./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/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_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/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_28bac836-75e6-4566-8886-b1b748191ab8/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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:01:42,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:01:42,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 05:01:42,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:01:42,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:01:42,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:01:42,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:01:42,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:01:42,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:01:42,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:01:42,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:01:42,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:01:42,585 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:01:42,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:01:42,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:01:42,587 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:01:42,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:01:42,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:01:42,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:01:42,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:01:42,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:01:42,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:01:42,590 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 05:01:42,591 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:01:42,591 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:01:42,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:01:42,592 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:01:42,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:01:42,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:01:42,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:01:42,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:01:42,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:01:42,595 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:01:42,595 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:01:42,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:01:42,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:01:42,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:01:42,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:01:42,597 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:01:42,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:01:42,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:01:42,597 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_28bac836-75e6-4566-8886-b1b748191ab8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2023-11-29 05:01:42,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:01:42,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:01:42,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:01:42,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:01:42,885 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:01:42,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-11-29 05:01:45,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:01:45,970 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:01:45,971 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-11-29 05:01:45,990 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/data/f5feb49c2/1d3aa31be1e440ed85a7f65774e1ea94/FLAGb07e5c4d0 [2023-11-29 05:01:46,005 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/data/f5feb49c2/1d3aa31be1e440ed85a7f65774e1ea94 [2023-11-29 05:01:46,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:01:46,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:01:46,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:01:46,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:01:46,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:01:46,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b20be95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46, skipping insertion in model container [2023-11-29 05:01:46,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,082 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:01:46,584 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 05:01:46,585 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 05:01:46,587 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 05:01:46,588 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 05:01:46,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:01:46,640 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:01:46,684 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 05:01:46,685 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 05:01:46,686 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 05:01:46,687 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 05:01:46,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:01:46,767 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:01:46,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46 WrapperNode [2023-11-29 05:01:46,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:01:46,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:01:46,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:01:46,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:01:46,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,836 INFO L138 Inliner]: procedures = 274, calls = 39, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 264 [2023-11-29 05:01:46,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:01:46,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:01:46,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:01:46,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:01:46,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:01:46,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:01:46,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:01:46,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:01:46,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (1/1) ... [2023-11-29 05:01:46,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:01:46,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:46,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:01:46,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:01:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-29 05:01:46,957 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-29 05:01:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:01:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-29 05:01:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:01:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 05:01:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 05:01:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 05:01:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 05:01:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:01:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:01:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-29 05:01:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:01:46,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:01:46,961 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 05:01:47,131 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:01:47,133 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:01:47,700 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:01:47,728 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:01:47,729 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 05:01:47,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:01:47 BoogieIcfgContainer [2023-11-29 05:01:47,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:01:47,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:01:47,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:01:47,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:01:47,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:01:46" (1/3) ... [2023-11-29 05:01:47,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e72fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:01:47, skipping insertion in model container [2023-11-29 05:01:47,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:46" (2/3) ... [2023-11-29 05:01:47,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e72fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:01:47, skipping insertion in model container [2023-11-29 05:01:47,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:01:47" (3/3) ... [2023-11-29 05:01:47,742 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2023-11-29 05:01:47,751 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:01:47,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:01:47,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-29 05:01:47,762 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:01:47,889 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:01:47,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 368 places, 378 transitions, 764 flow [2023-11-29 05:01:48,082 INFO L124 PetriNetUnfolderBase]: 17/376 cut-off events. [2023-11-29 05:01:48,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:01:48,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 376 events. 17/376 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 820 event pairs, 0 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 297. Up to 2 conditions per place. [2023-11-29 05:01:48,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 368 places, 378 transitions, 764 flow [2023-11-29 05:01:48,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 376 transitions, 758 flow [2023-11-29 05:01:48,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:01:48,125 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;@240187d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:01:48,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-29 05:01:48,137 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:01:48,138 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2023-11-29 05:01:48,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:01:48,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:48,139 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] [2023-11-29 05:01:48,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:01:48,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1973742283, now seen corresponding path program 1 times [2023-11-29 05:01:48,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:48,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422826966] [2023-11-29 05:01:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:48,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:48,825 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 05:01:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:48,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422826966] [2023-11-29 05:01:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422826966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:48,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:48,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:01:48,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225504748] [2023-11-29 05:01:48,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:48,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:01:48,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:48,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:01:48,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:01:49,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 378 [2023-11-29 05:01:49,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 376 transitions, 758 flow. Second operand has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 05:01:49,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:49,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 378 [2023-11-29 05:01:49,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:50,247 INFO L124 PetriNetUnfolderBase]: 450/1850 cut-off events. [2023-11-29 05:01:50,247 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-29 05:01:50,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2757 conditions, 1850 events. 450/1850 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11612 event pairs, 342 based on Foata normal form. 154/1792 useless extension candidates. Maximal degree in co-relation 2484. Up to 854 conditions per place. [2023-11-29 05:01:50,271 INFO L140 encePairwiseOnDemand]: 356/378 looper letters, 80 selfloop transitions, 10 changer transitions 2/364 dead transitions. [2023-11-29 05:01:50,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 364 transitions, 914 flow [2023-11-29 05:01:50,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:01:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:01:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1758 transitions. [2023-11-29 05:01:50,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7751322751322751 [2023-11-29 05:01:50,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1758 transitions. [2023-11-29 05:01:50,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1758 transitions. [2023-11-29 05:01:50,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:50,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1758 transitions. [2023-11-29 05:01:50,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states 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 05:01:50,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:01:50,327 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:01:50,329 INFO L175 Difference]: Start difference. First operand has 366 places, 376 transitions, 758 flow. Second operand 6 states and 1758 transitions. [2023-11-29 05:01:50,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 364 transitions, 914 flow [2023-11-29 05:01:50,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 364 transitions, 912 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:01:50,347 INFO L231 Difference]: Finished difference. Result has 367 places, 362 transitions, 748 flow [2023-11-29 05:01:50,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=748, PETRI_PLACES=367, PETRI_TRANSITIONS=362} [2023-11-29 05:01:50,355 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 1 predicate places. [2023-11-29 05:01:50,355 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 362 transitions, 748 flow [2023-11-29 05:01:50,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 05:01:50,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:50,357 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] [2023-11-29 05:01:50,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:01:50,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:01:50,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1311328081, now seen corresponding path program 1 times [2023-11-29 05:01:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:50,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841566438] [2023-11-29 05:01:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:50,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:50,758 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 05:01:50,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:50,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841566438] [2023-11-29 05:01:50,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841566438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:50,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:50,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:01:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733743255] [2023-11-29 05:01:50,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:50,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:01:50,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:50,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:01:50,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:01:51,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 378 [2023-11-29 05:01:51,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 362 transitions, 748 flow. Second operand has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 05:01:51,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:51,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 378 [2023-11-29 05:01:51,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:51,765 INFO L124 PetriNetUnfolderBase]: 450/1846 cut-off events. [2023-11-29 05:01:51,766 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:01:51,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2762 conditions, 1846 events. 450/1846 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11616 event pairs, 342 based on Foata normal form. 0/1638 useless extension candidates. Maximal degree in co-relation 2587. Up to 854 conditions per place. [2023-11-29 05:01:51,786 INFO L140 encePairwiseOnDemand]: 366/378 looper letters, 80 selfloop transitions, 10 changer transitions 0/360 dead transitions. [2023-11-29 05:01:51,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 360 transitions, 924 flow [2023-11-29 05:01:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:01:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:01:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1748 transitions. [2023-11-29 05:01:51,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7707231040564374 [2023-11-29 05:01:51,794 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1748 transitions. [2023-11-29 05:01:51,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1748 transitions. [2023-11-29 05:01:51,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:51,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1748 transitions. [2023-11-29 05:01:51,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 291.3333333333333) internal successors, (1748), 6 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states 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 05:01:51,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:01:51,811 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:01:51,811 INFO L175 Difference]: Start difference. First operand has 367 places, 362 transitions, 748 flow. Second operand 6 states and 1748 transitions. [2023-11-29 05:01:51,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 360 transitions, 924 flow [2023-11-29 05:01:51,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 360 transitions, 904 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:01:51,822 INFO L231 Difference]: Finished difference. Result has 363 places, 360 transitions, 744 flow [2023-11-29 05:01:51,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=744, PETRI_PLACES=363, PETRI_TRANSITIONS=360} [2023-11-29 05:01:51,824 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, -3 predicate places. [2023-11-29 05:01:51,824 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 360 transitions, 744 flow [2023-11-29 05:01:51,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 05:01:51,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:51,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:51,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:01:51,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:01:51,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2024869215, now seen corresponding path program 1 times [2023-11-29 05:01:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:51,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293265975] [2023-11-29 05:01:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:51,880 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 05:01:51,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:51,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293265975] [2023-11-29 05:01:51,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293265975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:51,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:51,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:01:51,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117823846] [2023-11-29 05:01:51,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:51,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:51,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:51,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:51,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:51,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 378 [2023-11-29 05:01:51,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 360 transitions, 744 flow. Second operand has 3 states, 3 states have (on average 357.3333333333333) internal successors, (1072), 3 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states 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 05:01:51,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:51,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 378 [2023-11-29 05:01:51,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:52,026 INFO L124 PetriNetUnfolderBase]: 30/671 cut-off events. [2023-11-29 05:01:52,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:01:52,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 671 events. 30/671 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2723 event pairs, 18 based on Foata normal form. 1/618 useless extension candidates. Maximal degree in co-relation 507. Up to 45 conditions per place. [2023-11-29 05:01:52,032 INFO L140 encePairwiseOnDemand]: 375/378 looper letters, 11 selfloop transitions, 2 changer transitions 0/361 dead transitions. [2023-11-29 05:01:52,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 361 transitions, 772 flow [2023-11-29 05:01:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:01:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2023-11-29 05:01:52,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9541446208112875 [2023-11-29 05:01:52,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1082 transitions. [2023-11-29 05:01:52,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1082 transitions. [2023-11-29 05:01:52,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:52,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1082 transitions. [2023-11-29 05:01:52,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states 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 05:01:52,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 05:01:52,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 05:01:52,048 INFO L175 Difference]: Start difference. First operand has 363 places, 360 transitions, 744 flow. Second operand 3 states and 1082 transitions. [2023-11-29 05:01:52,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 361 transitions, 772 flow [2023-11-29 05:01:52,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 361 transitions, 752 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:01:52,059 INFO L231 Difference]: Finished difference. Result has 361 places, 361 transitions, 736 flow [2023-11-29 05:01:52,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=736, PETRI_PLACES=361, PETRI_TRANSITIONS=361} [2023-11-29 05:01:52,061 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, -5 predicate places. [2023-11-29 05:01:52,061 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 361 transitions, 736 flow [2023-11-29 05:01:52,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 357.3333333333333) internal successors, (1072), 3 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states 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 05:01:52,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:52,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:52,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:01:52,063 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:01:52,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2065003873, now seen corresponding path program 1 times [2023-11-29 05:01:52,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:52,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163775802] [2023-11-29 05:01:52,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:52,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:52,093 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:01:52,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812694544] [2023-11-29 05:01:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:52,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:52,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:52,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:52,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:01:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:52,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:01:52,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:52,334 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 05:01:52,360 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 05:01:52,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:01:52,397 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 05:01:52,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:01:52,440 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 05:01:52,468 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 05:01:52,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:01:52,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:52,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163775802] [2023-11-29 05:01:52,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:01:52,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812694544] [2023-11-29 05:01:52,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812694544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:52,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:52,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:01:52,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264329849] [2023-11-29 05:01:52,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:52,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:01:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:01:52,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:01:53,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 378 [2023-11-29 05:01:53,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 361 transitions, 736 flow. Second operand has 8 states, 8 states have (on average 275.25) internal successors, (2202), 8 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states 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 05:01:53,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:53,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 378 [2023-11-29 05:01:53,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:53,402 INFO L124 PetriNetUnfolderBase]: 451/1969 cut-off events. [2023-11-29 05:01:53,403 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:01:53,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2933 conditions, 1969 events. 451/1969 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12204 event pairs, 342 based on Foata normal form. 0/1757 useless extension candidates. Maximal degree in co-relation 2738. Up to 880 conditions per place. [2023-11-29 05:01:53,416 INFO L140 encePairwiseOnDemand]: 368/378 looper letters, 85 selfloop transitions, 9 changer transitions 0/360 dead transitions. [2023-11-29 05:01:53,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 360 transitions, 922 flow [2023-11-29 05:01:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:01:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:01:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2552 transitions. [2023-11-29 05:01:53,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7501469723691946 [2023-11-29 05:01:53,425 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2552 transitions. [2023-11-29 05:01:53,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2552 transitions. [2023-11-29 05:01:53,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:53,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2552 transitions. [2023-11-29 05:01:53,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 283.55555555555554) internal successors, (2552), 9 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 05:01:53,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 378.0) internal successors, (3780), 10 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states 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 05:01:53,443 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 378.0) internal successors, (3780), 10 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states 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 05:01:53,443 INFO L175 Difference]: Start difference. First operand has 361 places, 361 transitions, 736 flow. Second operand 9 states and 2552 transitions. [2023-11-29 05:01:53,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 360 transitions, 922 flow [2023-11-29 05:01:53,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 360 transitions, 920 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:01:53,451 INFO L231 Difference]: Finished difference. Result has 367 places, 360 transitions, 750 flow [2023-11-29 05:01:53,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=367, PETRI_TRANSITIONS=360} [2023-11-29 05:01:53,452 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 1 predicate places. [2023-11-29 05:01:53,452 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 360 transitions, 750 flow [2023-11-29 05:01:53,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 275.25) internal successors, (2202), 8 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states 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 05:01:53,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:53,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:53,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:01:53,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:53,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:01:53,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash -543218848, now seen corresponding path program 1 times [2023-11-29 05:01:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:53,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010926286] [2023-11-29 05:01:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:53,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:53,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:53,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010926286] [2023-11-29 05:01:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010926286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:53,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:53,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:01:53,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431135140] [2023-11-29 05:01:53,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:53,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:53,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:53,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 378 [2023-11-29 05:01:53,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 360 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 357.3333333333333) internal successors, (1072), 3 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states 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 05:01:53,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:53,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 378 [2023-11-29 05:01:53,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:53,874 INFO L124 PetriNetUnfolderBase]: 30/859 cut-off events. [2023-11-29 05:01:53,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:01:53,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 859 events. 30/859 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2736 event pairs, 18 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 552. Up to 49 conditions per place. [2023-11-29 05:01:53,878 INFO L140 encePairwiseOnDemand]: 375/378 looper letters, 11 selfloop transitions, 2 changer transitions 0/361 dead transitions. [2023-11-29 05:01:53,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 361 transitions, 778 flow [2023-11-29 05:01:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:01:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2023-11-29 05:01:53,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9541446208112875 [2023-11-29 05:01:53,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1082 transitions. [2023-11-29 05:01:53,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1082 transitions. [2023-11-29 05:01:53,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:53,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1082 transitions. [2023-11-29 05:01:53,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states 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 05:01:53,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 05:01:53,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 05:01:53,889 INFO L175 Difference]: Start difference. First operand has 367 places, 360 transitions, 750 flow. Second operand 3 states and 1082 transitions. [2023-11-29 05:01:53,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 361 transitions, 778 flow [2023-11-29 05:01:53,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 361 transitions, 760 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 05:01:53,896 INFO L231 Difference]: Finished difference. Result has 362 places, 361 transitions, 744 flow [2023-11-29 05:01:53,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=744, PETRI_PLACES=362, PETRI_TRANSITIONS=361} [2023-11-29 05:01:53,898 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, -4 predicate places. [2023-11-29 05:01:53,898 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 361 transitions, 744 flow [2023-11-29 05:01:53,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 357.3333333333333) internal successors, (1072), 3 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states 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 05:01:53,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:53,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:53,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:01:53,899 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:01:53,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1567072165, now seen corresponding path program 1 times [2023-11-29 05:01:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:53,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334394295] [2023-11-29 05:01:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:53,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:01:53,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044248186] [2023-11-29 05:01:53,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:53,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:53,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:53,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:53,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:01:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:54,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:01:54,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:54,144 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 05:01:54,155 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 05:01:54,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:01:54,177 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 05:01:54,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:01:54,209 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 05:01:54,236 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 05:01:54,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:01:54,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:54,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334394295] [2023-11-29 05:01:54,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:01:54,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044248186] [2023-11-29 05:01:54,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044248186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:54,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:54,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:01:54,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621646574] [2023-11-29 05:01:54,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:54,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:01:54,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:54,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:01:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:01:55,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 378 [2023-11-29 05:01:55,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 361 transitions, 744 flow. Second operand has 6 states, 6 states have (on average 312.5) internal successors, (1875), 6 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states 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 05:01:55,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:55,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 378 [2023-11-29 05:01:55,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:55,473 INFO L124 PetriNetUnfolderBase]: 76/1175 cut-off events. [2023-11-29 05:01:55,473 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 05:01:55,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1492 conditions, 1175 events. 76/1175 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4835 event pairs, 42 based on Foata normal form. 0/1079 useless extension candidates. Maximal degree in co-relation 1030. Up to 263 conditions per place. [2023-11-29 05:01:55,482 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 54 selfloop transitions, 5 changer transitions 0/360 dead transitions. [2023-11-29 05:01:55,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 360 transitions, 860 flow [2023-11-29 05:01:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:01:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:01:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1908 transitions. [2023-11-29 05:01:55,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8412698412698413 [2023-11-29 05:01:55,490 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1908 transitions. [2023-11-29 05:01:55,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1908 transitions. [2023-11-29 05:01:55,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:55,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1908 transitions. [2023-11-29 05:01:55,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states 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 05:01:55,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:01:55,505 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:01:55,505 INFO L175 Difference]: Start difference. First operand has 362 places, 361 transitions, 744 flow. Second operand 6 states and 1908 transitions. [2023-11-29 05:01:55,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 360 transitions, 860 flow [2023-11-29 05:01:55,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 360 transitions, 858 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:01:55,514 INFO L231 Difference]: Finished difference. Result has 365 places, 360 transitions, 750 flow [2023-11-29 05:01:55,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=365, PETRI_TRANSITIONS=360} [2023-11-29 05:01:55,516 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, -1 predicate places. [2023-11-29 05:01:55,516 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 360 transitions, 750 flow [2023-11-29 05:01:55,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 312.5) internal successors, (1875), 6 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states 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 05:01:55,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:55,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:55,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:01:55,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:55,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:01:55,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:55,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2125513975, now seen corresponding path program 1 times [2023-11-29 05:01:55,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:55,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875275588] [2023-11-29 05:01:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:55,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:55,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:01:55,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054393403] [2023-11-29 05:01:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:55,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:55,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:55,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:55,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:01:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:55,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:01:55,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:55,966 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 05:01:55,976 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 23 treesize of output 22 [2023-11-29 05:01:55,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:01:55,996 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 32 treesize of output 34 [2023-11-29 05:01:56,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:01:56,026 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 41 treesize of output 46 [2023-11-29 05:01:56,052 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 05:01:56,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:01:56,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:56,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875275588] [2023-11-29 05:01:56,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:01:56,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054393403] [2023-11-29 05:01:56,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054393403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:56,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:56,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:01:56,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180612394] [2023-11-29 05:01:56,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:56,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:01:56,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:56,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:01:56,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:01:56,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 378 [2023-11-29 05:01:56,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 360 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 280.3333333333333) internal successors, (1682), 6 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states 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 05:01:56,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:56,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 378 [2023-11-29 05:01:56,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:57,092 INFO L124 PetriNetUnfolderBase]: 451/2151 cut-off events. [2023-11-29 05:01:57,092 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 05:01:57,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3215 conditions, 2151 events. 451/2151 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12412 event pairs, 342 based on Foata normal form. 0/1939 useless extension candidates. Maximal degree in co-relation 2779. Up to 968 conditions per place. [2023-11-29 05:01:57,113 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 87 selfloop transitions, 5 changer transitions 0/359 dead transitions. [2023-11-29 05:01:57,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 359 transitions, 932 flow [2023-11-29 05:01:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:01:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:01:57,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1743 transitions. [2023-11-29 05:01:57,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7685185185185185 [2023-11-29 05:01:57,120 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1743 transitions. [2023-11-29 05:01:57,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1743 transitions. [2023-11-29 05:01:57,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:57,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1743 transitions. [2023-11-29 05:01:57,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.5) internal successors, (1743), 6 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states 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 05:01:57,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:01:57,135 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:01:57,135 INFO L175 Difference]: Start difference. First operand has 365 places, 360 transitions, 750 flow. Second operand 6 states and 1743 transitions. [2023-11-29 05:01:57,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 359 transitions, 932 flow [2023-11-29 05:01:57,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 359 transitions, 922 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:01:57,144 INFO L231 Difference]: Finished difference. Result has 364 places, 359 transitions, 748 flow [2023-11-29 05:01:57,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=748, PETRI_PLACES=364, PETRI_TRANSITIONS=359} [2023-11-29 05:01:57,146 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, -2 predicate places. [2023-11-29 05:01:57,146 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 359 transitions, 748 flow [2023-11-29 05:01:57,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.3333333333333) internal successors, (1682), 6 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states 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 05:01:57,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:57,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:57,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:01:57,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 05:01:57,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:01:57,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash -434301998, now seen corresponding path program 1 times [2023-11-29 05:01:57,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:57,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066952203] [2023-11-29 05:01:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:57,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:57,403 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:01:57,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485137924] [2023-11-29 05:01:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:57,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:57,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:57,405 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:57,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:01:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:57,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:01:57,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:57,634 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 05:01:57,644 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 05:01:57,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:01:57,663 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 05:01:57,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:01:57,695 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 05:01:57,718 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 05:01:57,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:01:57,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:57,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066952203] [2023-11-29 05:01:57,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:01:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485137924] [2023-11-29 05:01:57,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485137924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:57,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:57,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:01:57,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229387940] [2023-11-29 05:01:57,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:57,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:01:57,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:57,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:01:57,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:01:58,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 378 [2023-11-29 05:01:58,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 359 transitions, 748 flow. Second operand has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states 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 05:01:58,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:58,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 378 [2023-11-29 05:01:58,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:58,565 INFO L124 PetriNetUnfolderBase]: 451/2147 cut-off events. [2023-11-29 05:01:58,565 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 05:01:58,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3195 conditions, 2147 events. 451/2147 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12437 event pairs, 342 based on Foata normal form. 0/1939 useless extension candidates. Maximal degree in co-relation 2795. Up to 952 conditions per place. [2023-11-29 05:01:58,580 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 83 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2023-11-29 05:01:58,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 358 transitions, 922 flow [2023-11-29 05:01:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:01:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:01:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1763 transitions. [2023-11-29 05:01:58,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.777336860670194 [2023-11-29 05:01:58,587 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1763 transitions. [2023-11-29 05:01:58,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1763 transitions. [2023-11-29 05:01:58,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:58,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1763 transitions. [2023-11-29 05:01:58,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.8333333333333) internal successors, (1763), 6 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states 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 05:01:58,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:01:58,599 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:01:58,599 INFO L175 Difference]: Start difference. First operand has 364 places, 359 transitions, 748 flow. Second operand 6 states and 1763 transitions. [2023-11-29 05:01:58,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 358 transitions, 922 flow [2023-11-29 05:01:58,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 358 transitions, 912 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:01:58,608 INFO L231 Difference]: Finished difference. Result has 363 places, 358 transitions, 746 flow [2023-11-29 05:01:58,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=746, PETRI_PLACES=363, PETRI_TRANSITIONS=358} [2023-11-29 05:01:58,610 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, -3 predicate places. [2023-11-29 05:01:58,610 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 358 transitions, 746 flow [2023-11-29 05:01:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states 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 05:01:58,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:58,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:58,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:01:58,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:58,815 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:01:58,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:58,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1945071863, now seen corresponding path program 1 times [2023-11-29 05:01:58,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:58,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664721504] [2023-11-29 05:01:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:58,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:58,850 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:01:58,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065890908] [2023-11-29 05:01:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:58,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:58,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:58,853 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:58,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:01:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:59,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 05:01:59,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:59,238 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 05:01:59,265 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 05:01:59,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:01:59,298 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 05:01:59,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:01:59,338 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 05:01:59,371 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 05:01:59,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:01:59,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:59,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664721504] [2023-11-29 05:01:59,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:01:59,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065890908] [2023-11-29 05:01:59,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065890908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:59,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:59,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 05:01:59,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751012347] [2023-11-29 05:01:59,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:59,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:01:59,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:01:59,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:02:00,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 378 [2023-11-29 05:02:00,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 358 transitions, 746 flow. Second operand has 13 states, 13 states have (on average 265.9230769230769) internal successors, (3457), 13 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states 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 05:02:00,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:02:00,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 378 [2023-11-29 05:02:00,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:01,460 INFO L124 PetriNetUnfolderBase]: 1238/3974 cut-off events. [2023-11-29 05:02:01,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:02:01,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6216 conditions, 3974 events. 1238/3974 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 30300 event pairs, 1026 based on Foata normal form. 0/3584 useless extension candidates. Maximal degree in co-relation 5804. Up to 1970 conditions per place. [2023-11-29 05:02:01,480 INFO L140 encePairwiseOnDemand]: 358/378 looper letters, 97 selfloop transitions, 19 changer transitions 0/368 dead transitions. [2023-11-29 05:02:01,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 368 transitions, 998 flow [2023-11-29 05:02:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:02:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 05:02:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4309 transitions. [2023-11-29 05:02:01,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7124669312169312 [2023-11-29 05:02:01,495 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4309 transitions. [2023-11-29 05:02:01,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4309 transitions. [2023-11-29 05:02:01,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:02:01,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4309 transitions. [2023-11-29 05:02:01,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 269.3125) internal successors, (4309), 16 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states 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 05:02:01,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 378.0) internal successors, (6426), 17 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states 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 05:02:01,521 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 378.0) internal successors, (6426), 17 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states 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 05:02:01,521 INFO L175 Difference]: Start difference. First operand has 363 places, 358 transitions, 746 flow. Second operand 16 states and 4309 transitions. [2023-11-29 05:02:01,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 368 transitions, 998 flow [2023-11-29 05:02:01,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 368 transitions, 988 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:02:01,530 INFO L231 Difference]: Finished difference. Result has 373 places, 358 transitions, 778 flow [2023-11-29 05:02:01,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=778, PETRI_PLACES=373, PETRI_TRANSITIONS=358} [2023-11-29 05:02:01,532 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 7 predicate places. [2023-11-29 05:02:01,532 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 358 transitions, 778 flow [2023-11-29 05:02:01,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 265.9230769230769) internal successors, (3457), 13 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states 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 05:02:01,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:02:01,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:01,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:02:01,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:01,735 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:02:01,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:01,735 INFO L85 PathProgramCache]: Analyzing trace with hash 615638562, now seen corresponding path program 1 times [2023-11-29 05:02:01,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:01,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008546124] [2023-11-29 05:02:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:01,771 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:01,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320048385] [2023-11-29 05:02:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:01,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:01,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:01,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:01,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:02:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:01,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:02:01,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:01,979 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 05:02:01,988 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 05:02:02,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:02:02,004 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 05:02:02,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:02:02,027 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 05:02:02,049 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 05:02:02,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:02,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:02,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008546124] [2023-11-29 05:02:02,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:02,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320048385] [2023-11-29 05:02:02,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320048385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:02,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:02,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:02:02,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157044893] [2023-11-29 05:02:02,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:02,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:02:02,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:02,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:02:02,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:02,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 378 [2023-11-29 05:02:02,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 358 transitions, 778 flow. Second operand has 6 states, 6 states have (on average 281.5) internal successors, (1689), 6 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states 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 05:02:02,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:02:02,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 378 [2023-11-29 05:02:02,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:03,018 INFO L124 PetriNetUnfolderBase]: 451/2139 cut-off events. [2023-11-29 05:02:03,018 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 05:02:03,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 2139 events. 451/2139 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12399 event pairs, 342 based on Foata normal form. 0/1939 useless extension candidates. Maximal degree in co-relation 2612. Up to 972 conditions per place. [2023-11-29 05:02:03,029 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 88 selfloop transitions, 5 changer transitions 0/357 dead transitions. [2023-11-29 05:02:03,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 357 transitions, 962 flow [2023-11-29 05:02:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:02:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:02:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1738 transitions. [2023-11-29 05:02:03,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7663139329805997 [2023-11-29 05:02:03,034 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1738 transitions. [2023-11-29 05:02:03,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1738 transitions. [2023-11-29 05:02:03,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:02:03,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1738 transitions. [2023-11-29 05:02:03,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 289.6666666666667) internal successors, (1738), 6 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states 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 05:02:03,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:02:03,042 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:02:03,042 INFO L175 Difference]: Start difference. First operand has 373 places, 358 transitions, 778 flow. Second operand 6 states and 1738 transitions. [2023-11-29 05:02:03,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 357 transitions, 962 flow [2023-11-29 05:02:03,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 357 transitions, 926 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-29 05:02:03,049 INFO L231 Difference]: Finished difference. Result has 363 places, 357 transitions, 750 flow [2023-11-29 05:02:03,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=363, PETRI_TRANSITIONS=357} [2023-11-29 05:02:03,051 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, -3 predicate places. [2023-11-29 05:02:03,051 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 357 transitions, 750 flow [2023-11-29 05:02:03,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.5) internal successors, (1689), 6 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states 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 05:02:03,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:02:03,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:03,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:02:03,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:03,253 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:02:03,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash -144950802, now seen corresponding path program 1 times [2023-11-29 05:02:03,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:03,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814473501] [2023-11-29 05:02:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:03,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:03,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:03,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161026784] [2023-11-29 05:02:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:03,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:03,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:03,292 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:03,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:02:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:03,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:02:03,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:02:03,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:02:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:02:03,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:03,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814473501] [2023-11-29 05:02:03,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:03,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161026784] [2023-11-29 05:02:03,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161026784] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:02:03,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:02:03,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 05:02:03,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152727254] [2023-11-29 05:02:03,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:02:03,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:02:03,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:02:03,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:02:03,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 378 [2023-11-29 05:02:03,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 357 transitions, 750 flow. Second operand has 8 states, 8 states have (on average 354.75) internal successors, (2838), 8 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states 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 05:02:03,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:02:03,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 378 [2023-11-29 05:02:03,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:04,014 INFO L124 PetriNetUnfolderBase]: 30/1025 cut-off events. [2023-11-29 05:02:04,014 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 05:02:04,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 1025 events. 30/1025 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2102 event pairs, 18 based on Foata normal form. 4/989 useless extension candidates. Maximal degree in co-relation 581. Up to 49 conditions per place. [2023-11-29 05:02:04,017 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 15 selfloop transitions, 9 changer transitions 0/365 dead transitions. [2023-11-29 05:02:04,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 365 transitions, 816 flow [2023-11-29 05:02:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:02:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:02:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3203 transitions. [2023-11-29 05:02:04,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9415049970605526 [2023-11-29 05:02:04,025 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3203 transitions. [2023-11-29 05:02:04,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3203 transitions. [2023-11-29 05:02:04,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:02:04,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3203 transitions. [2023-11-29 05:02:04,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 355.8888888888889) internal successors, (3203), 9 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states 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 05:02:04,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 378.0) internal successors, (3780), 10 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states 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 05:02:04,035 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 378.0) internal successors, (3780), 10 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states 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 05:02:04,035 INFO L175 Difference]: Start difference. First operand has 363 places, 357 transitions, 750 flow. Second operand 9 states and 3203 transitions. [2023-11-29 05:02:04,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 365 transitions, 816 flow [2023-11-29 05:02:04,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 365 transitions, 806 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:02:04,041 INFO L231 Difference]: Finished difference. Result has 369 places, 363 transitions, 790 flow [2023-11-29 05:02:04,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=790, PETRI_PLACES=369, PETRI_TRANSITIONS=363} [2023-11-29 05:02:04,042 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 3 predicate places. [2023-11-29 05:02:04,042 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 363 transitions, 790 flow [2023-11-29 05:02:04,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 354.75) internal successors, (2838), 8 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states 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 05:02:04,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:02:04,043 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:04,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 05:02:04,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:04,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:02:04,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:04,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1002302126, now seen corresponding path program 2 times [2023-11-29 05:02:04,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:04,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307309473] [2023-11-29 05:02:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:04,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:04,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:04,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815773510] [2023-11-29 05:02:04,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:02:04,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:04,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:04,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:04,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:02:04,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:02:04,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:02:04,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:02:04,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:04,598 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 15 treesize of output 11 [2023-11-29 05:02:04,607 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 28 treesize of output 27 [2023-11-29 05:02:04,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:02:04,626 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 40 treesize of output 42 [2023-11-29 05:02:04,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:02:04,656 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 52 treesize of output 57 [2023-11-29 05:02:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-29 05:02:04,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:04,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307309473] [2023-11-29 05:02:04,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815773510] [2023-11-29 05:02:04,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815773510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:04,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:04,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:02:04,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468732338] [2023-11-29 05:02:04,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:04,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:02:04,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:04,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:02:04,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:05,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 378 [2023-11-29 05:02:05,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 363 transitions, 790 flow. Second operand has 6 states, 6 states have (on average 315.3333333333333) internal successors, (1892), 6 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states 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 05:02:05,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:02:05,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 378 [2023-11-29 05:02:05,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:05,773 INFO L124 PetriNetUnfolderBase]: 76/1344 cut-off events. [2023-11-29 05:02:05,773 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 05:02:05,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 1344 events. 76/1344 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4189 event pairs, 42 based on Foata normal form. 0/1261 useless extension candidates. Maximal degree in co-relation 1157. Up to 307 conditions per place. [2023-11-29 05:02:05,779 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 54 selfloop transitions, 5 changer transitions 0/362 dead transitions. [2023-11-29 05:02:05,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 362 transitions, 906 flow [2023-11-29 05:02:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:02:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:02:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1908 transitions. [2023-11-29 05:02:05,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8412698412698413 [2023-11-29 05:02:05,784 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1908 transitions. [2023-11-29 05:02:05,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1908 transitions. [2023-11-29 05:02:05,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:02:05,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1908 transitions. [2023-11-29 05:02:05,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states 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 05:02:05,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:02:05,794 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:02:05,794 INFO L175 Difference]: Start difference. First operand has 369 places, 363 transitions, 790 flow. Second operand 6 states and 1908 transitions. [2023-11-29 05:02:05,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 362 transitions, 906 flow [2023-11-29 05:02:05,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 362 transitions, 900 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 05:02:05,803 INFO L231 Difference]: Finished difference. Result has 372 places, 362 transitions, 792 flow [2023-11-29 05:02:05,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=792, PETRI_PLACES=372, PETRI_TRANSITIONS=362} [2023-11-29 05:02:05,804 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 6 predicate places. [2023-11-29 05:02:05,804 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 362 transitions, 792 flow [2023-11-29 05:02:05,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 315.3333333333333) internal successors, (1892), 6 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states 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 05:02:05,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:02:05,806 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:05,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:02:06,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:06,007 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:02:06,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:06,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1241792696, now seen corresponding path program 1 times [2023-11-29 05:02:06,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:06,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298758449] [2023-11-29 05:02:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:06,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:06,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:06,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931078243] [2023-11-29 05:02:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:06,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:06,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:06,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:06,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:02:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:06,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:02:06,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:02:06,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:02:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:02:07,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:07,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298758449] [2023-11-29 05:02:07,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:07,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931078243] [2023-11-29 05:02:07,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931078243] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:02:07,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:02:07,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 05:02:07,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594446720] [2023-11-29 05:02:07,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:02:07,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:02:07,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:02:07,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:02:07,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 378 [2023-11-29 05:02:07,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 362 transitions, 792 flow. Second operand has 16 states, 16 states have (on average 354.875) internal successors, (5678), 16 states have internal predecessors, (5678), 0 states have call successors, (0), 0 states 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 05:02:07,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:02:07,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 378 [2023-11-29 05:02:07,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:07,953 INFO L124 PetriNetUnfolderBase]: 30/1752 cut-off events. [2023-11-29 05:02:07,953 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-29 05:02:07,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2002 conditions, 1752 events. 30/1752 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2103 event pairs, 18 based on Foata normal form. 8/1721 useless extension candidates. Maximal degree in co-relation 1588. Up to 49 conditions per place. [2023-11-29 05:02:07,958 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 19 selfloop transitions, 21 changer transitions 0/380 dead transitions. [2023-11-29 05:02:07,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 380 transitions, 960 flow [2023-11-29 05:02:07,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:02:07,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 05:02:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7457 transitions. [2023-11-29 05:02:07,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9394053917863442 [2023-11-29 05:02:07,977 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7457 transitions. [2023-11-29 05:02:07,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7457 transitions. [2023-11-29 05:02:07,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:02:07,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7457 transitions. [2023-11-29 05:02:07,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 355.0952380952381) internal successors, (7457), 21 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states 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 05:02:08,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 378.0) internal successors, (8316), 22 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states 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 05:02:08,006 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 378.0) internal successors, (8316), 22 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states 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 05:02:08,006 INFO L175 Difference]: Start difference. First operand has 372 places, 362 transitions, 792 flow. Second operand 21 states and 7457 transitions. [2023-11-29 05:02:08,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 380 transitions, 960 flow [2023-11-29 05:02:08,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 380 transitions, 950 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:02:08,014 INFO L231 Difference]: Finished difference. Result has 392 places, 375 transitions, 912 flow [2023-11-29 05:02:08,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=912, PETRI_PLACES=392, PETRI_TRANSITIONS=375} [2023-11-29 05:02:08,015 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 26 predicate places. [2023-11-29 05:02:08,015 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 375 transitions, 912 flow [2023-11-29 05:02:08,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 354.875) internal successors, (5678), 16 states have internal predecessors, (5678), 0 states have call successors, (0), 0 states 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 05:02:08,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:02:08,017 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 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 05:02:08,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:02:08,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:08,218 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:02:08,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:08,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1017450296, now seen corresponding path program 2 times [2023-11-29 05:02:08,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:08,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893254534] [2023-11-29 05:02:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:08,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:08,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:08,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488113735] [2023-11-29 05:02:08,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:02:08,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:08,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:08,340 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:08,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:02:08,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:02:08,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:02:08,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:02:08,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:08,891 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 15 treesize of output 11 [2023-11-29 05:02:08,919 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 28 treesize of output 27 [2023-11-29 05:02:08,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:02:08,937 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 40 treesize of output 42 [2023-11-29 05:02:08,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:02:08,964 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 52 treesize of output 57 [2023-11-29 05:02:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2023-11-29 05:02:08,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:08,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:08,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893254534] [2023-11-29 05:02:08,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:08,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488113735] [2023-11-29 05:02:08,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488113735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:08,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:08,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:02:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251844694] [2023-11-29 05:02:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:02:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:02:08,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:09,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 378 [2023-11-29 05:02:09,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 375 transitions, 912 flow. Second operand has 6 states, 6 states have (on average 315.3333333333333) internal successors, (1892), 6 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states 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 05:02:09,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:02:09,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 378 [2023-11-29 05:02:09,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:10,326 INFO L124 PetriNetUnfolderBase]: 76/2071 cut-off events. [2023-11-29 05:02:10,326 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-29 05:02:10,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 2071 events. 76/2071 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4186 event pairs, 42 based on Foata normal form. 0/1989 useless extension candidates. Maximal degree in co-relation 1686. Up to 531 conditions per place. [2023-11-29 05:02:10,335 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 54 selfloop transitions, 5 changer transitions 0/374 dead transitions. [2023-11-29 05:02:10,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 374 transitions, 1028 flow [2023-11-29 05:02:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:02:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:02:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1908 transitions. [2023-11-29 05:02:10,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8412698412698413 [2023-11-29 05:02:10,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1908 transitions. [2023-11-29 05:02:10,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1908 transitions. [2023-11-29 05:02:10,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:02:10,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1908 transitions. [2023-11-29 05:02:10,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states 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 05:02:10,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:02:10,348 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:02:10,348 INFO L175 Difference]: Start difference. First operand has 392 places, 375 transitions, 912 flow. Second operand 6 states and 1908 transitions. [2023-11-29 05:02:10,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 374 transitions, 1028 flow [2023-11-29 05:02:10,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 374 transitions, 1004 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 05:02:10,360 INFO L231 Difference]: Finished difference. Result has 390 places, 374 transitions, 896 flow [2023-11-29 05:02:10,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=896, PETRI_PLACES=390, PETRI_TRANSITIONS=374} [2023-11-29 05:02:10,361 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 24 predicate places. [2023-11-29 05:02:10,361 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 374 transitions, 896 flow [2023-11-29 05:02:10,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 315.3333333333333) internal successors, (1892), 6 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states 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 05:02:10,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:02:10,363 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:10,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:02:10,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:02:10,570 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:02:10,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:10,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1908555970, now seen corresponding path program 1 times [2023-11-29 05:02:10,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:10,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966402507] [2023-11-29 05:02:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:10,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:10,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:10,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018577060] [2023-11-29 05:02:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:10,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:10,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:10,710 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:10,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:02:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:11,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:02:11,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:02:12,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:02:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:02:13,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:13,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966402507] [2023-11-29 05:02:13,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018577060] [2023-11-29 05:02:13,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018577060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:02:13,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:02:13,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-29 05:02:13,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137248380] [2023-11-29 05:02:13,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:02:13,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 05:02:13,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:13,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 05:02:13,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-29 05:02:13,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 378 [2023-11-29 05:02:13,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 374 transitions, 896 flow. Second operand has 32 states, 32 states have (on average 355.0) internal successors, (11360), 32 states have internal predecessors, (11360), 0 states have call successors, (0), 0 states 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 05:02:13,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:02:13,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 378 [2023-11-29 05:02:13,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:14,745 INFO L124 PetriNetUnfolderBase]: 30/3207 cut-off events. [2023-11-29 05:02:14,745 INFO L125 PetriNetUnfolderBase]: For 566/566 co-relation queries the response was YES. [2023-11-29 05:02:14,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3784 conditions, 3207 events. 30/3207 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2096 event pairs, 18 based on Foata normal form. 16/3185 useless extension candidates. Maximal degree in co-relation 3752. Up to 52 conditions per place. [2023-11-29 05:02:14,750 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 27 selfloop transitions, 45 changer transitions 0/411 dead transitions. [2023-11-29 05:02:14,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 411 transitions, 1312 flow [2023-11-29 05:02:14,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 05:02:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-29 05:02:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 15965 transitions. [2023-11-29 05:02:14,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9385655496766608 [2023-11-29 05:02:14,768 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 15965 transitions. [2023-11-29 05:02:14,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 15965 transitions. [2023-11-29 05:02:14,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:02:14,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 15965 transitions. [2023-11-29 05:02:14,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 354.77777777777777) internal successors, (15965), 45 states have internal predecessors, (15965), 0 states have call successors, (0), 0 states 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 05:02:14,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 378.0) internal successors, (17388), 46 states have internal predecessors, (17388), 0 states have call successors, (0), 0 states 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 05:02:14,811 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 378.0) internal successors, (17388), 46 states have internal predecessors, (17388), 0 states have call successors, (0), 0 states 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 05:02:14,811 INFO L175 Difference]: Start difference. First operand has 390 places, 374 transitions, 896 flow. Second operand 45 states and 15965 transitions. [2023-11-29 05:02:14,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 411 transitions, 1312 flow [2023-11-29 05:02:14,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 411 transitions, 1302 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:02:14,820 INFO L231 Difference]: Finished difference. Result has 438 places, 399 transitions, 1188 flow [2023-11-29 05:02:14,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1188, PETRI_PLACES=438, PETRI_TRANSITIONS=399} [2023-11-29 05:02:14,822 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 72 predicate places. [2023-11-29 05:02:14,822 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 399 transitions, 1188 flow [2023-11-29 05:02:14,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 355.0) internal successors, (11360), 32 states have internal predecessors, (11360), 0 states have call successors, (0), 0 states 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 05:02:14,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:02:14,824 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:14,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 05:02:15,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:02:15,025 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:02:15,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:15,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1333551299, now seen corresponding path program 1 times [2023-11-29 05:02:15,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:15,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689398406] [2023-11-29 05:02:15,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:15,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:15,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:15,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039378074] [2023-11-29 05:02:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:15,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:15,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:15,243 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:15,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:02:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:16,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 5838 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 05:02:16,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:02:18,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:02:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:02:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689398406] [2023-11-29 05:02:19,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039378074] [2023-11-29 05:02:19,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039378074] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:02:19,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:02:19,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2023-11-29 05:02:19,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023766187] [2023-11-29 05:02:19,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:02:19,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 05:02:19,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 05:02:19,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 05:02:19,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 378 [2023-11-29 05:02:19,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 399 transitions, 1188 flow. Second operand has 61 states, 61 states have (on average 355.0327868852459) internal successors, (21657), 61 states have internal predecessors, (21657), 0 states have call successors, (0), 0 states 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 05:02:19,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:02:19,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 378 [2023-11-29 05:02:19,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:25,201 INFO L124 PetriNetUnfolderBase]: 30/5937 cut-off events. [2023-11-29 05:02:25,201 INFO L125 PetriNetUnfolderBase]: For 4148/4148 co-relation queries the response was YES. [2023-11-29 05:02:25,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7353 conditions, 5937 events. 30/5937 cut-off events. For 4148/4148 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2093 event pairs, 18 based on Foata normal form. 30/5929 useless extension candidates. Maximal degree in co-relation 3430. Up to 112 conditions per place. [2023-11-29 05:02:25,209 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 42 selfloop transitions, 90 changer transitions 0/471 dead transitions. [2023-11-29 05:02:25,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 471 transitions, 2198 flow [2023-11-29 05:02:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-11-29 05:02:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-11-29 05:02:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 31917 transitions. [2023-11-29 05:02:25,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9381834215167548 [2023-11-29 05:02:25,230 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 31917 transitions. [2023-11-29 05:02:25,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 31917 transitions. [2023-11-29 05:02:25,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:02:25,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 31917 transitions. [2023-11-29 05:02:25,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 354.6333333333333) internal successors, (31917), 90 states have internal predecessors, (31917), 0 states have call successors, (0), 0 states 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 05:02:25,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 378.0) internal successors, (34398), 91 states have internal predecessors, (34398), 0 states have call successors, (0), 0 states 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 05:02:25,294 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 378.0) internal successors, (34398), 91 states have internal predecessors, (34398), 0 states have call successors, (0), 0 states 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 05:02:25,294 INFO L175 Difference]: Start difference. First operand has 438 places, 399 transitions, 1188 flow. Second operand 90 states and 31917 transitions. [2023-11-29 05:02:25,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 471 transitions, 2198 flow [2023-11-29 05:02:25,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 471 transitions, 2112 flow, removed 25 selfloop flow, removed 18 redundant places. [2023-11-29 05:02:25,311 INFO L231 Difference]: Finished difference. Result has 525 places, 445 transitions, 1786 flow [2023-11-29 05:02:25,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1786, PETRI_PLACES=525, PETRI_TRANSITIONS=445} [2023-11-29 05:02:25,312 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 159 predicate places. [2023-11-29 05:02:25,312 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 445 transitions, 1786 flow [2023-11-29 05:02:25,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 355.0327868852459) internal successors, (21657), 61 states have internal predecessors, (21657), 0 states have call successors, (0), 0 states 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 05:02:25,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:02:25,316 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:25,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 05:02:25,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:02:25,517 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:02:25,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1999112849, now seen corresponding path program 2 times [2023-11-29 05:02:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334047253] [2023-11-29 05:02:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:25,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:25,936 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:25,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113197462] [2023-11-29 05:02:25,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:02:25,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:25,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:25,938 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:25,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:02:27,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:02:27,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:02:27,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:02:27,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:27,553 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 15 treesize of output 11 [2023-11-29 05:02:27,562 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 28 treesize of output 27 [2023-11-29 05:02:27,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:02:27,585 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 40 treesize of output 42 [2023-11-29 05:02:27,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:02:27,607 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 52 treesize of output 57 [2023-11-29 05:02:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2023-11-29 05:02:27,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:27,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:27,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334047253] [2023-11-29 05:02:27,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:27,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113197462] [2023-11-29 05:02:27,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113197462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:27,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:27,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:02:27,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940665010] [2023-11-29 05:02:27,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:27,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:02:27,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:27,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:02:27,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:28,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 378 [2023-11-29 05:02:28,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 445 transitions, 1786 flow. Second operand has 6 states, 6 states have (on average 316.5) internal successors, (1899), 6 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states 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 05:02:28,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:02:28,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 378 [2023-11-29 05:02:28,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:33,798 INFO L124 PetriNetUnfolderBase]: 200/6830 cut-off events. [2023-11-29 05:02:33,799 INFO L125 PetriNetUnfolderBase]: For 1984/1984 co-relation queries the response was YES. [2023-11-29 05:02:33,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10227 conditions, 6830 events. 200/6830 cut-off events. For 1984/1984 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 8968 event pairs, 54 based on Foata normal form. 0/6687 useless extension candidates. Maximal degree in co-relation 5735. Up to 1960 conditions per place. [2023-11-29 05:02:33,815 INFO L140 encePairwiseOnDemand]: 366/378 looper letters, 71 selfloop transitions, 23 changer transitions 0/480 dead transitions. [2023-11-29 05:02:33,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 480 transitions, 2052 flow [2023-11-29 05:02:33,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:02:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:02:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1949 transitions. [2023-11-29 05:02:33,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.859347442680776 [2023-11-29 05:02:33,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1949 transitions. [2023-11-29 05:02:33,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1949 transitions. [2023-11-29 05:02:33,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:02:33,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1949 transitions. [2023-11-29 05:02:33,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 324.8333333333333) internal successors, (1949), 6 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states 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 05:02:33,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:02:33,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:02:33,822 INFO L175 Difference]: Start difference. First operand has 525 places, 445 transitions, 1786 flow. Second operand 6 states and 1949 transitions. [2023-11-29 05:02:33,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 480 transitions, 2052 flow [2023-11-29 05:02:33,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 480 transitions, 1934 flow, removed 17 selfloop flow, removed 42 redundant places. [2023-11-29 05:02:33,848 INFO L231 Difference]: Finished difference. Result has 493 places, 467 transitions, 1826 flow [2023-11-29 05:02:33,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1826, PETRI_PLACES=493, PETRI_TRANSITIONS=467} [2023-11-29 05:02:33,849 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 127 predicate places. [2023-11-29 05:02:33,849 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 467 transitions, 1826 flow [2023-11-29 05:02:33,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 316.5) internal successors, (1899), 6 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states 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 05:02:33,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:02:33,851 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:33,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 05:02:34,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:02:34,052 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:02:34,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1667052872, now seen corresponding path program 1 times [2023-11-29 05:02:34,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:34,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006880697] [2023-11-29 05:02:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:34,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:34,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:34,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841831973] [2023-11-29 05:02:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:34,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:34,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:34,552 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:34,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:02:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:37,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 11401 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:02:37,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2023-11-29 05:02:41,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:02:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2023-11-29 05:02:44,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:44,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006880697] [2023-11-29 05:02:44,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:44,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841831973] [2023-11-29 05:02:44,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841831973] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:02:44,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:02:44,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 05:02:44,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257086124] [2023-11-29 05:02:44,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:02:44,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:02:44,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:44,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:02:44,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:02:44,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 378 [2023-11-29 05:02:44,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 467 transitions, 1826 flow. Second operand has 8 states, 8 states have (on average 355.125) internal successors, (2841), 8 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states 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 05:02:44,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:02:44,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 378 [2023-11-29 05:02:44,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:57,569 INFO L124 PetriNetUnfolderBase]: 187/9762 cut-off events. [2023-11-29 05:02:57,569 INFO L125 PetriNetUnfolderBase]: For 3227/3231 co-relation queries the response was YES. [2023-11-29 05:02:57,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12040 conditions, 9762 events. 187/9762 cut-off events. For 3227/3231 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8544 event pairs, 55 based on Foata normal form. 2/9602 useless extension candidates. Maximal degree in co-relation 10685. Up to 168 conditions per place. [2023-11-29 05:02:57,589 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 15 selfloop transitions, 9 changer transitions 0/475 dead transitions. [2023-11-29 05:02:57,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 475 transitions, 1892 flow [2023-11-29 05:02:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:02:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:02:57,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3203 transitions. [2023-11-29 05:02:57,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9415049970605526 [2023-11-29 05:02:57,593 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3203 transitions. [2023-11-29 05:02:57,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3203 transitions. [2023-11-29 05:02:57,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:02:57,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3203 transitions. [2023-11-29 05:02:57,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 355.8888888888889) internal successors, (3203), 9 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states 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 05:02:57,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 378.0) internal successors, (3780), 10 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states 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 05:02:57,625 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 378.0) internal successors, (3780), 10 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states 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 05:02:57,625 INFO L175 Difference]: Start difference. First operand has 493 places, 467 transitions, 1826 flow. Second operand 9 states and 3203 transitions. [2023-11-29 05:02:57,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 475 transitions, 1892 flow [2023-11-29 05:02:57,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 475 transitions, 1892 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:02:57,667 INFO L231 Difference]: Finished difference. Result has 504 places, 473 transitions, 1876 flow [2023-11-29 05:02:57,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1876, PETRI_PLACES=504, PETRI_TRANSITIONS=473} [2023-11-29 05:02:57,668 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 138 predicate places. [2023-11-29 05:02:57,668 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 473 transitions, 1876 flow [2023-11-29 05:02:57,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 355.125) internal successors, (2841), 8 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states 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 05:02:57,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:02:57,673 INFO L208 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:57,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:02:57,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:02:57,873 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:02:57,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:57,875 INFO L85 PathProgramCache]: Analyzing trace with hash 212587992, now seen corresponding path program 2 times [2023-11-29 05:02:57,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:57,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149547564] [2023-11-29 05:02:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:59,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:59,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282390789] [2023-11-29 05:02:59,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:02:59,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:59,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:59,098 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:59,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:03:02,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:03:02,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:03:02,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:03:02,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:03,115 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 15 treesize of output 11 [2023-11-29 05:03:03,122 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 28 treesize of output 27 [2023-11-29 05:03:03,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:03:03,137 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 40 treesize of output 42 [2023-11-29 05:03:03,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:03:03,161 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 52 treesize of output 57 [2023-11-29 05:03:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 364815 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364815 trivial. 0 not checked. [2023-11-29 05:03:03,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:03,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:03,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149547564] [2023-11-29 05:03:03,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:03:03,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282390789] [2023-11-29 05:03:03,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282390789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:03,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:03:03,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:03:03,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705218242] [2023-11-29 05:03:03,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:03,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:03:03,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:03,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:03:03,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:03:04,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 378 [2023-11-29 05:03:04,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 473 transitions, 1876 flow. Second operand has 6 states, 6 states have (on average 316.6666666666667) internal successors, (1900), 6 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 05:03:04,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:03:04,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 378 [2023-11-29 05:03:04,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:03:20,696 INFO L124 PetriNetUnfolderBase]: 312/10318 cut-off events. [2023-11-29 05:03:20,696 INFO L125 PetriNetUnfolderBase]: For 3448/3481 co-relation queries the response was YES. [2023-11-29 05:03:20,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15587 conditions, 10318 events. 312/10318 cut-off events. For 3448/3481 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 14780 event pairs, 61 based on Foata normal form. 8/10111 useless extension candidates. Maximal degree in co-relation 13375. Up to 2941 conditions per place. [2023-11-29 05:03:20,725 INFO L140 encePairwiseOnDemand]: 366/378 looper letters, 84 selfloop transitions, 31 changer transitions 0/512 dead transitions. [2023-11-29 05:03:20,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 512 transitions, 2226 flow [2023-11-29 05:03:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:03:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:03:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1945 transitions. [2023-11-29 05:03:20,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.857583774250441 [2023-11-29 05:03:20,728 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1945 transitions. [2023-11-29 05:03:20,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1945 transitions. [2023-11-29 05:03:20,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:03:20,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1945 transitions. [2023-11-29 05:03:20,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 324.1666666666667) internal successors, (1945), 6 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states 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 05:03:20,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:03:20,734 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:03:20,734 INFO L175 Difference]: Start difference. First operand has 504 places, 473 transitions, 1876 flow. Second operand 6 states and 1945 transitions. [2023-11-29 05:03:20,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 512 transitions, 2226 flow [2023-11-29 05:03:20,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 512 transitions, 2220 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 05:03:20,776 INFO L231 Difference]: Finished difference. Result has 513 places, 503 transitions, 2128 flow [2023-11-29 05:03:20,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2128, PETRI_PLACES=513, PETRI_TRANSITIONS=503} [2023-11-29 05:03:20,777 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 147 predicate places. [2023-11-29 05:03:20,777 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 503 transitions, 2128 flow [2023-11-29 05:03:20,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 316.6666666666667) internal successors, (1900), 6 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 05:03:20,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:03:20,782 INFO L208 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:20,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:03:20,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:20,983 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:03:20,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:20,984 INFO L85 PathProgramCache]: Analyzing trace with hash -624568390, now seen corresponding path program 1 times [2023-11-29 05:03:20,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:20,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315921401] [2023-11-29 05:03:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:20,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:22,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:03:22,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081429526] [2023-11-29 05:03:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:22,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:22,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:22,407 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:22,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:03:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:31,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 33751 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:03:31,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 364815 backedges. 0 proven. 245970 refuted. 0 times theorem prover too weak. 118845 trivial. 0 not checked. [2023-11-29 05:03:40,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:03:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 364815 backedges. 0 proven. 245970 refuted. 0 times theorem prover too weak. 118845 trivial. 0 not checked. [2023-11-29 05:03:49,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:49,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315921401] [2023-11-29 05:03:49,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:03:49,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081429526] [2023-11-29 05:03:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081429526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:03:49,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:03:49,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 05:03:49,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76835182] [2023-11-29 05:03:49,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:03:49,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:03:49,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:49,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:03:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:03:49,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 378 [2023-11-29 05:03:49,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 503 transitions, 2128 flow. Second operand has 16 states, 16 states have (on average 355.0) internal successors, (5680), 16 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states 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 05:03:49,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:03:49,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 378 [2023-11-29 05:03:49,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:04:43,419 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([787] L1046-3-->L1051-2: Formula: (and (= |v_#pthreadsMutex_11| (store |v_#pthreadsMutex_12| |v_~#c~0.base_34| (store (select |v_#pthreadsMutex_12| |v_~#c~0.base_34|) (+ (* |v_fThread1of1ForFork1_~j~0#1_29| 24) |v_~#c~0.offset_32| 80) 0))) (= 0 |v_fThread1of1ForFork1_#t~nondet22#1_1|)) InVars {~#c~0.base=|v_~#c~0.base_34|, fThread1of1ForFork1_~j~0#1=|v_fThread1of1ForFork1_~j~0#1_29|, #pthreadsMutex=|v_#pthreadsMutex_12|, ~#c~0.offset=|v_~#c~0.offset_32|} OutVars{~#c~0.base=|v_~#c~0.base_34|, fThread1of1ForFork1_~j~0#1=|v_fThread1of1ForFork1_~j~0#1_29|, #pthreadsMutex=|v_#pthreadsMutex_11|, fThread1of1ForFork1_#t~nondet22#1=|v_fThread1of1ForFork1_#t~nondet22#1_1|, ~#c~0.offset=|v_~#c~0.offset_32|} AuxVars[] AssignedVars[#pthreadsMutex, fThread1of1ForFork1_#t~nondet22#1][412], [Black: 387#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 2802#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 2627#(<= |ULTIMATE.start_main_~j~1#1| 1), 8451#true, 2233#true, 21991#true, 12989#true, Black: 30487#(and (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset| 1)) 0)), Black: 30491#(and (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) 2 |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset| 1)) 0)), Black: 30483#(= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0), Black: 30495#(and (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) 2 |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) 3 |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset| 1)) 0)), 1716#(= 0 |ULTIMATE.start_new_#res#1.offset|), 72639#true, Black: 11716#(< |ULTIMATE.start_main_~j~1#1| 26), Black: 5356#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 11441#(< |ULTIMATE.start_main_~j~1#1| 27), Black: 5181#(<= |ULTIMATE.start_main_~j~1#1| 3), Black: 565#(= |ULTIMATE.start_main_~j~1#1| 0), Black: 5642#(< |ULTIMATE.start_main_~j~1#1| 28), Black: 10495#(<= |ULTIMATE.start_main_~j~1#1| 7), Black: 5367#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 12266#(< |ULTIMATE.start_main_~j~1#1| 24), Black: 10880#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 72624#(and (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|) 1)) 0) (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0)), Black: 11166#(< |ULTIMATE.start_main_~j~1#1| 28), Black: 11991#(< |ULTIMATE.start_main_~j~1#1| 25), Black: 72628#(and (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|) 1)) 0) (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0) (= (select (select |#race| |~#c~0.base|) (+ 2 |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0)), Black: 10891#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 72632#(and (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|) 1)) 0) (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0) (= (select (select |#race| |~#c~0.base|) (+ 2 |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0) (= 0 (select (select |#race| |~#c~0.base|) (+ 3 |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))))), Black: 72620#(= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0), Black: 38828#(<= |ULTIMATE.start_main_~i~0#1| 1), Black: 39219#(< |ULTIMATE.start_main_~i~0#1| 10), 4237#true, Black: 17233#(<= |ULTIMATE.start_main_~j~1#1| 15), Black: 17618#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 17629#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 19829#(< |ULTIMATE.start_main_~j~1#1| 21), Black: 20379#(< |ULTIMATE.start_main_~j~1#1| 19), Black: 19554#(< |ULTIMATE.start_main_~j~1#1| 22), Black: 19279#(< |ULTIMATE.start_main_~j~1#1| 23), Black: 18179#(< |ULTIMATE.start_main_~j~1#1| 27), Black: 20654#(< |ULTIMATE.start_main_~j~1#1| 18), 30502#true, 120#L1051-2true, Black: 19004#(< |ULTIMATE.start_main_~j~1#1| 24), Black: 18454#(< |ULTIMATE.start_main_~j~1#1| 26), Black: 18729#(< |ULTIMATE.start_main_~j~1#1| 25), Black: 17904#(< |ULTIMATE.start_main_~j~1#1| 28), 47556#true, Black: 20104#(< |ULTIMATE.start_main_~j~1#1| 20), Black: 20929#(< |ULTIMATE.start_main_~j~1#1| 17), 266#ULTIMATE.startFINALtrue, 311#L1051-2true, fThread1of1ForFork0InUse, fThread1of1ForFork1InUse]) [2023-11-29 05:04:43,420 INFO L294 olderBase$Statistics]: this new event has 19490 ancestors and is cut-off event [2023-11-29 05:04:43,420 INFO L297 olderBase$Statistics]: existing Event has 19463 ancestors and is cut-off event [2023-11-29 05:04:43,420 INFO L297 olderBase$Statistics]: existing Event has 19463 ancestors and is cut-off event [2023-11-29 05:04:43,420 INFO L297 olderBase$Statistics]: existing Event has 19463 ancestors and is cut-off event [2023-11-29 05:04:46,855 INFO L124 PetriNetUnfolderBase]: 345/21668 cut-off events. [2023-11-29 05:04:46,855 INFO L125 PetriNetUnfolderBase]: For 7801/7819 co-relation queries the response was YES. [2023-11-29 05:04:46,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27016 conditions, 21668 events. 345/21668 cut-off events. For 7801/7819 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 17056 event pairs, 100 based on Foata normal form. 10/21422 useless extension candidates. Maximal degree in co-relation 24348. Up to 392 conditions per place. [2023-11-29 05:04:46,920 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 19 selfloop transitions, 21 changer transitions 0/521 dead transitions. [2023-11-29 05:04:46,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 521 transitions, 2296 flow [2023-11-29 05:04:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:04:46,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 05:04:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7457 transitions. [2023-11-29 05:04:46,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9394053917863442 [2023-11-29 05:04:46,928 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7457 transitions. [2023-11-29 05:04:46,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7457 transitions. [2023-11-29 05:04:46,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:04:46,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7457 transitions. [2023-11-29 05:04:46,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 355.0952380952381) internal successors, (7457), 21 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states 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 05:04:46,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 378.0) internal successors, (8316), 22 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states 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 05:04:46,948 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 378.0) internal successors, (8316), 22 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states 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 05:04:46,948 INFO L175 Difference]: Start difference. First operand has 513 places, 503 transitions, 2128 flow. Second operand 21 states and 7457 transitions. [2023-11-29 05:04:46,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 521 transitions, 2296 flow [2023-11-29 05:04:46,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 521 transitions, 2296 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:04:46,996 INFO L231 Difference]: Finished difference. Result has 538 places, 516 transitions, 2258 flow [2023-11-29 05:04:46,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=2128, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2258, PETRI_PLACES=538, PETRI_TRANSITIONS=516} [2023-11-29 05:04:46,997 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 172 predicate places. [2023-11-29 05:04:46,997 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 516 transitions, 2258 flow [2023-11-29 05:04:46,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 355.0) internal successors, (5680), 16 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states 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 05:04:46,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:04:47,005 INFO L208 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:47,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:04:47,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:04:47,206 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:04:47,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:04:47,210 INFO L85 PathProgramCache]: Analyzing trace with hash 919660026, now seen corresponding path program 2 times [2023-11-29 05:04:47,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:04:47,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582789134] [2023-11-29 05:04:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:04:47,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:04:49,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:04:49,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594099239] [2023-11-29 05:04:49,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:04:49,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:04:49,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:04:49,988 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:04:49,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:04:58,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:04:58,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:04:58,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:04:59,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:04:59,491 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 05:04:59,497 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 05:04:59,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:04:59,511 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 05:04:59,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:04:59,532 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 05:04:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1999081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1999081 trivial. 0 not checked. [2023-11-29 05:04:59,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:04:59,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:04:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582789134] [2023-11-29 05:04:59,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:04:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594099239] [2023-11-29 05:04:59,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594099239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:04:59,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:04:59,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:04:59,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785298389] [2023-11-29 05:04:59,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:04:59,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:04:59,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:04:59,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:04:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:05:00,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 378 [2023-11-29 05:05:00,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 516 transitions, 2258 flow. Second operand has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states 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 05:05:00,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:00,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 378 [2023-11-29 05:05:00,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:06:21,783 INFO L124 PetriNetUnfolderBase]: 456/21910 cut-off events. [2023-11-29 05:06:21,784 INFO L125 PetriNetUnfolderBase]: For 8589/8674 co-relation queries the response was YES. [2023-11-29 05:06:21,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33926 conditions, 21910 events. 456/21910 cut-off events. For 8589/8674 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 20254 event pairs, 87 based on Foata normal form. 34/21712 useless extension candidates. Maximal degree in co-relation 30507. Up to 6499 conditions per place. [2023-11-29 05:06:21,856 INFO L140 encePairwiseOnDemand]: 367/378 looper letters, 108 selfloop transitions, 55 changer transitions 0/577 dead transitions. [2023-11-29 05:06:21,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 577 transitions, 2910 flow [2023-11-29 05:06:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:06:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:06:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1942 transitions. [2023-11-29 05:06:21,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8562610229276896 [2023-11-29 05:06:21,858 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1942 transitions. [2023-11-29 05:06:21,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1942 transitions. [2023-11-29 05:06:21,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:06:21,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1942 transitions. [2023-11-29 05:06:21,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 323.6666666666667) internal successors, (1942), 6 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states 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 05:06:21,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:06:21,862 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:06:21,862 INFO L175 Difference]: Start difference. First operand has 538 places, 516 transitions, 2258 flow. Second operand 6 states and 1942 transitions. [2023-11-29 05:06:21,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 577 transitions, 2910 flow [2023-11-29 05:06:21,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 577 transitions, 2886 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 05:06:21,897 INFO L231 Difference]: Finished difference. Result has 542 places, 565 transitions, 2788 flow [2023-11-29 05:06:21,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2788, PETRI_PLACES=542, PETRI_TRANSITIONS=565} [2023-11-29 05:06:21,898 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 176 predicate places. [2023-11-29 05:06:21,898 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 565 transitions, 2788 flow [2023-11-29 05:06:21,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states 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 05:06:21,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:06:21,904 INFO L208 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:06:21,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 05:06:22,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 05:06:22,105 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:06:22,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:06:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash -692148959, now seen corresponding path program 1 times [2023-11-29 05:06:22,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:06:22,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108525326] [2023-11-29 05:06:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:06:22,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:06:24,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:06:24,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218979469] [2023-11-29 05:06:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:06:24,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:06:24,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:06:24,854 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:06:24,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:06:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:06:47,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 78463 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:06:47,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1999081 backedges. 0 proven. 1721776 refuted. 0 times theorem prover too weak. 277305 trivial. 0 not checked. [2023-11-29 05:07:09,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1999081 backedges. 0 proven. 1721776 refuted. 0 times theorem prover too weak. 277305 trivial. 0 not checked. [2023-11-29 05:07:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:31,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108525326] [2023-11-29 05:07:31,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:31,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218979469] [2023-11-29 05:07:31,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218979469] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:07:31,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:31,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2023-11-29 05:07:31,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697528178] [2023-11-29 05:07:31,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:31,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 05:07:31,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:31,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 05:07:31,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:07:31,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 378 [2023-11-29 05:07:31,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 565 transitions, 2788 flow. Second operand has 21 states, 21 states have (on average 355.14285714285717) internal successors, (7458), 21 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states 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 05:07:31,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:07:31,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 378 [2023-11-29 05:07:31,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:26,154 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([787] L1046-3-->L1051-2: Formula: (and (= |v_#pthreadsMutex_11| (store |v_#pthreadsMutex_12| |v_~#c~0.base_34| (store (select |v_#pthreadsMutex_12| |v_~#c~0.base_34|) (+ (* |v_fThread1of1ForFork1_~j~0#1_29| 24) |v_~#c~0.offset_32| 80) 0))) (= 0 |v_fThread1of1ForFork1_#t~nondet22#1_1|)) InVars {~#c~0.base=|v_~#c~0.base_34|, fThread1of1ForFork1_~j~0#1=|v_fThread1of1ForFork1_~j~0#1_29|, #pthreadsMutex=|v_#pthreadsMutex_12|, ~#c~0.offset=|v_~#c~0.offset_32|} OutVars{~#c~0.base=|v_~#c~0.base_34|, fThread1of1ForFork1_~j~0#1=|v_fThread1of1ForFork1_~j~0#1_29|, #pthreadsMutex=|v_#pthreadsMutex_11|, fThread1of1ForFork1_#t~nondet22#1=|v_fThread1of1ForFork1_#t~nondet22#1_1|, ~#c~0.offset=|v_~#c~0.offset_32|} AuxVars[] AssignedVars[#pthreadsMutex, fThread1of1ForFork1_#t~nondet22#1][423], [Black: 2802#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 387#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 2627#(<= |ULTIMATE.start_main_~j~1#1| 1), 8451#true, 21991#true, 2233#true, 12989#true, Black: 30487#(and (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset| 1)) 0)), Black: 30491#(and (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) 2 |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset| 1)) 0)), Black: 30483#(= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0), Black: 30495#(and (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) 2 |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) 3 |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0) (= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset| 1)) 0)), 1716#(= 0 |ULTIMATE.start_new_#res#1.offset|), 72639#true, 122851#true, Black: 11716#(< |ULTIMATE.start_main_~j~1#1| 26), Black: 5356#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 11441#(< |ULTIMATE.start_main_~j~1#1| 27), Black: 5181#(<= |ULTIMATE.start_main_~j~1#1| 3), Black: 565#(= |ULTIMATE.start_main_~j~1#1| 0), Black: 5642#(< |ULTIMATE.start_main_~j~1#1| 28), Black: 10495#(<= |ULTIMATE.start_main_~j~1#1| 7), Black: 5367#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 12266#(< |ULTIMATE.start_main_~j~1#1| 24), Black: 181047#(and (= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) (+ 2 |fThread1of1ForFork0_~pos~0#1.offset|)) 0) (= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) (+ 3 |fThread1of1ForFork0_~pos~0#1.offset|)) 0) (= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) (+ |fThread1of1ForFork0_~pos~0#1.offset| 1)) 0) (= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) |fThread1of1ForFork0_~pos~0#1.offset|) 0)), Black: 10880#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 11166#(< |ULTIMATE.start_main_~j~1#1| 28), Black: 72624#(and (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|) 1)) 0) (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0)), Black: 181035#(= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) |fThread1of1ForFork0_~pos~0#1.offset|) 0), Black: 11991#(< |ULTIMATE.start_main_~j~1#1| 25), Black: 10891#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 72628#(and (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|) 1)) 0) (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0) (= (select (select |#race| |~#c~0.base|) (+ 2 |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0)), Black: 72632#(and (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|) 1)) 0) (= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0) (= (select (select |#race| |~#c~0.base|) (+ 2 |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0) (= 0 (select (select |#race| |~#c~0.base|) (+ 3 |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))))), Black: 181043#(and (= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) (+ 2 |fThread1of1ForFork0_~pos~0#1.offset|)) 0) (= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) (+ |fThread1of1ForFork0_~pos~0#1.offset| 1)) 0) (= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) |fThread1of1ForFork0_~pos~0#1.offset|) 0)), Black: 181039#(and (= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) (+ |fThread1of1ForFork0_~pos~0#1.offset| 1)) 0) (= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) |fThread1of1ForFork0_~pos~0#1.offset|) 0)), Black: 72620#(= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0), Black: 38828#(<= |ULTIMATE.start_main_~i~0#1| 1), Black: 39219#(< |ULTIMATE.start_main_~i~0#1| 10), 4237#true, Black: 17233#(<= |ULTIMATE.start_main_~j~1#1| 15), Black: 17618#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 17629#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 19829#(< |ULTIMATE.start_main_~j~1#1| 21), Black: 20379#(< |ULTIMATE.start_main_~j~1#1| 19), Black: 19554#(< |ULTIMATE.start_main_~j~1#1| 22), Black: 19279#(< |ULTIMATE.start_main_~j~1#1| 23), Black: 18179#(< |ULTIMATE.start_main_~j~1#1| 27), Black: 97523#(<= |ULTIMATE.start_main_~i~0#1| 3), Black: 20654#(< |ULTIMATE.start_main_~j~1#1| 18), 30502#true, 120#L1051-2true, Black: 19004#(< |ULTIMATE.start_main_~j~1#1| 24), Black: 97938#(< |ULTIMATE.start_main_~i~0#1| 10), Black: 18454#(< |ULTIMATE.start_main_~j~1#1| 26), Black: 97949#(< |ULTIMATE.start_main_~i~0#1| 9), Black: 18729#(< |ULTIMATE.start_main_~j~1#1| 25), Black: 106228#(< |ULTIMATE.start_main_~i~0#1| 8), 47556#true, Black: 17904#(< |ULTIMATE.start_main_~j~1#1| 28), Black: 20104#(< |ULTIMATE.start_main_~j~1#1| 20), Black: 20929#(< |ULTIMATE.start_main_~j~1#1| 17), 266#ULTIMATE.startFINALtrue, 311#L1051-2true, fThread1of1ForFork0InUse, fThread1of1ForFork1InUse, 181054#true]) [2023-11-29 05:09:26,155 INFO L294 olderBase$Statistics]: this new event has 27767 ancestors and is cut-off event [2023-11-29 05:09:26,155 INFO L297 olderBase$Statistics]: existing Event has 27740 ancestors and is cut-off event [2023-11-29 05:09:26,155 INFO L297 olderBase$Statistics]: existing Event has 27740 ancestors and is cut-off event [2023-11-29 05:09:26,155 INFO L297 olderBase$Statistics]: existing Event has 27740 ancestors and is cut-off event [2023-11-29 05:09:35,989 INFO L124 PetriNetUnfolderBase]: 534/30680 cut-off events. [2023-11-29 05:09:35,989 INFO L125 PetriNetUnfolderBase]: For 12612/12724 co-relation queries the response was YES. [2023-11-29 05:09:36,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39085 conditions, 30680 events. 534/30680 cut-off events. For 12612/12724 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 23593 event pairs, 115 based on Foata normal form. 39/30405 useless extension candidates. Maximal degree in co-relation 35754. Up to 560 conditions per place. [2023-11-29 05:09:36,108 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 22 selfloop transitions, 30 changer transitions 0/582 dead transitions. [2023-11-29 05:09:36,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 582 transitions, 3014 flow [2023-11-29 05:09:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 05:09:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 05:09:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 10645 transitions. [2023-11-29 05:09:36,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9387125220458554 [2023-11-29 05:09:36,115 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 10645 transitions. [2023-11-29 05:09:36,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 10645 transitions. [2023-11-29 05:09:36,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:36,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 10645 transitions. [2023-11-29 05:09:36,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 354.8333333333333) internal successors, (10645), 30 states have internal predecessors, (10645), 0 states have call successors, (0), 0 states 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 05:09:36,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 378.0) internal successors, (11718), 31 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states 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 05:09:36,135 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 378.0) internal successors, (11718), 31 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states 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 05:09:36,135 INFO L175 Difference]: Start difference. First operand has 542 places, 565 transitions, 2788 flow. Second operand 30 states and 10645 transitions. [2023-11-29 05:09:36,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 582 transitions, 3014 flow [2023-11-29 05:09:36,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 582 transitions, 3014 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:09:36,184 INFO L231 Difference]: Finished difference. Result has 575 places, 575 transitions, 2940 flow [2023-11-29 05:09:36,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=2788, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2940, PETRI_PLACES=575, PETRI_TRANSITIONS=575} [2023-11-29 05:09:36,185 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 209 predicate places. [2023-11-29 05:09:36,186 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 575 transitions, 2940 flow [2023-11-29 05:09:36,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 355.14285714285717) internal successors, (7458), 21 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states 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 05:09:36,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:36,189 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:36,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 05:09:36,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 05:09:36,389 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:09:36,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:36,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1685090304, now seen corresponding path program 2 times [2023-11-29 05:09:36,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:36,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064722845] [2023-11-29 05:09:36,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:36,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:40,225 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:09:40,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296470598] [2023-11-29 05:09:40,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:09:40,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:40,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:40,228 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:09:40,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:09:53,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:09:53,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:09:53,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:09:54,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:54,683 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 11 treesize of output 7 [2023-11-29 05:09:54,689 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 05:09:54,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:09:54,702 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 05:09:54,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:09:54,721 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 05:09:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4085665 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4085665 trivial. 0 not checked. [2023-11-29 05:09:54,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:54,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:54,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064722845] [2023-11-29 05:09:54,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:09:54,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296470598] [2023-11-29 05:09:54,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296470598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:54,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:54,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:09:54,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291191482] [2023-11-29 05:09:54,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:54,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:09:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:09:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:09:55,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 378 [2023-11-29 05:09:55,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 575 transitions, 2940 flow. Second operand has 6 states, 6 states have (on average 315.6666666666667) internal successors, (1894), 6 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states 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 05:09:55,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:55,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 378 [2023-11-29 05:09:55,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:12:03,788 INFO L124 PetriNetUnfolderBase]: 575/30543 cut-off events. [2023-11-29 05:12:03,788 INFO L125 PetriNetUnfolderBase]: For 14959/15260 co-relation queries the response was YES. [2023-11-29 05:12:03,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48202 conditions, 30543 events. 575/30543 cut-off events. For 14959/15260 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 23269 event pairs, 84 based on Foata normal form. 112/30437 useless extension candidates. Maximal degree in co-relation 44292. Up to 9180 conditions per place. [2023-11-29 05:12:03,929 INFO L140 encePairwiseOnDemand]: 367/378 looper letters, 141 selfloop transitions, 79 changer transitions 0/648 dead transitions. [2023-11-29 05:12:03,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 648 transitions, 3918 flow [2023-11-29 05:12:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:12:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:12:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1938 transitions. [2023-11-29 05:12:03,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8544973544973545 [2023-11-29 05:12:03,933 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1938 transitions. [2023-11-29 05:12:03,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1938 transitions. [2023-11-29 05:12:03,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:12:03,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1938 transitions. [2023-11-29 05:12:03,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states 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 05:12:03,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:12:03,936 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states 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 05:12:03,936 INFO L175 Difference]: Start difference. First operand has 575 places, 575 transitions, 2940 flow. Second operand 6 states and 1938 transitions. [2023-11-29 05:12:03,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 648 transitions, 3918 flow [2023-11-29 05:12:03,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 648 transitions, 3872 flow, removed 5 selfloop flow, removed 18 redundant places. [2023-11-29 05:12:03,993 INFO L231 Difference]: Finished difference. Result has 567 places, 640 transitions, 3792 flow [2023-11-29 05:12:03,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=2894, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3792, PETRI_PLACES=567, PETRI_TRANSITIONS=640} [2023-11-29 05:12:03,994 INFO L281 CegarLoopForPetriNet]: 366 programPoint places, 201 predicate places. [2023-11-29 05:12:03,995 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 640 transitions, 3792 flow [2023-11-29 05:12:03,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 315.6666666666667) internal successors, (1894), 6 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states 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 05:12:03,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:12:03,997 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:12:04,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:12:04,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 05:12:04,198 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-29 05:12:04,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash -119779810, now seen corresponding path program 1 times [2023-11-29 05:12:04,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:04,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783379467] [2023-11-29 05:12:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:04,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:08,070 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:08,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969318275] [2023-11-29 05:12:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:08,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:08,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:08,074 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:08,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28bac836-75e6-4566-8886-b1b748191ab8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process