029 transitions. [2023-11-29 01:27:58,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8298387096774194 [2023-11-29 01:27:58,728 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1029 transitions. [2023-11-29 01:27:58,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1029 transitions. [2023-11-29 01:27:58,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:58,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1029 transitions. [2023-11-29 01:27:58,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.9) internal successors, (1029), 10 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:58,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:58,730 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:58,730 INFO L175 Difference]: Start difference. First operand has 533 places, 826 transitions, 12339 flow. Second operand 10 states and 1029 transitions. [2023-11-29 01:27:58,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 876 transitions, 13945 flow [2023-11-29 01:27:59,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 876 transitions, 13583 flow, removed 147 selfloop flow, removed 4 redundant places. [2023-11-29 01:27:59,870 INFO L231 Difference]: Finished difference. Result has 537 places, 823 transitions, 12245 flow [2023-11-29 01:27:59,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11941, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12245, PETRI_PLACES=537, PETRI_TRANSITIONS=823} [2023-11-29 01:27:59,871 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 416 predicate places. [2023-11-29 01:27:59,871 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 823 transitions, 12245 flow [2023-11-29 01:27:59,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:59,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:59,871 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:59,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 01:28:00,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 01:28:00,072 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:28:00,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash 179190259, now seen corresponding path program 27 times [2023-11-29 01:28:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:00,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775831851] [2023-11-29 01:28:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:00,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:28:00,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:00,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775831851] [2023-11-29 01:28:00,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775831851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:28:00,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132018597] [2023-11-29 01:28:00,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:28:00,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:00,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:00,517 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:00,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 01:28:00,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 01:28:00,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:00,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:28:00,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:00,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:28:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:28:00,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:00,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132018597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:00,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:28:00,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:28:00,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711827296] [2023-11-29 01:28:00,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:00,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:28:00,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:00,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:28:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:28:01,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:28:01,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 823 transitions, 12245 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:01,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:28:01,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:28:01,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:28:10,087 INFO L124 PetriNetUnfolderBase]: 8269/28996 cut-off events. [2023-11-29 01:28:10,087 INFO L125 PetriNetUnfolderBase]: For 139266/141559 co-relation queries the response was YES. [2023-11-29 01:28:10,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103813 conditions, 28996 events. 8269/28996 cut-off events. For 139266/141559 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 344341 event pairs, 656 based on Foata normal form. 511/28997 useless extension candidates. Maximal degree in co-relation 103581. Up to 5886 conditions per place. [2023-11-29 01:28:10,645 INFO L140 encePairwiseOnDemand]: 107/124 looper letters, 439 selfloop transitions, 132 changer transitions 0/893 dead transitions. [2023-11-29 01:28:10,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 893 transitions, 14265 flow [2023-11-29 01:28:10,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:28:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:28:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1332 transitions. [2023-11-29 01:28:10,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.826302729528536 [2023-11-29 01:28:10,647 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1332 transitions. [2023-11-29 01:28:10,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1332 transitions. [2023-11-29 01:28:10,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:28:10,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1332 transitions. [2023-11-29 01:28:10,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 102.46153846153847) internal successors, (1332), 13 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:10,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:10,650 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:10,651 INFO L175 Difference]: Start difference. First operand has 537 places, 823 transitions, 12245 flow. Second operand 13 states and 1332 transitions. [2023-11-29 01:28:10,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 893 transitions, 14265 flow [2023-11-29 01:28:11,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 893 transitions, 13961 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-29 01:28:11,757 INFO L231 Difference]: Finished difference. Result has 550 places, 849 transitions, 12917 flow [2023-11-29 01:28:11,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11959, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12917, PETRI_PLACES=550, PETRI_TRANSITIONS=849} [2023-11-29 01:28:11,758 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 429 predicate places. [2023-11-29 01:28:11,759 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 849 transitions, 12917 flow [2023-11-29 01:28:11,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:11,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:28:11,760 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:11,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 01:28:11,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:11,960 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:28:11,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:11,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1400281879, now seen corresponding path program 28 times [2023-11-29 01:28:11,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:11,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732143394] [2023-11-29 01:28:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:11,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:28:12,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:12,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732143394] [2023-11-29 01:28:12,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732143394] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:28:12,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953119152] [2023-11-29 01:28:12,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:28:12,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:12,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:12,550 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:12,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 01:28:12,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:28:12,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:12,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 01:28:12,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:13,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:28:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 01:28:13,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:13,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-11-29 01:28:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:28:13,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953119152] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:28:13,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:13,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 18] total 26 [2023-11-29 01:28:13,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362651656] [2023-11-29 01:28:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:13,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:28:13,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:13,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:28:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:28:13,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2023-11-29 01:28:13,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 849 transitions, 12917 flow. Second operand has 9 states, 9 states have (on average 96.77777777777777) internal successors, (871), 9 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:13,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:28:13,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2023-11-29 01:28:13,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:28:22,651 INFO L124 PetriNetUnfolderBase]: 8534/29891 cut-off events. [2023-11-29 01:28:22,652 INFO L125 PetriNetUnfolderBase]: For 150929/153400 co-relation queries the response was YES. [2023-11-29 01:28:23,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107899 conditions, 29891 events. 8534/29891 cut-off events. For 150929/153400 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 355810 event pairs, 619 based on Foata normal form. 629/30009 useless extension candidates. Maximal degree in co-relation 107620. Up to 6036 conditions per place. [2023-11-29 01:28:23,305 INFO L140 encePairwiseOnDemand]: 108/124 looper letters, 345 selfloop transitions, 251 changer transitions 0/919 dead transitions. [2023-11-29 01:28:23,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 919 transitions, 14979 flow [2023-11-29 01:28:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:28:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 01:28:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1458 transitions. [2023-11-29 01:28:23,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8398617511520737 [2023-11-29 01:28:23,308 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1458 transitions. [2023-11-29 01:28:23,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1458 transitions. [2023-11-29 01:28:23,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:28:23,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1458 transitions. [2023-11-29 01:28:23,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 104.14285714285714) internal successors, (1458), 14 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:23,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:23,312 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:23,312 INFO L175 Difference]: Start difference. First operand has 550 places, 849 transitions, 12917 flow. Second operand 14 states and 1458 transitions. [2023-11-29 01:28:23,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 919 transitions, 14979 flow [2023-11-29 01:28:24,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 919 transitions, 14607 flow, removed 169 selfloop flow, removed 2 redundant places. [2023-11-29 01:28:24,626 INFO L231 Difference]: Finished difference. Result has 565 places, 865 transitions, 13526 flow [2023-11-29 01:28:24,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12657, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13526, PETRI_PLACES=565, PETRI_TRANSITIONS=865} [2023-11-29 01:28:24,627 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 444 predicate places. [2023-11-29 01:28:24,627 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 865 transitions, 13526 flow [2023-11-29 01:28:24,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.77777777777777) internal successors, (871), 9 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:24,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:28:24,627 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:24,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 01:28:24,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 01:28:24,828 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:28:24,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1590688623, now seen corresponding path program 29 times [2023-11-29 01:28:24,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:24,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323447259] [2023-11-29 01:28:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:24,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:28:25,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:25,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323447259] [2023-11-29 01:28:25,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323447259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:28:25,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835360456] [2023-11-29 01:28:25,163 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:28:25,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:25,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:25,164 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:25,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 01:28:25,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 01:28:25,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:25,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:28:25,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:25,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:28:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:28:25,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:25,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835360456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:25,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:28:25,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:28:25,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908836655] [2023-11-29 01:28:25,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:25,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:28:25,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:25,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:28:25,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:28:25,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:28:25,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 865 transitions, 13526 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:25,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:28:25,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:28:25,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:28:34,899 INFO L124 PetriNetUnfolderBase]: 8576/29983 cut-off events. [2023-11-29 01:28:34,900 INFO L125 PetriNetUnfolderBase]: For 155192/157634 co-relation queries the response was YES. [2023-11-29 01:28:35,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108841 conditions, 29983 events. 8576/29983 cut-off events. For 155192/157634 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 356784 event pairs, 668 based on Foata normal form. 522/29985 useless extension candidates. Maximal degree in co-relation 108551. Up to 6078 conditions per place. [2023-11-29 01:28:35,722 INFO L140 encePairwiseOnDemand]: 108/124 looper letters, 473 selfloop transitions, 115 changer transitions 0/910 dead transitions. [2023-11-29 01:28:35,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 910 transitions, 15139 flow [2023-11-29 01:28:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:28:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:28:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1035 transitions. [2023-11-29 01:28:35,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8346774193548387 [2023-11-29 01:28:35,724 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1035 transitions. [2023-11-29 01:28:35,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1035 transitions. [2023-11-29 01:28:35,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:28:35,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1035 transitions. [2023-11-29 01:28:35,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.5) internal successors, (1035), 10 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:35,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:35,726 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:35,726 INFO L175 Difference]: Start difference. First operand has 565 places, 865 transitions, 13526 flow. Second operand 10 states and 1035 transitions. [2023-11-29 01:28:35,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 910 transitions, 15139 flow [2023-11-29 01:28:36,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 910 transitions, 14781 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-11-29 01:28:36,868 INFO L231 Difference]: Finished difference. Result has 571 places, 872 transitions, 13600 flow [2023-11-29 01:28:36,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=13177, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=752, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13600, PETRI_PLACES=571, PETRI_TRANSITIONS=872} [2023-11-29 01:28:36,869 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 450 predicate places. [2023-11-29 01:28:36,869 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 872 transitions, 13600 flow [2023-11-29 01:28:36,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:36,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:28:36,870 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:36,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 01:28:37,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 01:28:37,070 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 01:28:37,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:37,070 INFO L85 PathProgramCache]: Analyzing trace with hash 929538289, now seen corresponding path program 30 times [2023-11-29 01:28:37,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:37,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125558672] [2023-11-29 01:28:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:37,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 01:28:37,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:37,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125558672] [2023-11-29 01:28:37,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125558672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:28:37,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873195583] [2023-11-29 01:28:37,387 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:28:37,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:37,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:37,388 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:37,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1311b43-f778-48df-94e9-e4e87539499c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 01:28:37,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 01:28:37,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:37,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:28:37,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:37,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:28:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 01:28:37,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:37,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873195583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:37,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:28:37,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 01:28:37,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264593644] [2023-11-29 01:28:37,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:37,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:28:37,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:37,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:28:37,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:28:38,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2023-11-29 01:28:38,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 872 transitions, 13600 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:28:38,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:28:38,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2023-11-29 01:28:38,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand