./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/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_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/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_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/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 edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:55:28,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:55:28,682 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-28 23:55:28,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:55:28,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:55:28,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:55:28,712 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:55:28,713 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:55:28,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:55:28,714 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:55:28,715 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:55:28,715 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:55:28,716 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:55:28,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:55:28,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:55:28,718 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:55:28,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:55:28,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:55:28,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:55:28,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:55:28,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:55:28,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:55:28,723 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-28 23:55:28,723 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:55:28,724 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:55:28,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:55:28,724 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:55:28,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:55:28,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:55:28,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:55:28,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:55:28,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:55:28,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:55:28,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:55:28,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:55:28,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:55:28,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:55:28,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:55:28,728 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:55:28,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:55:28,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:55:28,728 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_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 [2023-11-28 23:55:28,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:55:28,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:55:28,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:55:28,967 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:55:28,967 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:55:28,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2023-11-28 23:55:31,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:55:32,008 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:55:32,008 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2023-11-28 23:55:32,027 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/data/a9e5dca36/095b97c0d5e648ec98a47842e30a579e/FLAG795cd2744 [2023-11-28 23:55:32,041 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/data/a9e5dca36/095b97c0d5e648ec98a47842e30a579e [2023-11-28 23:55:32,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:55:32,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:55:32,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:55:32,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:55:32,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:55:32,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b62b49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32, skipping insertion in model container [2023-11-28 23:55:32,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,114 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:55:32,519 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:55:32,520 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:55:32,521 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:55:32,522 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:55:32,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:55:32,567 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:55:32,605 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:55:32,606 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:55:32,607 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:55:32,608 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:55:32,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:55:32,680 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:55:32,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32 WrapperNode [2023-11-28 23:55:32,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:55:32,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:55:32,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:55:32,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:55:32,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,752 INFO L138 Inliner]: procedures = 273, calls = 39, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 275 [2023-11-28 23:55:32,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:55:32,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:55:32,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:55:32,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:55:32,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,771 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,772 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:55:32,810 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:55:32,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:55:32,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:55:32,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:55:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:32,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:55:32,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:55:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-28 23:55:32,896 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-28 23:55:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:55:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-28 23:55:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:55:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 23:55:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-28 23:55:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-28 23:55:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 23:55:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:55:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:55:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-28 23:55:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:55:32,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:55:32,900 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:55:33,056 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:55:33,059 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:55:33,586 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:55:33,611 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:55:33,611 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-28 23:55:33,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:33 BoogieIcfgContainer [2023-11-28 23:55:33,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:55:33,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:55:33,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:55:33,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:55:33,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:55:32" (1/3) ... [2023-11-28 23:55:33,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c7b1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:55:33, skipping insertion in model container [2023-11-28 23:55:33,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (2/3) ... [2023-11-28 23:55:33,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c7b1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:55:33, skipping insertion in model container [2023-11-28 23:55:33,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:33" (3/3) ... [2023-11-28 23:55:33,622 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_23-evilcollapse_rc.i [2023-11-28 23:55:33,629 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:55:33,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:55:33,638 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-28 23:55:33,638 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:55:33,745 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-28 23:55:33,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 381 places, 390 transitions, 788 flow [2023-11-28 23:55:33,891 INFO L124 PetriNetUnfolderBase]: 16/388 cut-off events. [2023-11-28 23:55:33,892 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:55:33,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 388 events. 16/388 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 685 event pairs, 0 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 309. Up to 2 conditions per place. [2023-11-28 23:55:33,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 381 places, 390 transitions, 788 flow [2023-11-28 23:55:33,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 379 places, 388 transitions, 782 flow [2023-11-28 23:55:33,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:55:33,926 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;@6320e553, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:55:33,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-11-28 23:55:33,933 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:55:33,933 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-11-28 23:55:33,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:55:33,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:33,934 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] [2023-11-28 23:55:33,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:33,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:33,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1963762535, now seen corresponding path program 1 times [2023-11-28 23:55:33,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:33,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291914633] [2023-11-28 23:55:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:33,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:34,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:34,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291914633] [2023-11-28 23:55:34,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291914633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:34,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:34,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:55:34,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053050600] [2023-11-28 23:55:34,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:34,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:34,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:34,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:35,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 390 [2023-11-28 23:55:35,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 388 transitions, 782 flow. Second operand has 6 states, 6 states have (on average 281.3333333333333) internal successors, (1688), 6 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:35,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:35,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 390 [2023-11-28 23:55:35,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:36,120 INFO L124 PetriNetUnfolderBase]: 449/1862 cut-off events. [2023-11-28 23:55:36,121 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-28 23:55:36,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2777 conditions, 1862 events. 449/1862 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 11060 event pairs, 342 based on Foata normal form. 154/1803 useless extension candidates. Maximal degree in co-relation 2484. Up to 862 conditions per place. [2023-11-28 23:55:36,142 INFO L140 encePairwiseOnDemand]: 368/390 looper letters, 88 selfloop transitions, 10 changer transitions 2/376 dead transitions. [2023-11-28 23:55:36,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 376 transitions, 954 flow [2023-11-28 23:55:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:36,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:55:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1790 transitions. [2023-11-28 23:55:36,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7649572649572649 [2023-11-28 23:55:36,164 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1790 transitions. [2023-11-28 23:55:36,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1790 transitions. [2023-11-28 23:55:36,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:36,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1790 transitions. [2023-11-28 23:55:36,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,193 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,195 INFO L175 Difference]: Start difference. First operand has 379 places, 388 transitions, 782 flow. Second operand 6 states and 1790 transitions. [2023-11-28 23:55:36,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 376 transitions, 954 flow [2023-11-28 23:55:36,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 376 transitions, 952 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:55:36,212 INFO L231 Difference]: Finished difference. Result has 380 places, 374 transitions, 772 flow [2023-11-28 23:55:36,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=772, PETRI_PLACES=380, PETRI_TRANSITIONS=374} [2023-11-28 23:55:36,218 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 1 predicate places. [2023-11-28 23:55:36,218 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 374 transitions, 772 flow [2023-11-28 23:55:36,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.3333333333333) internal successors, (1688), 6 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:36,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:36,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:55:36,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:36,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:36,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1897555586, now seen corresponding path program 1 times [2023-11-28 23:55:36,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:36,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537149450] [2023-11-28 23:55:36,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:36,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:36,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537149450] [2023-11-28 23:55:36,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537149450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:36,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:36,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:55:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012483511] [2023-11-28 23:55:36,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:36,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:36,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:37,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 390 [2023-11-28 23:55:37,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 374 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 281.3333333333333) internal successors, (1688), 6 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:37,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 390 [2023-11-28 23:55:37,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:37,732 INFO L124 PetriNetUnfolderBase]: 449/1858 cut-off events. [2023-11-28 23:55:37,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:55:37,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2782 conditions, 1858 events. 449/1858 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 11137 event pairs, 342 based on Foata normal form. 0/1649 useless extension candidates. Maximal degree in co-relation 2607. Up to 862 conditions per place. [2023-11-28 23:55:37,750 INFO L140 encePairwiseOnDemand]: 378/390 looper letters, 88 selfloop transitions, 10 changer transitions 0/372 dead transitions. [2023-11-28 23:55:37,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 372 transitions, 964 flow [2023-11-28 23:55:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:55:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1780 transitions. [2023-11-28 23:55:37,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7606837606837606 [2023-11-28 23:55:37,757 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1780 transitions. [2023-11-28 23:55:37,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1780 transitions. [2023-11-28 23:55:37,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:37,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1780 transitions. [2023-11-28 23:55:37,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 296.6666666666667) internal successors, (1780), 6 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,773 INFO L175 Difference]: Start difference. First operand has 380 places, 374 transitions, 772 flow. Second operand 6 states and 1780 transitions. [2023-11-28 23:55:37,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 372 transitions, 964 flow [2023-11-28 23:55:37,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 372 transitions, 944 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:55:37,783 INFO L231 Difference]: Finished difference. Result has 376 places, 372 transitions, 768 flow [2023-11-28 23:55:37,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=768, PETRI_PLACES=376, PETRI_TRANSITIONS=372} [2023-11-28 23:55:37,785 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, -3 predicate places. [2023-11-28 23:55:37,785 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 372 transitions, 768 flow [2023-11-28 23:55:37,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.3333333333333) internal successors, (1688), 6 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:37,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:37,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:55:37,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:37,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:37,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1608025858, now seen corresponding path program 1 times [2023-11-28 23:55:37,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:37,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120064643] [2023-11-28 23:55:37,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:37,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:37,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:37,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120064643] [2023-11-28 23:55:37,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120064643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:37,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:37,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:55:37,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327401225] [2023-11-28 23:55:37,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:37,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:55:37,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:55:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:37,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 390 [2023-11-28 23:55:37,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 372 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:37,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 390 [2023-11-28 23:55:37,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:37,972 INFO L124 PetriNetUnfolderBase]: 29/683 cut-off events. [2023-11-28 23:55:37,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:55:37,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 683 events. 29/683 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2227 event pairs, 18 based on Foata normal form. 1/629 useless extension candidates. Maximal degree in co-relation 522. Up to 45 conditions per place. [2023-11-28 23:55:37,977 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 11 selfloop transitions, 2 changer transitions 0/373 dead transitions. [2023-11-28 23:55:37,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 373 transitions, 796 flow [2023-11-28 23:55:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:55:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:55:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1118 transitions. [2023-11-28 23:55:37,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2023-11-28 23:55:37,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1118 transitions. [2023-11-28 23:55:37,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1118 transitions. [2023-11-28 23:55:37,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:37,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1118 transitions. [2023-11-28 23:55:37,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,991 INFO L175 Difference]: Start difference. First operand has 376 places, 372 transitions, 768 flow. Second operand 3 states and 1118 transitions. [2023-11-28 23:55:37,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 373 transitions, 796 flow [2023-11-28 23:55:37,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 373 transitions, 776 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:55:38,000 INFO L231 Difference]: Finished difference. Result has 374 places, 373 transitions, 760 flow [2023-11-28 23:55:38,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=374, PETRI_TRANSITIONS=373} [2023-11-28 23:55:38,002 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, -5 predicate places. [2023-11-28 23:55:38,002 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 373 transitions, 760 flow [2023-11-28 23:55:38,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:38,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:38,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:55:38,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:38,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash 157244813, now seen corresponding path program 1 times [2023-11-28 23:55:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:38,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171264964] [2023-11-28 23:55:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:38,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:38,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:38,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621315426] [2023-11-28 23:55:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:38,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:38,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:38,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:38,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:55:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 23:55:38,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:38,248 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 [2023-11-28 23:55:38,271 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 [2023-11-28 23:55:38,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:38,306 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 [2023-11-28 23:55:38,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:38,346 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 [2023-11-28 23:55:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:38,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:38,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:38,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171264964] [2023-11-28 23:55:38,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:38,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621315426] [2023-11-28 23:55:38,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621315426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:38,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:38,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:55:38,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276121643] [2023-11-28 23:55:38,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:38,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:55:38,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:38,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:55:38,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:55:38,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 390 [2023-11-28 23:55:38,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 373 transitions, 760 flow. Second operand has 8 states, 8 states have (on average 279.25) internal successors, (2234), 8 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:38,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 390 [2023-11-28 23:55:38,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:39,319 INFO L124 PetriNetUnfolderBase]: 450/1981 cut-off events. [2023-11-28 23:55:39,319 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:55:39,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 1981 events. 450/1981 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 11492 event pairs, 342 based on Foata normal form. 0/1768 useless extension candidates. Maximal degree in co-relation 2761. Up to 888 conditions per place. [2023-11-28 23:55:39,339 INFO L140 encePairwiseOnDemand]: 380/390 looper letters, 93 selfloop transitions, 9 changer transitions 0/372 dead transitions. [2023-11-28 23:55:39,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 372 transitions, 962 flow [2023-11-28 23:55:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:55:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:55:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2596 transitions. [2023-11-28 23:55:39,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7396011396011396 [2023-11-28 23:55:39,347 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2596 transitions. [2023-11-28 23:55:39,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2596 transitions. [2023-11-28 23:55:39,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:39,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2596 transitions. [2023-11-28 23:55:39,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 288.44444444444446) internal successors, (2596), 9 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,368 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,368 INFO L175 Difference]: Start difference. First operand has 374 places, 373 transitions, 760 flow. Second operand 9 states and 2596 transitions. [2023-11-28 23:55:39,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 372 transitions, 962 flow [2023-11-28 23:55:39,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 372 transitions, 960 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:55:39,377 INFO L231 Difference]: Finished difference. Result has 380 places, 372 transitions, 774 flow [2023-11-28 23:55:39,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=774, PETRI_PLACES=380, PETRI_TRANSITIONS=372} [2023-11-28 23:55:39,378 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 1 predicate places. [2023-11-28 23:55:39,379 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 372 transitions, 774 flow [2023-11-28 23:55:39,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 279.25) internal successors, (2234), 8 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:39,380 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] [2023-11-28 23:55:39,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:39,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:39,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:39,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:39,596 INFO L85 PathProgramCache]: Analyzing trace with hash -906185028, now seen corresponding path program 1 times [2023-11-28 23:55:39,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:39,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90583268] [2023-11-28 23:55:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:39,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:39,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:39,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90583268] [2023-11-28 23:55:39,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90583268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:39,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:39,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:55:39,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090296484] [2023-11-28 23:55:39,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:39,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:55:39,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:55:39,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:39,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 390 [2023-11-28 23:55:39,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 372 transitions, 774 flow. Second operand has 3 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:39,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 390 [2023-11-28 23:55:39,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:39,836 INFO L124 PetriNetUnfolderBase]: 29/871 cut-off events. [2023-11-28 23:55:39,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:55:39,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 871 events. 29/871 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2517 event pairs, 18 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 567. Up to 49 conditions per place. [2023-11-28 23:55:39,843 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 11 selfloop transitions, 2 changer transitions 0/373 dead transitions. [2023-11-28 23:55:39,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 373 transitions, 802 flow [2023-11-28 23:55:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:55:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:55:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1118 transitions. [2023-11-28 23:55:39,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2023-11-28 23:55:39,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1118 transitions. [2023-11-28 23:55:39,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1118 transitions. [2023-11-28 23:55:39,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:39,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1118 transitions. [2023-11-28 23:55:39,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,854 INFO L175 Difference]: Start difference. First operand has 380 places, 372 transitions, 774 flow. Second operand 3 states and 1118 transitions. [2023-11-28 23:55:39,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 373 transitions, 802 flow [2023-11-28 23:55:39,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 373 transitions, 784 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-28 23:55:39,864 INFO L231 Difference]: Finished difference. Result has 375 places, 373 transitions, 768 flow [2023-11-28 23:55:39,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=768, PETRI_PLACES=375, PETRI_TRANSITIONS=373} [2023-11-28 23:55:39,866 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, -4 predicate places. [2023-11-28 23:55:39,866 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 373 transitions, 768 flow [2023-11-28 23:55:39,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:39,867 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] [2023-11-28 23:55:39,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:55:39,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:39,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1595381486, now seen corresponding path program 1 times [2023-11-28 23:55:39,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:39,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498838217] [2023-11-28 23:55:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:39,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:39,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201291353] [2023-11-28 23:55:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:39,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:39,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:39,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:39,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:55:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:40,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:55:40,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:40,100 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 [2023-11-28 23:55:40,110 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 [2023-11-28 23:55:40,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:40,130 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 [2023-11-28 23:55:40,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:40,160 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 [2023-11-28 23:55:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:40,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:40,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:40,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498838217] [2023-11-28 23:55:40,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:40,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201291353] [2023-11-28 23:55:40,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201291353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:40,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:40,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:55:40,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674907770] [2023-11-28 23:55:40,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:40,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:40,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:40,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:41,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 390 [2023-11-28 23:55:41,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 373 transitions, 768 flow. Second operand has 6 states, 6 states have (on average 320.5) internal successors, (1923), 6 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:41,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:41,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 390 [2023-11-28 23:55:41,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:41,258 INFO L124 PetriNetUnfolderBase]: 75/1187 cut-off events. [2023-11-28 23:55:41,259 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-28 23:55:41,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 1187 events. 75/1187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4614 event pairs, 42 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 1049. Up to 267 conditions per place. [2023-11-28 23:55:41,267 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 58 selfloop transitions, 5 changer transitions 0/372 dead transitions. [2023-11-28 23:55:41,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 372 transitions, 892 flow [2023-11-28 23:55:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:41,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:55:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1960 transitions. [2023-11-28 23:55:41,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8376068376068376 [2023-11-28 23:55:41,274 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1960 transitions. [2023-11-28 23:55:41,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1960 transitions. [2023-11-28 23:55:41,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:41,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1960 transitions. [2023-11-28 23:55:41,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.6666666666667) internal successors, (1960), 6 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:41,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:41,284 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:41,284 INFO L175 Difference]: Start difference. First operand has 375 places, 373 transitions, 768 flow. Second operand 6 states and 1960 transitions. [2023-11-28 23:55:41,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 372 transitions, 892 flow [2023-11-28 23:55:41,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 372 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:55:41,290 INFO L231 Difference]: Finished difference. Result has 378 places, 372 transitions, 774 flow [2023-11-28 23:55:41,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=378, PETRI_TRANSITIONS=372} [2023-11-28 23:55:41,291 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, -1 predicate places. [2023-11-28 23:55:41,291 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 372 transitions, 774 flow [2023-11-28 23:55:41,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 320.5) internal successors, (1923), 6 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:41,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:41,293 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] [2023-11-28 23:55:41,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:55:41,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:41,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:41,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:41,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1418968818, now seen corresponding path program 1 times [2023-11-28 23:55:41,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:41,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873071311] [2023-11-28 23:55:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:41,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:41,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:41,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142123538] [2023-11-28 23:55:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:41,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:41,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:41,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:41,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:55:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:41,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:55:41,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:41,753 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 [2023-11-28 23:55:41,763 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 [2023-11-28 23:55:41,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:41,783 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 [2023-11-28 23:55:41,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:41,815 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 [2023-11-28 23:55:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:41,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:41,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:41,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873071311] [2023-11-28 23:55:41,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:41,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142123538] [2023-11-28 23:55:41,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142123538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:41,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:41,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:55:41,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791827421] [2023-11-28 23:55:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:41,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:41,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:42,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 390 [2023-11-28 23:55:42,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 372 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:42,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:42,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 390 [2023-11-28 23:55:42,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:42,805 INFO L124 PetriNetUnfolderBase]: 450/2163 cut-off events. [2023-11-28 23:55:42,805 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-28 23:55:42,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3235 conditions, 2163 events. 450/2163 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12171 event pairs, 342 based on Foata normal form. 0/1950 useless extension candidates. Maximal degree in co-relation 2802. Up to 976 conditions per place. [2023-11-28 23:55:42,824 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 95 selfloop transitions, 5 changer transitions 0/371 dead transitions. [2023-11-28 23:55:42,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 371 transitions, 972 flow [2023-11-28 23:55:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:55:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1775 transitions. [2023-11-28 23:55:42,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7585470085470085 [2023-11-28 23:55:42,830 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1775 transitions. [2023-11-28 23:55:42,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1775 transitions. [2023-11-28 23:55:42,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:42,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1775 transitions. [2023-11-28 23:55:42,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 295.8333333333333) internal successors, (1775), 6 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:42,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:42,844 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:42,844 INFO L175 Difference]: Start difference. First operand has 378 places, 372 transitions, 774 flow. Second operand 6 states and 1775 transitions. [2023-11-28 23:55:42,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 371 transitions, 972 flow [2023-11-28 23:55:42,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 371 transitions, 962 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:55:42,852 INFO L231 Difference]: Finished difference. Result has 377 places, 371 transitions, 772 flow [2023-11-28 23:55:42,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=772, PETRI_PLACES=377, PETRI_TRANSITIONS=371} [2023-11-28 23:55:42,854 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, -2 predicate places. [2023-11-28 23:55:42,854 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 371 transitions, 772 flow [2023-11-28 23:55:42,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:42,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:42,856 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] [2023-11-28 23:55:42,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:55:43,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:43,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:43,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:43,062 INFO L85 PathProgramCache]: Analyzing trace with hash -918140014, now seen corresponding path program 1 times [2023-11-28 23:55:43,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:43,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952098793] [2023-11-28 23:55:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:43,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:43,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:43,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559907780] [2023-11-28 23:55:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:43,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:43,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:43,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:43,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:55:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:43,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:55:43,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:43,284 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 [2023-11-28 23:55:43,294 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 [2023-11-28 23:55:43,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:43,312 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 [2023-11-28 23:55:43,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:43,338 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 [2023-11-28 23:55:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:43,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:43,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952098793] [2023-11-28 23:55:43,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559907780] [2023-11-28 23:55:43,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559907780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:43,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:43,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:55:43,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666745635] [2023-11-28 23:55:43,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:43,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:43,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:43,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:43,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:43,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 390 [2023-11-28 23:55:43,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 371 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 289.0) internal successors, (1734), 6 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:43,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:43,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 390 [2023-11-28 23:55:43,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:44,397 INFO L124 PetriNetUnfolderBase]: 450/2159 cut-off events. [2023-11-28 23:55:44,397 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-28 23:55:44,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3215 conditions, 2159 events. 450/2159 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12136 event pairs, 342 based on Foata normal form. 0/1950 useless extension candidates. Maximal degree in co-relation 2818. Up to 960 conditions per place. [2023-11-28 23:55:44,411 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 91 selfloop transitions, 5 changer transitions 0/370 dead transitions. [2023-11-28 23:55:44,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 370 transitions, 962 flow [2023-11-28 23:55:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:55:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1795 transitions. [2023-11-28 23:55:44,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7670940170940171 [2023-11-28 23:55:44,416 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1795 transitions. [2023-11-28 23:55:44,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1795 transitions. [2023-11-28 23:55:44,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:44,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1795 transitions. [2023-11-28 23:55:44,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 299.1666666666667) internal successors, (1795), 6 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:44,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:44,425 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:44,425 INFO L175 Difference]: Start difference. First operand has 377 places, 371 transitions, 772 flow. Second operand 6 states and 1795 transitions. [2023-11-28 23:55:44,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 370 transitions, 962 flow [2023-11-28 23:55:44,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 370 transitions, 952 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:55:44,432 INFO L231 Difference]: Finished difference. Result has 376 places, 370 transitions, 770 flow [2023-11-28 23:55:44,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=770, PETRI_PLACES=376, PETRI_TRANSITIONS=370} [2023-11-28 23:55:44,433 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, -3 predicate places. [2023-11-28 23:55:44,434 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 370 transitions, 770 flow [2023-11-28 23:55:44,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 289.0) internal successors, (1734), 6 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:44,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:44,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:44,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:55:44,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-28 23:55:44,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:44,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:44,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1309509640, now seen corresponding path program 1 times [2023-11-28 23:55:44,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:44,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416992057] [2023-11-28 23:55:44,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:44,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:44,665 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:44,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890593287] [2023-11-28 23:55:44,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:44,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:44,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:44,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:44,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:55:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:44,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-28 23:55:44,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:44,997 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 [2023-11-28 23:55:45,027 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 [2023-11-28 23:55:45,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:45,057 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 [2023-11-28 23:55:45,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:45,089 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 [2023-11-28 23:55:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:45,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:45,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:45,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416992057] [2023-11-28 23:55:45,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:45,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890593287] [2023-11-28 23:55:45,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890593287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:45,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:45,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-28 23:55:45,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433269710] [2023-11-28 23:55:45,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:45,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 23:55:45,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:45,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 23:55:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:55:46,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 390 [2023-11-28 23:55:46,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 370 transitions, 770 flow. Second operand has 13 states, 13 states have (on average 269.9230769230769) internal successors, (3509), 13 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:46,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:46,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 390 [2023-11-28 23:55:46,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:47,387 INFO L124 PetriNetUnfolderBase]: 1237/3986 cut-off events. [2023-11-28 23:55:47,387 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:55:47,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6236 conditions, 3986 events. 1237/3986 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 29837 event pairs, 1026 based on Foata normal form. 0/3595 useless extension candidates. Maximal degree in co-relation 5827. Up to 1978 conditions per place. [2023-11-28 23:55:47,416 INFO L140 encePairwiseOnDemand]: 370/390 looper letters, 105 selfloop transitions, 19 changer transitions 0/380 dead transitions. [2023-11-28 23:55:47,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 380 transitions, 1038 flow [2023-11-28 23:55:47,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 23:55:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-28 23:55:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4381 transitions. [2023-11-28 23:55:47,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7020833333333333 [2023-11-28 23:55:47,430 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4381 transitions. [2023-11-28 23:55:47,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4381 transitions. [2023-11-28 23:55:47,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:47,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4381 transitions. [2023-11-28 23:55:47,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 273.8125) internal successors, (4381), 16 states have internal predecessors, (4381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:47,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 390.0) internal successors, (6630), 17 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:47,459 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 390.0) internal successors, (6630), 17 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:47,459 INFO L175 Difference]: Start difference. First operand has 376 places, 370 transitions, 770 flow. Second operand 16 states and 4381 transitions. [2023-11-28 23:55:47,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 380 transitions, 1038 flow [2023-11-28 23:55:47,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 380 transitions, 1028 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:55:47,468 INFO L231 Difference]: Finished difference. Result has 386 places, 370 transitions, 802 flow [2023-11-28 23:55:47,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=802, PETRI_PLACES=386, PETRI_TRANSITIONS=370} [2023-11-28 23:55:47,469 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 7 predicate places. [2023-11-28 23:55:47,470 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 370 transitions, 802 flow [2023-11-28 23:55:47,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 269.9230769230769) internal successors, (3509), 13 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:47,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:47,471 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] [2023-11-28 23:55:47,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:55:47,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:47,672 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:47,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash -633479742, now seen corresponding path program 1 times [2023-11-28 23:55:47,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:47,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782904125] [2023-11-28 23:55:47,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:47,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:47,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:47,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683491566] [2023-11-28 23:55:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:47,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:47,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:47,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:47,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:55:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:47,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:55:47,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:47,946 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 [2023-11-28 23:55:47,954 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 [2023-11-28 23:55:47,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:47,970 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 [2023-11-28 23:55:47,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:47,989 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 [2023-11-28 23:55:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:48,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:48,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:48,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782904125] [2023-11-28 23:55:48,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:48,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683491566] [2023-11-28 23:55:48,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683491566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:48,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:48,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:55:48,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205340921] [2023-11-28 23:55:48,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:48,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:48,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:48,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:48,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:48,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 390 [2023-11-28 23:55:48,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 370 transitions, 802 flow. Second operand has 6 states, 6 states have (on average 285.5) internal successors, (1713), 6 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:48,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:48,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 390 [2023-11-28 23:55:48,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:48,886 INFO L124 PetriNetUnfolderBase]: 450/2151 cut-off events. [2023-11-28 23:55:48,887 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-28 23:55:48,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3287 conditions, 2151 events. 450/2151 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12125 event pairs, 342 based on Foata normal form. 0/1950 useless extension candidates. Maximal degree in co-relation 2635. Up to 980 conditions per place. [2023-11-28 23:55:48,902 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 96 selfloop transitions, 5 changer transitions 0/369 dead transitions. [2023-11-28 23:55:48,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 369 transitions, 1002 flow [2023-11-28 23:55:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:55:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1770 transitions. [2023-11-28 23:55:48,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7564102564102564 [2023-11-28 23:55:48,908 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1770 transitions. [2023-11-28 23:55:48,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1770 transitions. [2023-11-28 23:55:48,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:48,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1770 transitions. [2023-11-28 23:55:48,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:48,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:48,920 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:48,920 INFO L175 Difference]: Start difference. First operand has 386 places, 370 transitions, 802 flow. Second operand 6 states and 1770 transitions. [2023-11-28 23:55:48,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 369 transitions, 1002 flow [2023-11-28 23:55:48,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 369 transitions, 966 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-28 23:55:48,929 INFO L231 Difference]: Finished difference. Result has 376 places, 369 transitions, 774 flow [2023-11-28 23:55:48,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=376, PETRI_TRANSITIONS=369} [2023-11-28 23:55:48,930 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, -3 predicate places. [2023-11-28 23:55:48,931 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 369 transitions, 774 flow [2023-11-28 23:55:48,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 285.5) internal successors, (1713), 6 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:48,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:48,932 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] [2023-11-28 23:55:48,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:55:49,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:49,133 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:49,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash -236407044, now seen corresponding path program 1 times [2023-11-28 23:55:49,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:49,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460049556] [2023-11-28 23:55:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:49,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:49,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:49,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259157216] [2023-11-28 23:55:49,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:49,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:49,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:49,163 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:49,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:55:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:49,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:55:49,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:49,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:49,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:49,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460049556] [2023-11-28 23:55:49,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:49,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259157216] [2023-11-28 23:55:49,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259157216] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:49,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:55:49,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-28 23:55:49,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991113660] [2023-11-28 23:55:49,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:49,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:55:49,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:49,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:55:49,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:55:49,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 390 [2023-11-28 23:55:49,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 369 transitions, 774 flow. Second operand has 8 states, 8 states have (on average 366.75) internal successors, (2934), 8 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:49,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:49,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 390 [2023-11-28 23:55:49,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:49,939 INFO L124 PetriNetUnfolderBase]: 29/1037 cut-off events. [2023-11-28 23:55:49,939 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-28 23:55:49,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 1037 events. 29/1037 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2072 event pairs, 18 based on Foata normal form. 4/1000 useless extension candidates. Maximal degree in co-relation 596. Up to 49 conditions per place. [2023-11-28 23:55:49,945 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 15 selfloop transitions, 9 changer transitions 0/377 dead transitions. [2023-11-28 23:55:49,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 377 transitions, 840 flow [2023-11-28 23:55:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:55:49,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:55:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3311 transitions. [2023-11-28 23:55:49,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9433048433048433 [2023-11-28 23:55:49,955 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3311 transitions. [2023-11-28 23:55:49,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3311 transitions. [2023-11-28 23:55:49,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:49,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3311 transitions. [2023-11-28 23:55:49,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 367.8888888888889) internal successors, (3311), 9 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:49,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:49,976 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:49,976 INFO L175 Difference]: Start difference. First operand has 376 places, 369 transitions, 774 flow. Second operand 9 states and 3311 transitions. [2023-11-28 23:55:49,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 377 transitions, 840 flow [2023-11-28 23:55:49,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 377 transitions, 830 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:55:49,986 INFO L231 Difference]: Finished difference. Result has 382 places, 375 transitions, 814 flow [2023-11-28 23:55:49,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=814, PETRI_PLACES=382, PETRI_TRANSITIONS=375} [2023-11-28 23:55:49,987 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 3 predicate places. [2023-11-28 23:55:49,988 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 375 transitions, 814 flow [2023-11-28 23:55:49,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 366.75) internal successors, (2934), 8 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:49,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:49,989 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] [2023-11-28 23:55:49,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:55:50,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:50,190 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:50,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:50,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1092755716, now seen corresponding path program 2 times [2023-11-28 23:55:50,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:50,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623124969] [2023-11-28 23:55:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:50,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:50,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:50,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287093419] [2023-11-28 23:55:50,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:55:50,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:50,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:50,262 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:50,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:55:50,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:55:50,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:50,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:55:50,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:50,576 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 [2023-11-28 23:55:50,589 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 [2023-11-28 23:55:50,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:50,608 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 [2023-11-28 23:55:50,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:50,641 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 [2023-11-28 23:55:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-28 23:55:50,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:50,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623124969] [2023-11-28 23:55:50,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287093419] [2023-11-28 23:55:50,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287093419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:50,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:50,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:55:50,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131294015] [2023-11-28 23:55:50,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:50,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:50,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:51,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 390 [2023-11-28 23:55:51,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 375 transitions, 814 flow. Second operand has 6 states, 6 states have (on average 314.3333333333333) internal successors, (1886), 6 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:51,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:51,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 390 [2023-11-28 23:55:51,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:51,818 INFO L124 PetriNetUnfolderBase]: 75/1355 cut-off events. [2023-11-28 23:55:51,818 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-28 23:55:51,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 1355 events. 75/1355 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4156 event pairs, 42 based on Foata normal form. 0/1272 useless extension candidates. Maximal degree in co-relation 1183. Up to 314 conditions per place. [2023-11-28 23:55:51,823 INFO L140 encePairwiseOnDemand]: 378/390 looper letters, 61 selfloop transitions, 10 changer transitions 0/373 dead transitions. [2023-11-28 23:55:51,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 373 transitions, 952 flow [2023-11-28 23:55:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:55:51,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1915 transitions. [2023-11-28 23:55:51,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8183760683760684 [2023-11-28 23:55:51,828 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1915 transitions. [2023-11-28 23:55:51,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1915 transitions. [2023-11-28 23:55:51,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:51,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1915 transitions. [2023-11-28 23:55:51,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.1666666666667) internal successors, (1915), 6 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:51,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:51,835 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:51,835 INFO L175 Difference]: Start difference. First operand has 382 places, 375 transitions, 814 flow. Second operand 6 states and 1915 transitions. [2023-11-28 23:55:51,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 373 transitions, 952 flow [2023-11-28 23:55:51,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 373 transitions, 946 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-28 23:55:51,841 INFO L231 Difference]: Finished difference. Result has 384 places, 373 transitions, 824 flow [2023-11-28 23:55:51,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=824, PETRI_PLACES=384, PETRI_TRANSITIONS=373} [2023-11-28 23:55:51,842 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 5 predicate places. [2023-11-28 23:55:51,842 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 373 transitions, 824 flow [2023-11-28 23:55:51,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 314.3333333333333) internal successors, (1886), 6 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:51,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:51,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:51,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:55:52,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:52,044 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:52,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash -754368759, now seen corresponding path program 1 times [2023-11-28 23:55:52,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:52,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084922862] [2023-11-28 23:55:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:52,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:52,102 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:52,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115230327] [2023-11-28 23:55:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:52,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:52,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:52,104 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:52,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:55:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:52,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:55:52,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:52,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:53,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:53,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084922862] [2023-11-28 23:55:53,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:53,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115230327] [2023-11-28 23:55:53,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115230327] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:53,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:55:53,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-28 23:55:53,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204569671] [2023-11-28 23:55:53,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:53,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 23:55:53,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:53,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 23:55:53,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:55:53,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 390 [2023-11-28 23:55:53,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 373 transitions, 824 flow. Second operand has 16 states, 16 states have (on average 366.875) internal successors, (5870), 16 states have internal predecessors, (5870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:53,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:53,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 390 [2023-11-28 23:55:53,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:53,898 INFO L124 PetriNetUnfolderBase]: 29/1763 cut-off events. [2023-11-28 23:55:53,898 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-28 23:55:53,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 1763 events. 29/1763 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2053 event pairs, 18 based on Foata normal form. 8/1732 useless extension candidates. Maximal degree in co-relation 1553. Up to 49 conditions per place. [2023-11-28 23:55:53,903 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 19 selfloop transitions, 21 changer transitions 0/391 dead transitions. [2023-11-28 23:55:53,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 391 transitions, 992 flow [2023-11-28 23:55:53,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 23:55:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-28 23:55:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7709 transitions. [2023-11-28 23:55:53,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9412698412698413 [2023-11-28 23:55:53,919 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7709 transitions. [2023-11-28 23:55:53,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7709 transitions. [2023-11-28 23:55:53,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:53,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7709 transitions. [2023-11-28 23:55:53,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 367.0952380952381) internal successors, (7709), 21 states have internal predecessors, (7709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:53,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 390.0) internal successors, (8580), 22 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:53,949 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 390.0) internal successors, (8580), 22 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:53,949 INFO L175 Difference]: Start difference. First operand has 384 places, 373 transitions, 824 flow. Second operand 21 states and 7709 transitions. [2023-11-28 23:55:53,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 391 transitions, 992 flow [2023-11-28 23:55:53,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 391 transitions, 972 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:55:53,958 INFO L231 Difference]: Finished difference. Result has 404 places, 386 transitions, 934 flow [2023-11-28 23:55:53,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=934, PETRI_PLACES=404, PETRI_TRANSITIONS=386} [2023-11-28 23:55:53,959 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 25 predicate places. [2023-11-28 23:55:53,959 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 386 transitions, 934 flow [2023-11-28 23:55:53,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 366.875) internal successors, (5870), 16 states have internal predecessors, (5870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:53,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:53,960 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, 1, 1, 1, 1] [2023-11-28 23:55:53,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:55:54,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 23:55:54,161 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:54,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2086072073, now seen corresponding path program 2 times [2023-11-28 23:55:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974881021] [2023-11-28 23:55:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:54,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998588282] [2023-11-28 23:55:54,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:55:54,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:54,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:54,292 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:54,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:55:54,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:55:54,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:54,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:55:54,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:54,787 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 [2023-11-28 23:55:54,794 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 [2023-11-28 23:55:54,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:54,809 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 [2023-11-28 23:55:54,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:54,830 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 [2023-11-28 23:55:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2023-11-28 23:55:54,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974881021] [2023-11-28 23:55:54,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998588282] [2023-11-28 23:55:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998588282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:54,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:54,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:55:54,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265543573] [2023-11-28 23:55:54,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:54,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:54,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:54,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:55,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 390 [2023-11-28 23:55:55,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 386 transitions, 934 flow. Second operand has 6 states, 6 states have (on average 323.3333333333333) internal successors, (1940), 6 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:55,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:55,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 390 [2023-11-28 23:55:55,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:56,208 INFO L124 PetriNetUnfolderBase]: 187/2548 cut-off events. [2023-11-28 23:55:56,208 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-28 23:55:56,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3474 conditions, 2548 events. 187/2548 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8077 event pairs, 126 based on Foata normal form. 0/2391 useless extension candidates. Maximal degree in co-relation 2329. Up to 695 conditions per place. [2023-11-28 23:55:56,220 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 58 selfloop transitions, 5 changer transitions 0/385 dead transitions. [2023-11-28 23:55:56,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 385 transitions, 1058 flow [2023-11-28 23:55:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:56,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:55:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1960 transitions. [2023-11-28 23:55:56,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8376068376068376 [2023-11-28 23:55:56,223 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1960 transitions. [2023-11-28 23:55:56,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1960 transitions. [2023-11-28 23:55:56,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:56,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1960 transitions. [2023-11-28 23:55:56,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.6666666666667) internal successors, (1960), 6 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:56,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:56,229 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:56,229 INFO L175 Difference]: Start difference. First operand has 404 places, 386 transitions, 934 flow. Second operand 6 states and 1960 transitions. [2023-11-28 23:55:56,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 385 transitions, 1058 flow [2023-11-28 23:55:56,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 385 transitions, 1034 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-28 23:55:56,237 INFO L231 Difference]: Finished difference. Result has 402 places, 385 transitions, 918 flow [2023-11-28 23:55:56,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=918, PETRI_PLACES=402, PETRI_TRANSITIONS=385} [2023-11-28 23:55:56,238 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 23 predicate places. [2023-11-28 23:55:56,238 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 385 transitions, 918 flow [2023-11-28 23:55:56,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 323.3333333333333) internal successors, (1940), 6 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:56,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:56,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:56,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:55:56,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:55:56,439 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:55:56,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash 163281996, now seen corresponding path program 1 times [2023-11-28 23:55:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:56,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010452929] [2023-11-28 23:55:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:56,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:56,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:55:56,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583362300] [2023-11-28 23:55:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:56,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:56,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:56,546 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:56,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:55:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:57,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 23:55:57,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:58,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:58,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010452929] [2023-11-28 23:55:58,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:55:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583362300] [2023-11-28 23:55:58,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583362300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:58,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:55:58,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-28 23:55:58,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527575447] [2023-11-28 23:55:58,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:58,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-28 23:55:58,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:58,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-28 23:55:58,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-28 23:55:58,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 390 [2023-11-28 23:55:58,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 385 transitions, 918 flow. Second operand has 32 states, 32 states have (on average 366.9375) internal successors, (11742), 32 states have internal predecessors, (11742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:58,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:58,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 390 [2023-11-28 23:55:58,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:00,413 INFO L124 PetriNetUnfolderBase]: 29/3218 cut-off events. [2023-11-28 23:56:00,414 INFO L125 PetriNetUnfolderBase]: For 566/566 co-relation queries the response was YES. [2023-11-28 23:56:00,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 3218 events. 29/3218 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2064 event pairs, 18 based on Foata normal form. 16/3196 useless extension candidates. Maximal degree in co-relation 3374. Up to 52 conditions per place. [2023-11-28 23:56:00,420 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 27 selfloop transitions, 45 changer transitions 0/422 dead transitions. [2023-11-28 23:56:00,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 422 transitions, 1334 flow [2023-11-28 23:56:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-28 23:56:00,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-28 23:56:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 16505 transitions. [2023-11-28 23:56:00,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9404558404558404 [2023-11-28 23:56:00,437 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 16505 transitions. [2023-11-28 23:56:00,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 16505 transitions. [2023-11-28 23:56:00,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:00,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 16505 transitions. [2023-11-28 23:56:00,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 366.77777777777777) internal successors, (16505), 45 states have internal predecessors, (16505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:00,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 390.0) internal successors, (17940), 46 states have internal predecessors, (17940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:00,486 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 390.0) internal successors, (17940), 46 states have internal predecessors, (17940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:00,487 INFO L175 Difference]: Start difference. First operand has 402 places, 385 transitions, 918 flow. Second operand 45 states and 16505 transitions. [2023-11-28 23:56:00,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 422 transitions, 1334 flow [2023-11-28 23:56:00,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 422 transitions, 1324 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:56:00,498 INFO L231 Difference]: Finished difference. Result has 450 places, 410 transitions, 1210 flow [2023-11-28 23:56:00,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1210, PETRI_PLACES=450, PETRI_TRANSITIONS=410} [2023-11-28 23:56:00,500 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 71 predicate places. [2023-11-28 23:56:00,500 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 410 transitions, 1210 flow [2023-11-28 23:56:00,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 366.9375) internal successors, (11742), 32 states have internal predecessors, (11742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:00,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:00,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:00,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:56:00,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 23:56:00,703 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:56:00,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:00,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1248599116, now seen corresponding path program 2 times [2023-11-28 23:56:00,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:00,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170451554] [2023-11-28 23:56:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:00,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:00,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:56:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092383061] [2023-11-28 23:56:00,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:56:00,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:00,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:00,911 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:00,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:56:01,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:56:01,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:56:01,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:56:01,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:01,843 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 [2023-11-28 23:56:01,850 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 [2023-11-28 23:56:01,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:01,866 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 [2023-11-28 23:56:01,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:01,889 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 [2023-11-28 23:56:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2023-11-28 23:56:01,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:01,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:01,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170451554] [2023-11-28 23:56:01,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:56:01,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092383061] [2023-11-28 23:56:01,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092383061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:01,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:01,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:56:01,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556658536] [2023-11-28 23:56:01,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:01,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:56:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:01,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:56:01,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:56:02,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 390 [2023-11-28 23:56:02,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 410 transitions, 1210 flow. Second operand has 6 states, 6 states have (on average 288.1666666666667) internal successors, (1729), 6 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:02,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:02,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 390 [2023-11-28 23:56:02,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:05,790 INFO L124 PetriNetUnfolderBase]: 1237/6348 cut-off events. [2023-11-28 23:56:05,790 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2023-11-28 23:56:05,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9884 conditions, 6348 events. 1237/6348 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 29584 event pairs, 1026 based on Foata normal form. 0/5965 useless extension candidates. Maximal degree in co-relation 7534. Up to 2942 conditions per place. [2023-11-28 23:56:05,815 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 96 selfloop transitions, 5 changer transitions 0/409 dead transitions. [2023-11-28 23:56:05,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 409 transitions, 1410 flow [2023-11-28 23:56:05,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:56:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:56:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1770 transitions. [2023-11-28 23:56:05,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7564102564102564 [2023-11-28 23:56:05,817 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1770 transitions. [2023-11-28 23:56:05,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1770 transitions. [2023-11-28 23:56:05,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:05,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1770 transitions. [2023-11-28 23:56:05,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:05,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:05,821 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:05,821 INFO L175 Difference]: Start difference. First operand has 450 places, 410 transitions, 1210 flow. Second operand 6 states and 1770 transitions. [2023-11-28 23:56:05,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 409 transitions, 1410 flow [2023-11-28 23:56:05,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 409 transitions, 1354 flow, removed 10 selfloop flow, removed 18 redundant places. [2023-11-28 23:56:05,834 INFO L231 Difference]: Finished difference. Result has 436 places, 409 transitions, 1162 flow [2023-11-28 23:56:05,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1162, PETRI_PLACES=436, PETRI_TRANSITIONS=409} [2023-11-28 23:56:05,835 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 57 predicate places. [2023-11-28 23:56:05,835 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 409 transitions, 1162 flow [2023-11-28 23:56:05,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 288.1666666666667) internal successors, (1729), 6 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:05,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:05,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:05,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-28 23:56:06,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:56:06,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:56:06,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash -578414112, now seen corresponding path program 1 times [2023-11-28 23:56:06,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:06,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325635453] [2023-11-28 23:56:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:06,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:06,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:56:06,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697448896] [2023-11-28 23:56:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:06,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:06,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:06,247 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:06,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:56:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:07,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 5968 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-28 23:56:07,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:09,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:11,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:11,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325635453] [2023-11-28 23:56:11,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:56:11,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697448896] [2023-11-28 23:56:11,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697448896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:11,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:56:11,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2023-11-28 23:56:11,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399663606] [2023-11-28 23:56:11,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:11,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-28 23:56:11,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:11,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-28 23:56:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2023-11-28 23:56:11,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 390 [2023-11-28 23:56:11,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 409 transitions, 1162 flow. Second operand has 61 states, 61 states have (on average 367.0327868852459) internal successors, (22389), 61 states have internal predecessors, (22389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:11,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:11,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 390 [2023-11-28 23:56:11,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:17,018 INFO L124 PetriNetUnfolderBase]: 29/5947 cut-off events. [2023-11-28 23:56:17,018 INFO L125 PetriNetUnfolderBase]: For 4308/4308 co-relation queries the response was YES. [2023-11-28 23:56:17,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7283 conditions, 5947 events. 29/5947 cut-off events. For 4308/4308 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2051 event pairs, 18 based on Foata normal form. 30/5940 useless extension candidates. Maximal degree in co-relation 6861. Up to 112 conditions per place. [2023-11-28 23:56:17,030 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 42 selfloop transitions, 90 changer transitions 0/481 dead transitions. [2023-11-28 23:56:17,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 481 transitions, 2142 flow [2023-11-28 23:56:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-11-28 23:56:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-11-28 23:56:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 32997 transitions. [2023-11-28 23:56:17,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.94008547008547 [2023-11-28 23:56:17,051 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 32997 transitions. [2023-11-28 23:56:17,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 32997 transitions. [2023-11-28 23:56:17,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:17,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 32997 transitions. [2023-11-28 23:56:17,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 366.6333333333333) internal successors, (32997), 90 states have internal predecessors, (32997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:17,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 390.0) internal successors, (35490), 91 states have internal predecessors, (35490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:17,131 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 390.0) internal successors, (35490), 91 states have internal predecessors, (35490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:17,131 INFO L175 Difference]: Start difference. First operand has 436 places, 409 transitions, 1162 flow. Second operand 90 states and 32997 transitions. [2023-11-28 23:56:17,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 481 transitions, 2142 flow [2023-11-28 23:56:17,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 481 transitions, 2132 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:56:17,153 INFO L231 Difference]: Finished difference. Result has 536 places, 455 transitions, 1806 flow [2023-11-28 23:56:17,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1806, PETRI_PLACES=536, PETRI_TRANSITIONS=455} [2023-11-28 23:56:17,154 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 157 predicate places. [2023-11-28 23:56:17,155 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 455 transitions, 1806 flow [2023-11-28 23:56:17,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 367.0327868852459) internal successors, (22389), 61 states have internal predecessors, (22389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:17,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:17,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:17,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:56:17,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:56:17,360 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:56:17,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:17,361 INFO L85 PathProgramCache]: Analyzing trace with hash -981659104, now seen corresponding path program 2 times [2023-11-28 23:56:17,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:17,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984262074] [2023-11-28 23:56:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:17,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:17,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:56:17,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889874922] [2023-11-28 23:56:17,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:56:17,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:17,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:17,839 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:17,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:56:19,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:56:19,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:56:19,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:56:19,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:19,385 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 [2023-11-28 23:56:19,401 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 [2023-11-28 23:56:19,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:19,418 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 [2023-11-28 23:56:19,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:19,441 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 [2023-11-28 23:56:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2023-11-28 23:56:19,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:19,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:19,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984262074] [2023-11-28 23:56:19,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:56:19,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889874922] [2023-11-28 23:56:19,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889874922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:19,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:19,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:56:19,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104998612] [2023-11-28 23:56:19,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:19,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:56:19,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:19,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:56:19,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:56:20,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 390 [2023-11-28 23:56:20,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 455 transitions, 1806 flow. Second operand has 6 states, 6 states have (on average 325.1666666666667) internal successors, (1951), 6 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:20,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:20,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 390 [2023-11-28 23:56:20,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:27,219 INFO L124 PetriNetUnfolderBase]: 199/6840 cut-off events. [2023-11-28 23:56:27,219 INFO L125 PetriNetUnfolderBase]: For 1984/1984 co-relation queries the response was YES. [2023-11-28 23:56:27,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10241 conditions, 6840 events. 199/6840 cut-off events. For 1984/1984 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 9035 event pairs, 54 based on Foata normal form. 0/6698 useless extension candidates. Maximal degree in co-relation 5752. Up to 1964 conditions per place. [2023-11-28 23:56:27,242 INFO L140 encePairwiseOnDemand]: 378/390 looper letters, 75 selfloop transitions, 23 changer transitions 0/490 dead transitions. [2023-11-28 23:56:27,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 490 transitions, 2080 flow [2023-11-28 23:56:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:56:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:56:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2001 transitions. [2023-11-28 23:56:27,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8551282051282051 [2023-11-28 23:56:27,245 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2001 transitions. [2023-11-28 23:56:27,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2001 transitions. [2023-11-28 23:56:27,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:27,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2001 transitions. [2023-11-28 23:56:27,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 333.5) internal successors, (2001), 6 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:27,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:27,251 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:27,251 INFO L175 Difference]: Start difference. First operand has 536 places, 455 transitions, 1806 flow. Second operand 6 states and 2001 transitions. [2023-11-28 23:56:27,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 490 transitions, 2080 flow [2023-11-28 23:56:27,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 490 transitions, 1962 flow, removed 17 selfloop flow, removed 42 redundant places. [2023-11-28 23:56:27,276 INFO L231 Difference]: Finished difference. Result has 504 places, 477 transitions, 1846 flow [2023-11-28 23:56:27,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1846, PETRI_PLACES=504, PETRI_TRANSITIONS=477} [2023-11-28 23:56:27,277 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 125 predicate places. [2023-11-28 23:56:27,277 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 477 transitions, 1846 flow [2023-11-28 23:56:27,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.1666666666667) internal successors, (1951), 6 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:27,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:27,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:27,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:56:27,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:56:27,479 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:56:27,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:27,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1614344840, now seen corresponding path program 1 times [2023-11-28 23:56:27,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:27,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20912746] [2023-11-28 23:56:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:27,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:56:27,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202903344] [2023-11-28 23:56:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:27,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:27,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:27,921 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:27,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:56:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:31,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 11531 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:56:31,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2023-11-28 23:56:34,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2023-11-28 23:56:37,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:37,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20912746] [2023-11-28 23:56:37,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:56:37,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202903344] [2023-11-28 23:56:37,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202903344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:37,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:56:37,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-28 23:56:37,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296643912] [2023-11-28 23:56:37,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:37,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:56:37,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:37,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:56:37,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:56:37,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 390 [2023-11-28 23:56:37,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 477 transitions, 1846 flow. Second operand has 8 states, 8 states have (on average 367.125) internal successors, (2937), 8 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:37,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:37,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 390 [2023-11-28 23:56:37,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:51,019 INFO L124 PetriNetUnfolderBase]: 186/9772 cut-off events. [2023-11-28 23:56:51,019 INFO L125 PetriNetUnfolderBase]: For 3227/3231 co-relation queries the response was YES. [2023-11-28 23:56:51,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12050 conditions, 9772 events. 186/9772 cut-off events. For 3227/3231 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8491 event pairs, 55 based on Foata normal form. 2/9613 useless extension candidates. Maximal degree in co-relation 10695. Up to 168 conditions per place. [2023-11-28 23:56:51,050 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 15 selfloop transitions, 9 changer transitions 0/485 dead transitions. [2023-11-28 23:56:51,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 485 transitions, 1912 flow [2023-11-28 23:56:51,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:56:51,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:56:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3311 transitions. [2023-11-28 23:56:51,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9433048433048433 [2023-11-28 23:56:51,055 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3311 transitions. [2023-11-28 23:56:51,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3311 transitions. [2023-11-28 23:56:51,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:51,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3311 transitions. [2023-11-28 23:56:51,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 367.8888888888889) internal successors, (3311), 9 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:51,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:51,063 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:51,063 INFO L175 Difference]: Start difference. First operand has 504 places, 477 transitions, 1846 flow. Second operand 9 states and 3311 transitions. [2023-11-28 23:56:51,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 485 transitions, 1912 flow [2023-11-28 23:56:51,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 485 transitions, 1912 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:56:51,093 INFO L231 Difference]: Finished difference. Result has 515 places, 483 transitions, 1896 flow [2023-11-28 23:56:51,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1896, PETRI_PLACES=515, PETRI_TRANSITIONS=483} [2023-11-28 23:56:51,094 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 136 predicate places. [2023-11-28 23:56:51,094 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 483 transitions, 1896 flow [2023-11-28 23:56:51,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 367.125) internal successors, (2937), 8 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:51,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:51,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:51,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:56:51,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:51,298 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:56:51,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash -998172616, now seen corresponding path program 2 times [2023-11-28 23:56:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:51,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126033165] [2023-11-28 23:56:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:51,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:52,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:56:52,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568634220] [2023-11-28 23:56:52,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:56:52,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:52,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:52,506 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:52,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:56:56,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:56:56,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:56:56,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:56:56,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:56,589 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 [2023-11-28 23:56:56,597 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 [2023-11-28 23:56:56,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:56,610 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 [2023-11-28 23:56:56,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:56,628 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 [2023-11-28 23:56:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 364815 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364815 trivial. 0 not checked. [2023-11-28 23:56:56,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:56,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:56,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126033165] [2023-11-28 23:56:56,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:56:56,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568634220] [2023-11-28 23:56:56,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568634220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:56,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:56,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:56:56,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127475928] [2023-11-28 23:56:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:56:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:56:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:56:57,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 390 [2023-11-28 23:56:57,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 483 transitions, 1896 flow. Second operand has 6 states, 6 states have (on average 325.3333333333333) internal successors, (1952), 6 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:57,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:57,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 390 [2023-11-28 23:56:57,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:57:14,884 INFO L124 PetriNetUnfolderBase]: 311/10328 cut-off events. [2023-11-28 23:57:14,884 INFO L125 PetriNetUnfolderBase]: For 3443/3479 co-relation queries the response was YES. [2023-11-28 23:57:14,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15601 conditions, 10328 events. 311/10328 cut-off events. For 3443/3479 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 14795 event pairs, 61 based on Foata normal form. 8/10122 useless extension candidates. Maximal degree in co-relation 13389. Up to 2945 conditions per place. [2023-11-28 23:57:14,926 INFO L140 encePairwiseOnDemand]: 378/390 looper letters, 88 selfloop transitions, 31 changer transitions 0/522 dead transitions. [2023-11-28 23:57:14,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 522 transitions, 2254 flow [2023-11-28 23:57:14,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:57:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:57:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1997 transitions. [2023-11-28 23:57:14,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8534188034188034 [2023-11-28 23:57:14,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1997 transitions. [2023-11-28 23:57:14,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1997 transitions. [2023-11-28 23:57:14,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:57:14,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1997 transitions. [2023-11-28 23:57:14,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 332.8333333333333) internal successors, (1997), 6 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:14,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:14,935 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:14,936 INFO L175 Difference]: Start difference. First operand has 515 places, 483 transitions, 1896 flow. Second operand 6 states and 1997 transitions. [2023-11-28 23:57:14,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 522 transitions, 2254 flow [2023-11-28 23:57:14,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 522 transitions, 2248 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-28 23:57:14,974 INFO L231 Difference]: Finished difference. Result has 524 places, 513 transitions, 2148 flow [2023-11-28 23:57:14,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2148, PETRI_PLACES=524, PETRI_TRANSITIONS=513} [2023-11-28 23:57:14,976 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 145 predicate places. [2023-11-28 23:57:14,976 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 513 transitions, 2148 flow [2023-11-28 23:57:14,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.3333333333333) internal successors, (1952), 6 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:14,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:57:14,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:57:14,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 23:57:15,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:57:15,195 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:57:15,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1817441449, now seen corresponding path program 1 times [2023-11-28 23:57:15,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:15,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347302660] [2023-11-28 23:57:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:15,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:16,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:57:16,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515662430] [2023-11-28 23:57:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:16,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:57:16,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:57:16,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:57:16,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 23:57:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:25,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 33881 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:57:25,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:57:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 364815 backedges. 0 proven. 245970 refuted. 0 times theorem prover too weak. 118845 trivial. 0 not checked. [2023-11-28 23:57:34,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:57:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 364815 backedges. 0 proven. 245970 refuted. 0 times theorem prover too weak. 118845 trivial. 0 not checked. [2023-11-28 23:57:43,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:57:43,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347302660] [2023-11-28 23:57:43,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:57:43,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515662430] [2023-11-28 23:57:43,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515662430] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:57:43,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:57:43,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-28 23:57:43,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989755376] [2023-11-28 23:57:43,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:57:43,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 23:57:43,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:43,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 23:57:43,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:57:43,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 390 [2023-11-28 23:57:43,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 513 transitions, 2148 flow. Second operand has 16 states, 16 states have (on average 367.0) internal successors, (5872), 16 states have internal predecessors, (5872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:43,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:57:43,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 390 [2023-11-28 23:57:43,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:42,179 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([807] L1039-3-->L1044-2: 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~nondet20#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~nondet20#1=|v_fThread1of1ForFork1_#t~nondet20#1_1|, ~#c~0.offset=|v_~#c~0.offset_32|} AuxVars[] AssignedVars[#pthreadsMutex, fThread1of1ForFork1_#t~nondet20#1][422], [Black: 24862#(< |ULTIMATE.start_main_~j~1#1| 21), Black: 22937#(< |ULTIMATE.start_main_~j~1#1| 28), Black: 24587#(< |ULTIMATE.start_main_~j~1#1| 22), Black: 25962#(< |ULTIMATE.start_main_~j~1#1| 17), Black: 23212#(< |ULTIMATE.start_main_~j~1#1| 27), Black: 22008#(<= |ULTIMATE.start_main_~j~1#1| 15), Black: 25412#(< |ULTIMATE.start_main_~j~1#1| 19), Black: 12340#(< |ULTIMATE.start_main_~j~1#1| 25), 17773#true, Black: 11790#(< |ULTIMATE.start_main_~j~1#1| 27), 186#L1044-2true, Black: 11229#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 12065#(< |ULTIMATE.start_main_~j~1#1| 26), Black: 11515#(< |ULTIMATE.start_main_~j~1#1| 28), Black: 12615#(< |ULTIMATE.start_main_~j~1#1| 24), Black: 11240#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 10760#(<= |ULTIMATE.start_main_~j~1#1| 7), 277#ULTIMATE.startFINALtrue, Black: 400#(= |ULTIMATE.start_main_~i~0#1| 0), 80#L1044-2true, 78143#true, 1684#(= 0 |ULTIMATE.start_new_#res#1.offset|), Black: 35639#(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)), Black: 35627#(= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0), Black: 78128#(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: 569#(= |ULTIMATE.start_main_~j~1#1| 0), Black: 35631#(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: 78132#(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: 35635#(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: 78124#(= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0), Black: 78136#(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: 2577#(<= |ULTIMATE.start_main_~j~1#1| 1), 35646#true, Black: 2746#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 43963#(<= |ULTIMATE.start_main_~i~0#1| 1), Black: 44612#(< |ULTIMATE.start_main_~i~0#1| 10), 52940#true, Black: 5095#(<= |ULTIMATE.start_main_~j~1#1| 3), Black: 5533#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 5522#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 5808#(< |ULTIMATE.start_main_~j~1#1| 28), 4160#true, 27015#true, 2192#true, Black: 23487#(< |ULTIMATE.start_main_~j~1#1| 26), Black: 22662#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 25137#(< |ULTIMATE.start_main_~j~1#1| 20), Black: 24037#(< |ULTIMATE.start_main_~j~1#1| 24), Black: 23762#(< |ULTIMATE.start_main_~j~1#1| 25), fThread1of1ForFork0InUse, Black: 24312#(< |ULTIMATE.start_main_~j~1#1| 23), Black: 22651#(< |ULTIMATE.start_main_~j~1#1| 30), fThread1of1ForFork1InUse, 8725#true, Black: 25687#(< |ULTIMATE.start_main_~j~1#1| 18)]) [2023-11-28 23:58:42,179 INFO L294 olderBase$Statistics]: this new event has 19530 ancestors and is cut-off event [2023-11-28 23:58:42,179 INFO L297 olderBase$Statistics]: existing Event has 19503 ancestors and is cut-off event [2023-11-28 23:58:42,179 INFO L297 olderBase$Statistics]: existing Event has 19503 ancestors and is cut-off event [2023-11-28 23:58:42,179 INFO L297 olderBase$Statistics]: existing Event has 19503 ancestors and is cut-off event [2023-11-28 23:58:45,672 INFO L124 PetriNetUnfolderBase]: 344/21678 cut-off events. [2023-11-28 23:58:45,672 INFO L125 PetriNetUnfolderBase]: For 7796/7814 co-relation queries the response was YES. [2023-11-28 23:58:45,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27026 conditions, 21678 events. 344/21678 cut-off events. For 7796/7814 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 16966 event pairs, 100 based on Foata normal form. 10/21433 useless extension candidates. Maximal degree in co-relation 24358. Up to 392 conditions per place. [2023-11-28 23:58:45,765 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 19 selfloop transitions, 21 changer transitions 0/531 dead transitions. [2023-11-28 23:58:45,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 531 transitions, 2316 flow [2023-11-28 23:58:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 23:58:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-28 23:58:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7709 transitions. [2023-11-28 23:58:45,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9412698412698413 [2023-11-28 23:58:45,774 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7709 transitions. [2023-11-28 23:58:45,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7709 transitions. [2023-11-28 23:58:45,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:45,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7709 transitions. [2023-11-28 23:58:45,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 367.0952380952381) internal successors, (7709), 21 states have internal predecessors, (7709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:45,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 390.0) internal successors, (8580), 22 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:45,796 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 390.0) internal successors, (8580), 22 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:45,796 INFO L175 Difference]: Start difference. First operand has 524 places, 513 transitions, 2148 flow. Second operand 21 states and 7709 transitions. [2023-11-28 23:58:45,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 531 transitions, 2316 flow [2023-11-28 23:58:45,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 531 transitions, 2316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:58:45,847 INFO L231 Difference]: Finished difference. Result has 549 places, 526 transitions, 2278 flow [2023-11-28 23:58:45,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2278, PETRI_PLACES=549, PETRI_TRANSITIONS=526} [2023-11-28 23:58:45,848 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 170 predicate places. [2023-11-28 23:58:45,848 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 526 transitions, 2278 flow [2023-11-28 23:58:45,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 367.0) internal successors, (5872), 16 states have internal predecessors, (5872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:45,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:45,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:45,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 23:58:46,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-28 23:58:46,059 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:58:46,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1717839319, now seen corresponding path program 2 times [2023-11-28 23:58:46,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:46,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310614865] [2023-11-28 23:58:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:46,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:48,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:58:48,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346524079] [2023-11-28 23:58:48,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:58:48,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:58:48,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:58:48,960 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:58:48,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 23:58:57,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:58:57,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:58:57,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:58:58,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:58:58,889 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 [2023-11-28 23:58:58,896 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 [2023-11-28 23:58:58,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:58:58,910 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 [2023-11-28 23:58:58,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:58:58,927 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 [2023-11-28 23:58:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1999081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1999081 trivial. 0 not checked. [2023-11-28 23:58:59,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:58:59,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:59,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310614865] [2023-11-28 23:58:59,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:58:59,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346524079] [2023-11-28 23:58:59,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346524079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:58:59,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:58:59,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:58:59,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947108318] [2023-11-28 23:58:59,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:58:59,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:58:59,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:59,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:58:59,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:58:59,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 390 [2023-11-28 23:58:59,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 526 transitions, 2278 flow. Second operand has 6 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) [2023-11-28 23:58:59,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:59,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 390 [2023-11-28 23:58:59,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:25,533 INFO L124 PetriNetUnfolderBase]: 455/21920 cut-off events. [2023-11-29 00:00:25,533 INFO L125 PetriNetUnfolderBase]: For 8594/8700 co-relation queries the response was YES. [2023-11-29 00:00:25,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33940 conditions, 21920 events. 455/21920 cut-off events. For 8594/8700 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 20256 event pairs, 87 based on Foata normal form. 34/21723 useless extension candidates. Maximal degree in co-relation 30521. Up to 6503 conditions per place. [2023-11-29 00:00:25,649 INFO L140 encePairwiseOnDemand]: 379/390 looper letters, 112 selfloop transitions, 55 changer transitions 0/587 dead transitions. [2023-11-29 00:00:25,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 587 transitions, 2938 flow [2023-11-29 00:00:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:00:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:00:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1994 transitions. [2023-11-29 00:00:25,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8521367521367521 [2023-11-29 00:00:25,652 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1994 transitions. [2023-11-29 00:00:25,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1994 transitions. [2023-11-29 00:00:25,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:25,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1994 transitions. [2023-11-29 00:00:25,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 332.3333333333333) internal successors, (1994), 6 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:00:25,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:00:25,655 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:00:25,655 INFO L175 Difference]: Start difference. First operand has 549 places, 526 transitions, 2278 flow. Second operand 6 states and 1994 transitions. [2023-11-29 00:00:25,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 587 transitions, 2938 flow [2023-11-29 00:00:25,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 587 transitions, 2914 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 00:00:25,696 INFO L231 Difference]: Finished difference. Result has 553 places, 575 transitions, 2808 flow [2023-11-29 00:00:25,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2808, PETRI_PLACES=553, PETRI_TRANSITIONS=575} [2023-11-29 00:00:25,697 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 174 predicate places. [2023-11-29 00:00:25,697 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 575 transitions, 2808 flow [2023-11-29 00:00:25,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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 00:00:25,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:25,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:25,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 00:00:25,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:00:25,907 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 00:00:25,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:25,911 INFO L85 PathProgramCache]: Analyzing trace with hash -341269695, now seen corresponding path program 1 times [2023-11-29 00:00:25,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:25,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316710903] [2023-11-29 00:00:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:25,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:28,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:00:28,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298863684] [2023-11-29 00:00:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:28,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:00:28,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:00:28,944 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:00:28,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:00:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:51,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 78593 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:00:51,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:01:11,833 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 00:01:11,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:01:33,549 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 00:01:33,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:33,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316710903] [2023-11-29 00:01:33,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:01:33,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298863684] [2023-11-29 00:01:33,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298863684] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:01:33,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:01:33,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2023-11-29 00:01:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871232330] [2023-11-29 00:01:33,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:01:33,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 00:01:33,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:33,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 00:01:33,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:01:33,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 390 [2023-11-29 00:01:33,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 575 transitions, 2808 flow. Second operand has 21 states, 21 states have (on average 367.14285714285717) internal successors, (7710), 21 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:01:33,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:01:33,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 390 [2023-11-29 00:01:33,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:03:23,909 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([807] L1039-3-->L1044-2: 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~nondet20#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~nondet20#1=|v_fThread1of1ForFork1_#t~nondet20#1_1|, ~#c~0.offset=|v_~#c~0.offset_32|} AuxVars[] AssignedVars[#pthreadsMutex, fThread1of1ForFork1_#t~nondet20#1][432], [Black: 24862#(< |ULTIMATE.start_main_~j~1#1| 21), Black: 22937#(< |ULTIMATE.start_main_~j~1#1| 28), Black: 24587#(< |ULTIMATE.start_main_~j~1#1| 22), Black: 25962#(< |ULTIMATE.start_main_~j~1#1| 17), 128595#true, Black: 23212#(< |ULTIMATE.start_main_~j~1#1| 27), Black: 22008#(<= |ULTIMATE.start_main_~j~1#1| 15), Black: 25412#(< |ULTIMATE.start_main_~j~1#1| 19), Black: 12340#(< |ULTIMATE.start_main_~j~1#1| 25), 17773#true, Black: 11790#(< |ULTIMATE.start_main_~j~1#1| 27), 186#L1044-2true, Black: 11229#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 12065#(< |ULTIMATE.start_main_~j~1#1| 26), Black: 11515#(< |ULTIMATE.start_main_~j~1#1| 28), Black: 12615#(< |ULTIMATE.start_main_~j~1#1| 24), Black: 11240#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 10760#(<= |ULTIMATE.start_main_~j~1#1| 7), 277#ULTIMATE.startFINALtrue, Black: 400#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 186903#(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: 186899#(= (select (select |#race| |fThread1of1ForFork0_~pos~0#1.base|) |fThread1of1ForFork0_~pos~0#1.offset|) 0), 186918#true, Black: 186907#(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: 186911#(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)), 80#L1044-2true, 78143#true, 1684#(= 0 |ULTIMATE.start_new_#res#1.offset|), Black: 35639#(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)), Black: 35627#(= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0), Black: 78128#(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: 569#(= |ULTIMATE.start_main_~j~1#1| 0), Black: 78132#(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: 35631#(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: 35635#(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: 78124#(= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0), Black: 78136#(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: 2577#(<= |ULTIMATE.start_main_~j~1#1| 1), 35646#true, Black: 2746#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 43963#(<= |ULTIMATE.start_main_~i~0#1| 1), Black: 44612#(< |ULTIMATE.start_main_~i~0#1| 10), Black: 103691#(< |ULTIMATE.start_main_~i~0#1| 10), Black: 111981#(< |ULTIMATE.start_main_~i~0#1| 8), Black: 103018#(<= |ULTIMATE.start_main_~i~0#1| 3), 52940#true, Black: 5095#(<= |ULTIMATE.start_main_~j~1#1| 3), Black: 5533#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 103702#(< |ULTIMATE.start_main_~i~0#1| 9), Black: 5522#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 5808#(< |ULTIMATE.start_main_~j~1#1| 28), 4160#true, 27015#true, 2192#true, Black: 23487#(< |ULTIMATE.start_main_~j~1#1| 26), Black: 22662#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 25137#(< |ULTIMATE.start_main_~j~1#1| 20), Black: 24037#(< |ULTIMATE.start_main_~j~1#1| 24), Black: 23762#(< |ULTIMATE.start_main_~j~1#1| 25), fThread1of1ForFork0InUse, Black: 24312#(< |ULTIMATE.start_main_~j~1#1| 23), Black: 22651#(< |ULTIMATE.start_main_~j~1#1| 30), fThread1of1ForFork1InUse, 8725#true, Black: 25687#(< |ULTIMATE.start_main_~j~1#1| 18)]) [2023-11-29 00:03:23,910 INFO L294 olderBase$Statistics]: this new event has 27807 ancestors and is cut-off event [2023-11-29 00:03:23,910 INFO L297 olderBase$Statistics]: existing Event has 27780 ancestors and is cut-off event [2023-11-29 00:03:23,910 INFO L297 olderBase$Statistics]: existing Event has 27780 ancestors and is cut-off event [2023-11-29 00:03:23,910 INFO L297 olderBase$Statistics]: existing Event has 27780 ancestors and is cut-off event [2023-11-29 00:03:31,838 INFO L124 PetriNetUnfolderBase]: 533/30690 cut-off events. [2023-11-29 00:03:31,838 INFO L125 PetriNetUnfolderBase]: For 12461/12551 co-relation queries the response was YES. [2023-11-29 00:03:31,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39095 conditions, 30690 events. 533/30690 cut-off events. For 12461/12551 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 23630 event pairs, 115 based on Foata normal form. 39/30416 useless extension candidates. Maximal degree in co-relation 35764. Up to 560 conditions per place. [2023-11-29 00:03:31,996 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 22 selfloop transitions, 30 changer transitions 0/592 dead transitions. [2023-11-29 00:03:31,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 592 transitions, 3034 flow [2023-11-29 00:03:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 00:03:31,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 00:03:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 11005 transitions. [2023-11-29 00:03:32,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9405982905982906 [2023-11-29 00:03:32,002 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 11005 transitions. [2023-11-29 00:03:32,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 11005 transitions. [2023-11-29 00:03:32,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:03:32,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 11005 transitions. [2023-11-29 00:03:32,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 366.8333333333333) internal successors, (11005), 30 states have internal predecessors, (11005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:32,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 390.0) internal successors, (12090), 31 states have internal predecessors, (12090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:32,017 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 390.0) internal successors, (12090), 31 states have internal predecessors, (12090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:32,017 INFO L175 Difference]: Start difference. First operand has 553 places, 575 transitions, 2808 flow. Second operand 30 states and 11005 transitions. [2023-11-29 00:03:32,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 592 transitions, 3034 flow [2023-11-29 00:03:32,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 592 transitions, 3034 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:03:32,059 INFO L231 Difference]: Finished difference. Result has 586 places, 585 transitions, 2960 flow [2023-11-29 00:03:32,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2960, PETRI_PLACES=586, PETRI_TRANSITIONS=585} [2023-11-29 00:03:32,060 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 207 predicate places. [2023-11-29 00:03:32,060 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 585 transitions, 2960 flow [2023-11-29 00:03:32,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 367.14285714285717) internal successors, (7710), 21 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:32,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:03:32,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:32,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:03:32,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 00:03:32,263 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 00:03:32,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:32,265 INFO L85 PathProgramCache]: Analyzing trace with hash 64214075, now seen corresponding path program 2 times [2023-11-29 00:03:32,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:32,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596828918] [2023-11-29 00:03:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:32,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:36,495 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:03:36,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551091427] [2023-11-29 00:03:36,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:03:36,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:03:36,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:03:36,499 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:03:36,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:03:50,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:03:50,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:03:51,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:03:51,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:03:51,753 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 00:03:51,759 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 00:03:51,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:03:51,772 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 00:03:51,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:03:51,791 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 00:03:51,916 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 00:03:51,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:03:51,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:51,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596828918] [2023-11-29 00:03:51,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:03:51,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551091427] [2023-11-29 00:03:51,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551091427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:03:51,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:03:51,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:03:51,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045168721] [2023-11-29 00:03:51,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:03:51,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:03:51,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:51,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:03:51,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:03:52,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 390 [2023-11-29 00:03:52,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 585 transitions, 2960 flow. Second operand has 6 states, 6 states have (on average 324.3333333333333) internal successors, (1946), 6 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:52,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:03:52,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 390 [2023-11-29 00:03:52,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:06:35,727 INFO L124 PetriNetUnfolderBase]: 574/30553 cut-off events. [2023-11-29 00:06:35,727 INFO L125 PetriNetUnfolderBase]: For 14533/14787 co-relation queries the response was YES. [2023-11-29 00:06:35,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48216 conditions, 30553 events. 574/30553 cut-off events. For 14533/14787 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 23229 event pairs, 84 based on Foata normal form. 112/30448 useless extension candidates. Maximal degree in co-relation 44306. Up to 9184 conditions per place. [2023-11-29 00:06:35,955 INFO L140 encePairwiseOnDemand]: 379/390 looper letters, 145 selfloop transitions, 79 changer transitions 0/658 dead transitions. [2023-11-29 00:06:35,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 658 transitions, 3946 flow [2023-11-29 00:06:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:06:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:06:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1990 transitions. [2023-11-29 00:06:35,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8504273504273504 [2023-11-29 00:06:35,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1990 transitions. [2023-11-29 00:06:35,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1990 transitions. [2023-11-29 00:06:35,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:06:35,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1990 transitions. [2023-11-29 00:06:35,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:06:35,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:06:35,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:06:35,961 INFO L175 Difference]: Start difference. First operand has 586 places, 585 transitions, 2960 flow. Second operand 6 states and 1990 transitions. [2023-11-29 00:06:35,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 658 transitions, 3946 flow [2023-11-29 00:06:36,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 658 transitions, 3900 flow, removed 5 selfloop flow, removed 18 redundant places. [2023-11-29 00:06:36,015 INFO L231 Difference]: Finished difference. Result has 578 places, 650 transitions, 3812 flow [2023-11-29 00:06:36,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3812, PETRI_PLACES=578, PETRI_TRANSITIONS=650} [2023-11-29 00:06:36,016 INFO L281 CegarLoopForPetriNet]: 379 programPoint places, 199 predicate places. [2023-11-29 00:06:36,016 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 650 transitions, 3812 flow [2023-11-29 00:06:36,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 324.3333333333333) internal successors, (1946), 6 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:06:36,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:06:36,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:06:36,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 00:06:36,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:06:36,220 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 00:06:36,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:36,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1735116632, now seen corresponding path program 1 times [2023-11-29 00:06:36,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:36,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650943049] [2023-11-29 00:06:36,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:36,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:40,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:06:40,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516125246] [2023-11-29 00:06:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:40,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:06:40,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:06:40,216 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:06:40,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c761eb3-4b88-4592-9d6f-f1ca7ecb5587/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 00:08:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:08:06,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 112117 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:08:06,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:08:07,477 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 00:08:07,483 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 00:08:07,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:08:07,495 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 00:08:07,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:08:07,511 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 00:08:07,619 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 00:08:07,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:08:07,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:08:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650943049] [2023-11-29 00:08:07,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:08:07,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516125246] [2023-11-29 00:08:07,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516125246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:08:07,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:08:07,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:08:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483031004] [2023-11-29 00:08:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:08:07,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:08:07,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:08:07,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:08:07,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:08:08,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 390 [2023-11-29 00:08:08,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 650 transitions, 3812 flow. Second operand has 6 states, 6 states have (on average 294.5) internal successors, (1767), 6 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:08:08,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:08:08,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 390 [2023-11-29 00:08:08,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand