./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 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_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx --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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:26:44,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:26:44,620 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:26:44,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:26:44,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:26:44,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:26:44,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:26:44,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:26:44,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:26:44,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:26:44,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:26:44,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:26:44,658 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:26:44,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:26:44,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:26:44,660 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:26:44,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:26:44,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:26:44,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:26:44,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:26:44,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:26:44,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:26:44,664 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:26:44,664 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:26:44,665 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:26:44,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:26:44,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:26:44,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:26:44,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:26:44,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:26:44,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:26:44,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:26:44,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:26:44,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:26:44,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:26:44,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:26:44,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:26:44,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:26:44,673 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:26:44,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:26:44,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:26:44,674 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_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2023-11-21 22:26:44,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:26:44,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:26:44,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:26:44,931 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:26:44,932 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:26:44,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2023-11-21 22:26:48,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:26:48,524 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:26:48,527 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2023-11-21 22:26:48,547 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/data/af360f421/25e5b52aad4f41998bff4338c50d6f92/FLAG0dafdf8cb [2023-11-21 22:26:48,562 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/data/af360f421/25e5b52aad4f41998bff4338c50d6f92 [2023-11-21 22:26:48,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:26:48,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:26:48,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:48,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:26:48,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:26:48,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:48" (1/1) ... [2023-11-21 22:26:48,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6660f8a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:48, skipping insertion in model container [2023-11-21 22:26:48,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:48" (1/1) ... [2023-11-21 22:26:48,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:26:49,237 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-21 22:26:49,240 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-21 22:26:49,241 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-21 22:26:49,244 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-21 22:26:49,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:49,326 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:26:49,387 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-21 22:26:49,388 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-21 22:26:49,391 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-21 22:26:49,392 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-21 22:26:49,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:49,499 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:26:49,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49 WrapperNode [2023-11-21 22:26:49,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:49,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:49,502 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:26:49,502 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:26:49,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,625 INFO L138 Inliner]: procedures = 273, calls = 36, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 223 [2023-11-21 22:26:49,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:49,630 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:26:49,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:26:49,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:26:49,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:26:49,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:26:49,728 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:26:49,729 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:26:49,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (1/1) ... [2023-11-21 22:26:49,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:26:49,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:49,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:49,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:26:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-21 22:26:49,819 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-21 22:26:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:26:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:26:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:26:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:26:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:26:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:26:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:26:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:26:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:26:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:26:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:26:49,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:26:49,826 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:26:50,011 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:26:50,013 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:26:50,585 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:26:50,612 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:26:50,612 INFO L308 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-21 22:26:50,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:50 BoogieIcfgContainer [2023-11-21 22:26:50,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:26:50,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:26:50,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:26:50,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:26:50,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:26:48" (1/3) ... [2023-11-21 22:26:50,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769634b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:26:50, skipping insertion in model container [2023-11-21 22:26:50,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:49" (2/3) ... [2023-11-21 22:26:50,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769634b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:26:50, skipping insertion in model container [2023-11-21 22:26:50,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:50" (3/3) ... [2023-11-21 22:26:50,625 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2023-11-21 22:26:50,635 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:26:50,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:26:50,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-21 22:26:50,647 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:26:50,779 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:26:50,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 322 transitions, 652 flow [2023-11-21 22:26:50,981 INFO L124 PetriNetUnfolderBase]: 15/320 cut-off events. [2023-11-21 22:26:50,981 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:26:51,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 320 events. 15/320 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 622 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 241. Up to 2 conditions per place. [2023-11-21 22:26:51,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 322 transitions, 652 flow [2023-11-21 22:26:51,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 320 transitions, 646 flow [2023-11-21 22:26:51,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:26:51,044 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;@45837342, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:26:51,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-21 22:26:51,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:26:51,078 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2023-11-21 22:26:51,078 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:26:51,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:51,079 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] [2023-11-21 22:26:51,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:26:51,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1339324047, now seen corresponding path program 1 times [2023-11-21 22:26:51,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:51,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805063800] [2023-11-21 22:26:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:51,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:51,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:51,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805063800] [2023-11-21 22:26:51,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805063800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:51,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:51,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:51,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956064508] [2023-11-21 22:26:51,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:51,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:51,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:52,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:52,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:52,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 322 [2023-11-21 22:26:52,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 320 transitions, 646 flow. Second operand has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:52,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:52,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 322 [2023-11-21 22:26:52,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:53,406 INFO L124 PetriNetUnfolderBase]: 449/1800 cut-off events. [2023-11-21 22:26:53,407 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-21 22:26:53,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1800 events. 449/1800 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11689 event pairs, 342 based on Foata normal form. 153/1745 useless extension candidates. Maximal degree in co-relation 2489. Up to 846 conditions per place. [2023-11-21 22:26:53,435 INFO L140 encePairwiseOnDemand]: 301/322 looper letters, 72 selfloop transitions, 10 changer transitions 1/309 dead transitions. [2023-11-21 22:26:53,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 309 transitions, 788 flow [2023-11-21 22:26:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:26:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1467 transitions. [2023-11-21 22:26:53,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2023-11-21 22:26:53,464 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1467 transitions. [2023-11-21 22:26:53,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1467 transitions. [2023-11-21 22:26:53,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:53,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1467 transitions. [2023-11-21 22:26:53,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:53,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:53,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:53,494 INFO L175 Difference]: Start difference. First operand has 312 places, 320 transitions, 646 flow. Second operand 6 states and 1467 transitions. [2023-11-21 22:26:53,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 309 transitions, 788 flow [2023-11-21 22:26:53,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 309 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:26:53,509 INFO L231 Difference]: Finished difference. Result has 313 places, 308 transitions, 640 flow [2023-11-21 22:26:53,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=640, PETRI_PLACES=313, PETRI_TRANSITIONS=308} [2023-11-21 22:26:53,516 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, 1 predicate places. [2023-11-21 22:26:53,516 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 308 transitions, 640 flow [2023-11-21 22:26:53,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:53,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:53,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:53,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:26:53,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:26:53,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash 166405905, now seen corresponding path program 1 times [2023-11-21 22:26:53,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:53,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697195695] [2023-11-21 22:26:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:53,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:54,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:54,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697195695] [2023-11-21 22:26:54,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697195695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:54,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:54,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:54,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100812688] [2023-11-21 22:26:54,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:54,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:54,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 322 [2023-11-21 22:26:54,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 308 transitions, 640 flow. Second operand has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:54,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:54,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 322 [2023-11-21 22:26:54,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:55,022 INFO L124 PetriNetUnfolderBase]: 449/1797 cut-off events. [2023-11-21 22:26:55,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:26:55,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1797 events. 449/1797 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11693 event pairs, 342 based on Foata normal form. 0/1592 useless extension candidates. Maximal degree in co-relation 2530. Up to 846 conditions per place. [2023-11-21 22:26:55,043 INFO L140 encePairwiseOnDemand]: 310/322 looper letters, 72 selfloop transitions, 10 changer transitions 0/306 dead transitions. [2023-11-21 22:26:55,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 306 transitions, 800 flow [2023-11-21 22:26:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:55,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:26:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1458 transitions. [2023-11-21 22:26:55,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7546583850931677 [2023-11-21 22:26:55,050 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1458 transitions. [2023-11-21 22:26:55,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1458 transitions. [2023-11-21 22:26:55,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:55,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1458 transitions. [2023-11-21 22:26:55,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:55,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:55,062 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:55,063 INFO L175 Difference]: Start difference. First operand has 313 places, 308 transitions, 640 flow. Second operand 6 states and 1458 transitions. [2023-11-21 22:26:55,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 306 transitions, 800 flow [2023-11-21 22:26:55,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 306 transitions, 780 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:26:55,077 INFO L231 Difference]: Finished difference. Result has 310 places, 306 transitions, 636 flow [2023-11-21 22:26:55,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=636, PETRI_PLACES=310, PETRI_TRANSITIONS=306} [2023-11-21 22:26:55,079 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, -2 predicate places. [2023-11-21 22:26:55,079 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 306 transitions, 636 flow [2023-11-21 22:26:55,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:55,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:55,082 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] [2023-11-21 22:26:55,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:26:55,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:26:55,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash 427907071, now seen corresponding path program 1 times [2023-11-21 22:26:55,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:55,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653676119] [2023-11-21 22:26:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:55,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:55,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:55,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653676119] [2023-11-21 22:26:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653676119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:55,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:55,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:26:55,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111422678] [2023-11-21 22:26:55,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:26:55,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:26:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:26:55,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 322 [2023-11-21 22:26:55,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 306 transitions, 636 flow. Second operand has 3 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:55,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:55,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 322 [2023-11-21 22:26:55,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:55,314 INFO L124 PetriNetUnfolderBase]: 29/617 cut-off events. [2023-11-21 22:26:55,315 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:26:55,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 617 events. 29/617 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2529 event pairs, 18 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 447. Up to 45 conditions per place. [2023-11-21 22:26:55,321 INFO L140 encePairwiseOnDemand]: 319/322 looper letters, 11 selfloop transitions, 2 changer transitions 0/307 dead transitions. [2023-11-21 22:26:55,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 307 transitions, 664 flow [2023-11-21 22:26:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:26:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:26:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-11-21 22:26:55,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9492753623188406 [2023-11-21 22:26:55,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-11-21 22:26:55,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-11-21 22:26:55,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:55,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-11-21 22:26:55,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:55,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:55,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:55,334 INFO L175 Difference]: Start difference. First operand has 310 places, 306 transitions, 636 flow. Second operand 3 states and 917 transitions. [2023-11-21 22:26:55,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 307 transitions, 664 flow [2023-11-21 22:26:55,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 307 transitions, 644 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:26:55,342 INFO L231 Difference]: Finished difference. Result has 308 places, 307 transitions, 628 flow [2023-11-21 22:26:55,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=628, PETRI_PLACES=308, PETRI_TRANSITIONS=307} [2023-11-21 22:26:55,345 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, -4 predicate places. [2023-11-21 22:26:55,348 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 307 transitions, 628 flow [2023-11-21 22:26:55,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:55,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:55,350 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] [2023-11-21 22:26:55,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:26:55,352 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:26:55,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:55,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1503294088, now seen corresponding path program 1 times [2023-11-21 22:26:55,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:55,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286484595] [2023-11-21 22:26:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:55,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:55,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:26:55,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797910671] [2023-11-21 22:26:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:55,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:55,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:55,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:55,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:26:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:55,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:26:55,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:55,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:26:55,700 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 [2023-11-21 22:26:55,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:55,728 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 [2023-11-21 22:26:55,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:55,762 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 [2023-11-21 22:26:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:55,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:26:55,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:55,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286484595] [2023-11-21 22:26:55,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:26:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797910671] [2023-11-21 22:26:55,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797910671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:55,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:55,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:55,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727459100] [2023-11-21 22:26:55,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:55,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:55,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:55,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:56,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 322 [2023-11-21 22:26:56,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 307 transitions, 628 flow. Second operand has 6 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:56,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:56,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 322 [2023-11-21 22:26:56,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:56,740 INFO L124 PetriNetUnfolderBase]: 450/1920 cut-off events. [2023-11-21 22:26:56,740 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:26:56,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2872 conditions, 1920 events. 450/1920 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12456 event pairs, 342 based on Foata normal form. 0/1711 useless extension candidates. Maximal degree in co-relation 2673. Up to 894 conditions per place. [2023-11-21 22:26:56,760 INFO L140 encePairwiseOnDemand]: 316/322 looper letters, 79 selfloop transitions, 5 changer transitions 0/306 dead transitions. [2023-11-21 22:26:56,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 306 transitions, 794 flow [2023-11-21 22:26:56,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:26:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1453 transitions. [2023-11-21 22:26:56,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7520703933747412 [2023-11-21 22:26:56,766 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1453 transitions. [2023-11-21 22:26:56,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1453 transitions. [2023-11-21 22:26:56,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:56,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1453 transitions. [2023-11-21 22:26:56,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.16666666666666) internal successors, (1453), 6 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:56,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:56,779 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:56,780 INFO L175 Difference]: Start difference. First operand has 308 places, 307 transitions, 628 flow. Second operand 6 states and 1453 transitions. [2023-11-21 22:26:56,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 306 transitions, 794 flow [2023-11-21 22:26:56,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 306 transitions, 792 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:26:56,787 INFO L231 Difference]: Finished difference. Result has 311 places, 306 transitions, 634 flow [2023-11-21 22:26:56,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=311, PETRI_TRANSITIONS=306} [2023-11-21 22:26:56,789 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, -1 predicate places. [2023-11-21 22:26:56,790 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 306 transitions, 634 flow [2023-11-21 22:26:56,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:56,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:56,791 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] [2023-11-21 22:26:56,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:57,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:57,010 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:26:57,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:57,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1701140278, now seen corresponding path program 1 times [2023-11-21 22:26:57,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:57,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058175779] [2023-11-21 22:26:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:57,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:57,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:57,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058175779] [2023-11-21 22:26:57,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058175779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:57,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:57,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:26:57,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756033375] [2023-11-21 22:26:57,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:57,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:26:57,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:57,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:26:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:26:57,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 322 [2023-11-21 22:26:57,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 306 transitions, 634 flow. Second operand has 3 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:57,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:57,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 322 [2023-11-21 22:26:57,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:57,283 INFO L124 PetriNetUnfolderBase]: 29/805 cut-off events. [2023-11-21 22:26:57,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:26:57,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 805 events. 29/805 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2496 event pairs, 18 based on Foata normal form. 2/751 useless extension candidates. Maximal degree in co-relation 526. Up to 49 conditions per place. [2023-11-21 22:26:57,290 INFO L140 encePairwiseOnDemand]: 319/322 looper letters, 11 selfloop transitions, 2 changer transitions 0/307 dead transitions. [2023-11-21 22:26:57,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 307 transitions, 662 flow [2023-11-21 22:26:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:26:57,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:26:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-11-21 22:26:57,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9492753623188406 [2023-11-21 22:26:57,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-11-21 22:26:57,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-11-21 22:26:57,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:57,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-11-21 22:26:57,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:57,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:57,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:57,325 INFO L175 Difference]: Start difference. First operand has 311 places, 306 transitions, 634 flow. Second operand 3 states and 917 transitions. [2023-11-21 22:26:57,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 307 transitions, 662 flow [2023-11-21 22:26:57,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 307 transitions, 652 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:26:57,335 INFO L231 Difference]: Finished difference. Result has 309 places, 307 transitions, 636 flow [2023-11-21 22:26:57,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=636, PETRI_PLACES=309, PETRI_TRANSITIONS=307} [2023-11-21 22:26:57,338 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, -3 predicate places. [2023-11-21 22:26:57,339 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 307 transitions, 636 flow [2023-11-21 22:26:57,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:57,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:57,340 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] [2023-11-21 22:26:57,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:26:57,340 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:26:57,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1068809932, now seen corresponding path program 1 times [2023-11-21 22:26:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:57,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315635918] [2023-11-21 22:26:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:57,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:57,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:26:57,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48282134] [2023-11-21 22:26:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:57,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:57,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:57,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:57,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:26:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:57,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:26:57,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:57,602 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 [2023-11-21 22:26:57,614 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 [2023-11-21 22:26:57,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:57,639 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 [2023-11-21 22:26:57,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:57,675 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 [2023-11-21 22:26:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:57,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:26:57,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:57,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315635918] [2023-11-21 22:26:57,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:26:57,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48282134] [2023-11-21 22:26:57,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48282134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:57,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:57,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:57,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329148782] [2023-11-21 22:26:57,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:57,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:57,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:57,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:57,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:58,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 322 [2023-11-21 22:26:58,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 307 transitions, 636 flow. Second operand has 6 states, 6 states have (on average 257.5) internal successors, (1545), 6 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:58,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:58,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 322 [2023-11-21 22:26:58,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:58,532 INFO L124 PetriNetUnfolderBase]: 75/1121 cut-off events. [2023-11-21 22:26:58,532 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:26:58,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 1121 events. 75/1121 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4744 event pairs, 42 based on Foata normal form. 0/1028 useless extension candidates. Maximal degree in co-relation 970. Up to 263 conditions per place. [2023-11-21 22:26:58,543 INFO L140 encePairwiseOnDemand]: 316/322 looper letters, 54 selfloop transitions, 5 changer transitions 0/306 dead transitions. [2023-11-21 22:26:58,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 306 transitions, 752 flow [2023-11-21 22:26:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:58,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:26:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1578 transitions. [2023-11-21 22:26:58,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8167701863354038 [2023-11-21 22:26:58,549 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1578 transitions. [2023-11-21 22:26:58,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1578 transitions. [2023-11-21 22:26:58,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:58,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1578 transitions. [2023-11-21 22:26:58,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:58,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:58,561 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:58,561 INFO L175 Difference]: Start difference. First operand has 309 places, 307 transitions, 636 flow. Second operand 6 states and 1578 transitions. [2023-11-21 22:26:58,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 306 transitions, 752 flow [2023-11-21 22:26:58,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 306 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:26:58,569 INFO L231 Difference]: Finished difference. Result has 312 places, 306 transitions, 642 flow [2023-11-21 22:26:58,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=642, PETRI_PLACES=312, PETRI_TRANSITIONS=306} [2023-11-21 22:26:58,571 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, 0 predicate places. [2023-11-21 22:26:58,571 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 306 transitions, 642 flow [2023-11-21 22:26:58,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 257.5) internal successors, (1545), 6 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:58,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:58,573 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] [2023-11-21 22:26:58,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:58,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 22:26:58,791 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:26:58,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash 22983295, now seen corresponding path program 1 times [2023-11-21 22:26:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:58,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973174028] [2023-11-21 22:26:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:58,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:26:58,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495296986] [2023-11-21 22:26:58,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:58,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:58,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:58,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:58,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:26:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:59,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:26:59,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:59,087 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 [2023-11-21 22:26:59,104 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 [2023-11-21 22:26:59,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:59,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2023-11-21 22:26:59,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:59,178 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 [2023-11-21 22:26:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:59,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:26:59,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973174028] [2023-11-21 22:26:59,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:26:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495296986] [2023-11-21 22:26:59,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495296986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:59,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:59,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:59,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895290907] [2023-11-21 22:26:59,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:59,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:59,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:59,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:59,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:59,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 322 [2023-11-21 22:26:59,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 306 transitions, 642 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:59,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:59,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 322 [2023-11-21 22:26:59,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:00,309 INFO L124 PetriNetUnfolderBase]: 450/2102 cut-off events. [2023-11-21 22:27:00,309 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:27:00,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3158 conditions, 2102 events. 450/2102 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12442 event pairs, 342 based on Foata normal form. 0/1893 useless extension candidates. Maximal degree in co-relation 2716. Up to 960 conditions per place. [2023-11-21 22:27:00,330 INFO L140 encePairwiseOnDemand]: 316/322 looper letters, 79 selfloop transitions, 5 changer transitions 0/305 dead transitions. [2023-11-21 22:27:00,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 305 transitions, 808 flow [2023-11-21 22:27:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:27:00,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:27:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1453 transitions. [2023-11-21 22:27:00,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7520703933747412 [2023-11-21 22:27:00,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1453 transitions. [2023-11-21 22:27:00,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1453 transitions. [2023-11-21 22:27:00,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:00,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1453 transitions. [2023-11-21 22:27:00,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.16666666666666) internal successors, (1453), 6 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:00,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:00,348 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:00,348 INFO L175 Difference]: Start difference. First operand has 312 places, 306 transitions, 642 flow. Second operand 6 states and 1453 transitions. [2023-11-21 22:27:00,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 305 transitions, 808 flow [2023-11-21 22:27:00,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 305 transitions, 798 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:27:00,356 INFO L231 Difference]: Finished difference. Result has 311 places, 305 transitions, 640 flow [2023-11-21 22:27:00,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=640, PETRI_PLACES=311, PETRI_TRANSITIONS=305} [2023-11-21 22:27:00,358 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, -1 predicate places. [2023-11-21 22:27:00,358 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 305 transitions, 640 flow [2023-11-21 22:27:00,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:00,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:00,360 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] [2023-11-21 22:27:00,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:00,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-21 22:27:00,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:27:00,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1218953494, now seen corresponding path program 1 times [2023-11-21 22:27:00,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:00,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657050796] [2023-11-21 22:27:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:00,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:00,609 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:27:00,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373347743] [2023-11-21 22:27:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:00,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:00,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:27:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:00,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-21 22:27:00,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:01,001 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 [2023-11-21 22:27:01,028 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 [2023-11-21 22:27:01,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:01,061 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 [2023-11-21 22:27:01,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:01,109 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 [2023-11-21 22:27:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:01,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:27:01,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657050796] [2023-11-21 22:27:01,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:27:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373347743] [2023-11-21 22:27:01,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373347743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:01,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:01,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-21 22:27:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385592952] [2023-11-21 22:27:01,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:01,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:27:01,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:01,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:27:01,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:27:02,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 322 [2023-11-21 22:27:02,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 305 transitions, 640 flow. Second operand has 13 states, 13 states have (on average 218.92307692307693) internal successors, (2846), 13 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:02,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:02,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 322 [2023-11-21 22:27:02,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:03,595 INFO L124 PetriNetUnfolderBase]: 1237/3934 cut-off events. [2023-11-21 22:27:03,595 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:27:03,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6168 conditions, 3934 events. 1237/3934 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 30287 event pairs, 1026 based on Foata normal form. 0/3544 useless extension candidates. Maximal degree in co-relation 5731. Up to 1962 conditions per place. [2023-11-21 22:27:03,630 INFO L140 encePairwiseOnDemand]: 302/322 looper letters, 89 selfloop transitions, 19 changer transitions 0/315 dead transitions. [2023-11-21 22:27:03,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 315 transitions, 876 flow [2023-11-21 22:27:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:27:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-21 22:27:03,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3549 transitions. [2023-11-21 22:27:03,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.688858695652174 [2023-11-21 22:27:03,643 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3549 transitions. [2023-11-21 22:27:03,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3549 transitions. [2023-11-21 22:27:03,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:03,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3549 transitions. [2023-11-21 22:27:03,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 221.8125) internal successors, (3549), 16 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:03,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 322.0) internal successors, (5474), 17 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:03,688 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 322.0) internal successors, (5474), 17 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:03,688 INFO L175 Difference]: Start difference. First operand has 311 places, 305 transitions, 640 flow. Second operand 16 states and 3549 transitions. [2023-11-21 22:27:03,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 315 transitions, 876 flow [2023-11-21 22:27:03,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 315 transitions, 866 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:27:03,697 INFO L231 Difference]: Finished difference. Result has 321 places, 305 transitions, 672 flow [2023-11-21 22:27:03,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=672, PETRI_PLACES=321, PETRI_TRANSITIONS=305} [2023-11-21 22:27:03,701 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, 9 predicate places. [2023-11-21 22:27:03,701 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 305 transitions, 672 flow [2023-11-21 22:27:03,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 218.92307692307693) internal successors, (2846), 13 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:03,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:03,703 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] [2023-11-21 22:27:03,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:03,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 22:27:03,924 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:27:03,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2097885433, now seen corresponding path program 1 times [2023-11-21 22:27:03,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:03,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994834675] [2023-11-21 22:27:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:03,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:03,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:27:03,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327736025] [2023-11-21 22:27:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:03,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:03,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:03,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:03,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:27:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-21 22:27:04,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:04,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:27:04,359 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 [2023-11-21 22:27:04,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:04,392 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 [2023-11-21 22:27:04,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:04,431 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 [2023-11-21 22:27:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:04,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:27:04,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:04,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994834675] [2023-11-21 22:27:04,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:27:04,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327736025] [2023-11-21 22:27:04,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327736025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:04,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:04,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-21 22:27:04,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167144751] [2023-11-21 22:27:04,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:04,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:27:04,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:04,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:27:04,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:27:05,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 322 [2023-11-21 22:27:05,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 305 transitions, 672 flow. Second operand has 13 states, 13 states have (on average 218.92307692307693) internal successors, (2846), 13 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:05,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:05,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 322 [2023-11-21 22:27:05,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:06,872 INFO L124 PetriNetUnfolderBase]: 1237/3930 cut-off events. [2023-11-21 22:27:06,872 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-21 22:27:06,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6224 conditions, 3930 events. 1237/3930 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 30193 event pairs, 1026 based on Foata normal form. 0/3544 useless extension candidates. Maximal degree in co-relation 5524. Up to 1962 conditions per place. [2023-11-21 22:27:06,898 INFO L140 encePairwiseOnDemand]: 302/322 looper letters, 89 selfloop transitions, 19 changer transitions 0/314 dead transitions. [2023-11-21 22:27:06,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 314 transitions, 906 flow [2023-11-21 22:27:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:27:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-21 22:27:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3549 transitions. [2023-11-21 22:27:06,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.688858695652174 [2023-11-21 22:27:06,911 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3549 transitions. [2023-11-21 22:27:06,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3549 transitions. [2023-11-21 22:27:06,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:06,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3549 transitions. [2023-11-21 22:27:06,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 221.8125) internal successors, (3549), 16 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:06,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 322.0) internal successors, (5474), 17 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:06,939 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 322.0) internal successors, (5474), 17 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:06,939 INFO L175 Difference]: Start difference. First operand has 321 places, 305 transitions, 672 flow. Second operand 16 states and 3549 transitions. [2023-11-21 22:27:06,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 314 transitions, 906 flow [2023-11-21 22:27:06,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 314 transitions, 870 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-21 22:27:06,948 INFO L231 Difference]: Finished difference. Result has 321 places, 304 transitions, 672 flow [2023-11-21 22:27:06,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=672, PETRI_PLACES=321, PETRI_TRANSITIONS=304} [2023-11-21 22:27:06,950 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, 9 predicate places. [2023-11-21 22:27:06,950 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 304 transitions, 672 flow [2023-11-21 22:27:06,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 218.92307692307693) internal successors, (2846), 13 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:06,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:06,952 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] [2023-11-21 22:27:06,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:07,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:07,167 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:27:07,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:07,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1843897254, now seen corresponding path program 1 times [2023-11-21 22:27:07,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:07,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311387594] [2023-11-21 22:27:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:07,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:07,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:27:07,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299744738] [2023-11-21 22:27:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:07,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:07,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:07,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:07,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:27:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:07,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:27:07,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:07,465 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 [2023-11-21 22:27:07,474 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 [2023-11-21 22:27:07,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:07,492 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 [2023-11-21 22:27:07,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:07,517 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 [2023-11-21 22:27:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:07,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:27:07,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:07,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311387594] [2023-11-21 22:27:07,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:27:07,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299744738] [2023-11-21 22:27:07,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299744738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:07,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:07,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:27:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571623164] [2023-11-21 22:27:07,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:07,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:27:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:07,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:27:07,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:27:07,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 322 [2023-11-21 22:27:07,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 304 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 234.5) internal successors, (1407), 6 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:07,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:07,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 322 [2023-11-21 22:27:07,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:08,352 INFO L124 PetriNetUnfolderBase]: 450/2090 cut-off events. [2023-11-21 22:27:08,352 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:27:08,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3214 conditions, 2090 events. 450/2090 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12412 event pairs, 342 based on Foata normal form. 0/1893 useless extension candidates. Maximal degree in co-relation 2549. Up to 964 conditions per place. [2023-11-21 22:27:08,370 INFO L140 encePairwiseOnDemand]: 316/322 looper letters, 80 selfloop transitions, 5 changer transitions 0/303 dead transitions. [2023-11-21 22:27:08,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 303 transitions, 840 flow [2023-11-21 22:27:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:27:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:27:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1448 transitions. [2023-11-21 22:27:08,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7494824016563147 [2023-11-21 22:27:08,377 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1448 transitions. [2023-11-21 22:27:08,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1448 transitions. [2023-11-21 22:27:08,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:08,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1448 transitions. [2023-11-21 22:27:08,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.33333333333334) internal successors, (1448), 6 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:08,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:08,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:08,389 INFO L175 Difference]: Start difference. First operand has 321 places, 304 transitions, 672 flow. Second operand 6 states and 1448 transitions. [2023-11-21 22:27:08,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 303 transitions, 840 flow [2023-11-21 22:27:08,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 303 transitions, 802 flow, removed 0 selfloop flow, removed 15 redundant places. [2023-11-21 22:27:08,397 INFO L231 Difference]: Finished difference. Result has 310 places, 303 transitions, 642 flow [2023-11-21 22:27:08,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=642, PETRI_PLACES=310, PETRI_TRANSITIONS=303} [2023-11-21 22:27:08,399 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, -2 predicate places. [2023-11-21 22:27:08,399 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 303 transitions, 642 flow [2023-11-21 22:27:08,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 234.5) internal successors, (1407), 6 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:08,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:08,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:08,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:08,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 22:27:08,623 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:27:08,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash 609759754, now seen corresponding path program 1 times [2023-11-21 22:27:08,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:08,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645161877] [2023-11-21 22:27:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:08,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:08,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:27:08,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725436922] [2023-11-21 22:27:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:08,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:08,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:08,703 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:08,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:27:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:09,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:27:09,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:09,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:09,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:09,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645161877] [2023-11-21 22:27:09,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:27:09,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725436922] [2023-11-21 22:27:09,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725436922] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:09,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:27:09,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-21 22:27:09,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062623451] [2023-11-21 22:27:09,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:09,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:27:09,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:09,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:27:09,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:27:09,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 322 [2023-11-21 22:27:09,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 303 transitions, 642 flow. Second operand has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:09,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:09,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 322 [2023-11-21 22:27:09,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:09,679 INFO L124 PetriNetUnfolderBase]: 29/971 cut-off events. [2023-11-21 22:27:09,680 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:27:09,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 971 events. 29/971 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1917 event pairs, 18 based on Foata normal form. 4/939 useless extension candidates. Maximal degree in co-relation 521. Up to 49 conditions per place. [2023-11-21 22:27:09,686 INFO L140 encePairwiseOnDemand]: 316/322 looper letters, 15 selfloop transitions, 9 changer transitions 0/311 dead transitions. [2023-11-21 22:27:09,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 311 transitions, 708 flow [2023-11-21 22:27:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:27:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:27:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2708 transitions. [2023-11-21 22:27:09,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9344375431331953 [2023-11-21 22:27:09,697 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2708 transitions. [2023-11-21 22:27:09,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2708 transitions. [2023-11-21 22:27:09,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:09,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2708 transitions. [2023-11-21 22:27:09,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 300.8888888888889) internal successors, (2708), 9 states have internal predecessors, (2708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:09,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 322.0) internal successors, (3220), 10 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:09,717 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 322.0) internal successors, (3220), 10 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:09,717 INFO L175 Difference]: Start difference. First operand has 310 places, 303 transitions, 642 flow. Second operand 9 states and 2708 transitions. [2023-11-21 22:27:09,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 311 transitions, 708 flow [2023-11-21 22:27:09,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 311 transitions, 698 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:27:09,727 INFO L231 Difference]: Finished difference. Result has 316 places, 309 transitions, 682 flow [2023-11-21 22:27:09,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=682, PETRI_PLACES=316, PETRI_TRANSITIONS=309} [2023-11-21 22:27:09,728 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, 4 predicate places. [2023-11-21 22:27:09,728 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 309 transitions, 682 flow [2023-11-21 22:27:09,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:09,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:09,730 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] [2023-11-21 22:27:09,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:09,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:09,948 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:27:09,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:09,948 INFO L85 PathProgramCache]: Analyzing trace with hash -134445430, now seen corresponding path program 2 times [2023-11-21 22:27:09,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:09,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583585603] [2023-11-21 22:27:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:09,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:10,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:27:10,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313788937] [2023-11-21 22:27:10,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:27:10,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:10,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:10,052 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:10,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:27:10,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:27:10,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:27:10,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:27:10,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:10,449 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 [2023-11-21 22:27:10,460 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 [2023-11-21 22:27:10,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:10,485 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 [2023-11-21 22:27:10,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:10,515 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 [2023-11-21 22:27:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-21 22:27:10,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:27:10,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:10,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583585603] [2023-11-21 22:27:10,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:27:10,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313788937] [2023-11-21 22:27:10,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313788937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:10,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:10,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:27:10,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73530008] [2023-11-21 22:27:10,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:10,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:27:10,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:27:10,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:27:11,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 322 [2023-11-21 22:27:11,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 309 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 261.5) internal successors, (1569), 6 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:11,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:11,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 322 [2023-11-21 22:27:11,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:12,093 INFO L124 PetriNetUnfolderBase]: 199/1864 cut-off events. [2023-11-21 22:27:12,094 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-21 22:27:12,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2495 conditions, 1864 events. 199/1864 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 8800 event pairs, 54 based on Foata normal form. 0/1721 useless extension candidates. Maximal degree in co-relation 1901. Up to 448 conditions per place. [2023-11-21 22:27:12,109 INFO L140 encePairwiseOnDemand]: 310/322 looper letters, 71 selfloop transitions, 23 changer transitions 0/344 dead transitions. [2023-11-21 22:27:12,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 344 transitions, 948 flow [2023-11-21 22:27:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:27:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:27:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1619 transitions. [2023-11-21 22:27:12,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.837991718426501 [2023-11-21 22:27:12,115 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1619 transitions. [2023-11-21 22:27:12,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1619 transitions. [2023-11-21 22:27:12,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:12,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1619 transitions. [2023-11-21 22:27:12,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.8333333333333) internal successors, (1619), 6 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:12,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:12,126 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:12,127 INFO L175 Difference]: Start difference. First operand has 316 places, 309 transitions, 682 flow. Second operand 6 states and 1619 transitions. [2023-11-21 22:27:12,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 344 transitions, 948 flow [2023-11-21 22:27:12,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 344 transitions, 942 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-21 22:27:12,136 INFO L231 Difference]: Finished difference. Result has 325 places, 331 transitions, 834 flow [2023-11-21 22:27:12,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=834, PETRI_PLACES=325, PETRI_TRANSITIONS=331} [2023-11-21 22:27:12,138 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, 13 predicate places. [2023-11-21 22:27:12,138 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 331 transitions, 834 flow [2023-11-21 22:27:12,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.5) internal successors, (1569), 6 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:12,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:12,139 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] [2023-11-21 22:27:12,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-21 22:27:12,360 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:27:12,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash 690564717, now seen corresponding path program 1 times [2023-11-21 22:27:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:12,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740298674] [2023-11-21 22:27:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:12,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:12,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:27:12,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538608670] [2023-11-21 22:27:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:12,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:12,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:12,435 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:12,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 22:27:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:12,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:27:12,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:13,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:13,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:13,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740298674] [2023-11-21 22:27:13,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:27:13,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538608670] [2023-11-21 22:27:13,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538608670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:13,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:27:13,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-21 22:27:13,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413933031] [2023-11-21 22:27:13,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:13,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 22:27:13,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 22:27:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:27:13,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 322 [2023-11-21 22:27:13,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 331 transitions, 834 flow. Second operand has 16 states, 16 states have (on average 300.0625) internal successors, (4801), 16 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:13,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:13,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 322 [2023-11-21 22:27:13,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:15,129 INFO L124 PetriNetUnfolderBase]: 185/2762 cut-off events. [2023-11-21 22:27:15,129 INFO L125 PetriNetUnfolderBase]: For 108/112 co-relation queries the response was YES. [2023-11-21 22:27:15,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 2762 events. 185/2762 cut-off events. For 108/112 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9732 event pairs, 55 based on Foata normal form. 8/2610 useless extension candidates. Maximal degree in co-relation 2103. Up to 144 conditions per place. [2023-11-21 22:27:15,146 INFO L140 encePairwiseOnDemand]: 316/322 looper letters, 19 selfloop transitions, 21 changer transitions 0/349 dead transitions. [2023-11-21 22:27:15,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 349 transitions, 1002 flow [2023-11-21 22:27:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-21 22:27:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-21 22:27:15,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6302 transitions. [2023-11-21 22:27:15,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9319727891156463 [2023-11-21 22:27:15,162 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6302 transitions. [2023-11-21 22:27:15,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6302 transitions. [2023-11-21 22:27:15,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:15,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6302 transitions. [2023-11-21 22:27:15,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 300.0952380952381) internal successors, (6302), 21 states have internal predecessors, (6302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:15,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 322.0) internal successors, (7084), 22 states have internal predecessors, (7084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:15,194 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 322.0) internal successors, (7084), 22 states have internal predecessors, (7084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:15,194 INFO L175 Difference]: Start difference. First operand has 325 places, 331 transitions, 834 flow. Second operand 21 states and 6302 transitions. [2023-11-21 22:27:15,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 349 transitions, 1002 flow [2023-11-21 22:27:15,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 349 transitions, 1002 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:27:15,203 INFO L231 Difference]: Finished difference. Result has 350 places, 344 transitions, 964 flow [2023-11-21 22:27:15,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=964, PETRI_PLACES=350, PETRI_TRANSITIONS=344} [2023-11-21 22:27:15,205 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, 38 predicate places. [2023-11-21 22:27:15,205 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 344 transitions, 964 flow [2023-11-21 22:27:15,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 300.0625) internal successors, (4801), 16 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:15,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:15,207 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] [2023-11-21 22:27:15,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:15,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 22:27:15,423 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:27:15,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:15,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1224607891, now seen corresponding path program 2 times [2023-11-21 22:27:15,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:15,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926718819] [2023-11-21 22:27:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:15,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:15,586 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:27:15,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613781089] [2023-11-21 22:27:15,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:27:15,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:15,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:15,591 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:15,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 22:27:16,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:27:16,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:27:16,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:27:16,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:16,211 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 [2023-11-21 22:27:16,220 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 [2023-11-21 22:27:16,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:16,237 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 [2023-11-21 22:27:16,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:16,262 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 [2023-11-21 22:27:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2023-11-21 22:27:16,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:27:16,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:16,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926718819] [2023-11-21 22:27:16,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:27:16,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613781089] [2023-11-21 22:27:16,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613781089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:16,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:27:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050806055] [2023-11-21 22:27:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:16,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:27:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:16,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:27:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:27:17,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 322 [2023-11-21 22:27:17,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 344 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 261.6666666666667) internal successors, (1570), 6 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:17,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:17,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 322 [2023-11-21 22:27:17,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:18,641 INFO L124 PetriNetUnfolderBase]: 310/3318 cut-off events. [2023-11-21 22:27:18,641 INFO L125 PetriNetUnfolderBase]: For 336/370 co-relation queries the response was YES. [2023-11-21 22:27:18,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4844 conditions, 3318 events. 310/3318 cut-off events. For 336/370 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 15704 event pairs, 61 based on Foata normal form. 8/3112 useless extension candidates. Maximal degree in co-relation 3686. Up to 805 conditions per place. [2023-11-21 22:27:18,661 INFO L140 encePairwiseOnDemand]: 310/322 looper letters, 84 selfloop transitions, 31 changer transitions 0/383 dead transitions. [2023-11-21 22:27:18,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 383 transitions, 1314 flow [2023-11-21 22:27:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:27:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:27:18,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1615 transitions. [2023-11-21 22:27:18,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8359213250517599 [2023-11-21 22:27:18,665 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1615 transitions. [2023-11-21 22:27:18,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1615 transitions. [2023-11-21 22:27:18,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:18,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1615 transitions. [2023-11-21 22:27:18,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.1666666666667) internal successors, (1615), 6 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:18,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:18,673 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:18,673 INFO L175 Difference]: Start difference. First operand has 350 places, 344 transitions, 964 flow. Second operand 6 states and 1615 transitions. [2023-11-21 22:27:18,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 383 transitions, 1314 flow [2023-11-21 22:27:18,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 383 transitions, 1290 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-21 22:27:18,685 INFO L231 Difference]: Finished difference. Result has 354 places, 374 transitions, 1198 flow [2023-11-21 22:27:18,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1198, PETRI_PLACES=354, PETRI_TRANSITIONS=374} [2023-11-21 22:27:18,687 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, 42 predicate places. [2023-11-21 22:27:18,687 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 374 transitions, 1198 flow [2023-11-21 22:27:18,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.6666666666667) internal successors, (1570), 6 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:18,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:18,688 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] [2023-11-21 22:27:18,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:18,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 22:27:18,911 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:27:18,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:18,912 INFO L85 PathProgramCache]: Analyzing trace with hash 937975251, now seen corresponding path program 1 times [2023-11-21 22:27:18,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:18,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616138961] [2023-11-21 22:27:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:18,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:19,060 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:27:19,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12196467] [2023-11-21 22:27:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:19,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:19,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:19,062 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:19,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 22:27:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:20,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:27:20,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:21,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:22,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:22,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616138961] [2023-11-21 22:27:22,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:27:22,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12196467] [2023-11-21 22:27:22,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12196467] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:22,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:27:22,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-21 22:27:22,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471373169] [2023-11-21 22:27:22,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:22,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-21 22:27:22,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-21 22:27:22,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-21 22:27:22,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 322 [2023-11-21 22:27:22,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 374 transitions, 1198 flow. Second operand has 32 states, 32 states have (on average 300.0) internal successors, (9600), 32 states have internal predecessors, (9600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:22,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:22,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 322 [2023-11-21 22:27:22,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:24,567 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([595] L1039-3-->L1044-2: Formula: (and (= (store |v_#pthreadsMutex_12| |v_~#c~0.base_21| (store (select |v_#pthreadsMutex_12| |v_~#c~0.base_21|) (+ (* |v_fThread1of1ForFork0_~j~0#1_29| 24) |v_~#c~0.offset_19| 80) 0)) |v_#pthreadsMutex_11|) (= |v_fThread1of1ForFork0_#t~nondet20#1_1| 0)) InVars {~#c~0.base=|v_~#c~0.base_21|, #pthreadsMutex=|v_#pthreadsMutex_12|, fThread1of1ForFork0_~j~0#1=|v_fThread1of1ForFork0_~j~0#1_29|, ~#c~0.offset=|v_~#c~0.offset_19|} OutVars{~#c~0.base=|v_~#c~0.base_21|, #pthreadsMutex=|v_#pthreadsMutex_11|, fThread1of1ForFork0_~j~0#1=|v_fThread1of1ForFork0_~j~0#1_29|, fThread1of1ForFork0_#t~nondet20#1=|v_fThread1of1ForFork0_#t~nondet20#1_1|, ~#c~0.offset=|v_~#c~0.offset_19|} AuxVars[] AssignedVars[#pthreadsMutex, fThread1of1ForFork0_#t~nondet20#1][302], [154#L1044-2true, 4436#true, 229#ULTIMATE.startFINALtrue, 8826#true, Black: 4417#(= (select (select |#race| |~#c~0.base|) (+ |~#c~0.offset| (* 8 |fThread1of1ForFork1_~j~0#1|))) 0), Black: 525#(= |ULTIMATE.start_main_~j~1#1| 0), Black: 333#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 4429#(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: 4425#(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)), 6642#true, Black: 4421#(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)), 61#L1044-2true, 2310#true, Black: 2722#(<= |ULTIMATE.start_main_~j~1#1| 1), Black: 2939#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 5937#(< |ULTIMATE.start_main_~j~1#1| 28), Black: 5398#(<= |ULTIMATE.start_main_~j~1#1| 3), Black: 5662#(< |ULTIMATE.start_main_~j~1#1| 29), Black: 5651#(< |ULTIMATE.start_main_~j~1#1| 30), Black: 8811#(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)), 1402#(= 0 |ULTIMATE.start_new_#res#1.offset|), Black: 8807#(= (select (select |#race| |~#c~0.base|) (+ (* |fThread1of1ForFork0_~j~0#1| 8) |~#c~0.offset|)) 0), Black: 8819#(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: 8815#(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)), fThread1of1ForFork0InUse, fThread1of1ForFork1InUse, 3362#true]) [2023-11-21 22:27:24,567 INFO L294 olderBase$Statistics]: this new event has 1549 ancestors and is cut-off event [2023-11-21 22:27:24,567 INFO L297 olderBase$Statistics]: existing Event has 1522 ancestors and is cut-off event [2023-11-21 22:27:24,568 INFO L297 olderBase$Statistics]: existing Event has 1522 ancestors and is cut-off event [2023-11-21 22:27:24,568 INFO L297 olderBase$Statistics]: existing Event has 1522 ancestors and is cut-off event [2023-11-21 22:27:25,811 INFO L124 PetriNetUnfolderBase]: 339/5084 cut-off events. [2023-11-21 22:27:25,812 INFO L125 PetriNetUnfolderBase]: For 924/942 co-relation queries the response was YES. [2023-11-21 22:27:25,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6748 conditions, 5084 events. 339/5084 cut-off events. For 924/942 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 18300 event pairs, 100 based on Foata normal form. 22/4852 useless extension candidates. Maximal degree in co-relation 4108. Up to 255 conditions per place. [2023-11-21 22:27:25,837 INFO L140 encePairwiseOnDemand]: 316/322 looper letters, 27 selfloop transitions, 45 changer transitions 0/411 dead transitions. [2023-11-21 22:27:25,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 411 transitions, 1614 flow [2023-11-21 22:27:25,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-21 22:27:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-21 22:27:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 13490 transitions. [2023-11-21 22:27:25,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9309868875086267 [2023-11-21 22:27:25,855 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 13490 transitions. [2023-11-21 22:27:25,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 13490 transitions. [2023-11-21 22:27:25,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:25,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 13490 transitions. [2023-11-21 22:27:25,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 299.77777777777777) internal successors, (13490), 45 states have internal predecessors, (13490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:25,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 322.0) internal successors, (14812), 46 states have internal predecessors, (14812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:25,915 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 322.0) internal successors, (14812), 46 states have internal predecessors, (14812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:25,915 INFO L175 Difference]: Start difference. First operand has 354 places, 374 transitions, 1198 flow. Second operand 45 states and 13490 transitions. [2023-11-21 22:27:25,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 411 transitions, 1614 flow [2023-11-21 22:27:25,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 411 transitions, 1614 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:27:25,932 INFO L231 Difference]: Finished difference. Result has 407 places, 399 transitions, 1500 flow [2023-11-21 22:27:25,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1500, PETRI_PLACES=407, PETRI_TRANSITIONS=399} [2023-11-21 22:27:25,934 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, 95 predicate places. [2023-11-21 22:27:25,934 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 399 transitions, 1500 flow [2023-11-21 22:27:25,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 300.0) internal successors, (9600), 32 states have internal predecessors, (9600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:25,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:25,938 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] [2023-11-21 22:27:25,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:26,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 22:27:26,164 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:27:26,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1418956845, now seen corresponding path program 2 times [2023-11-21 22:27:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:26,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790006604] [2023-11-21 22:27:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:26,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:26,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:27:26,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890458657] [2023-11-21 22:27:26,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:27:26,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:26,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:26,447 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:26,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-21 22:27:27,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:27:27,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:27:27,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:27:27,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:27,690 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 [2023-11-21 22:27:27,697 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 [2023-11-21 22:27:27,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:27,712 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 [2023-11-21 22:27:27,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:27:27,732 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 [2023-11-21 22:27:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2023-11-21 22:27:27,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:27:27,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:27,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790006604] [2023-11-21 22:27:27,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:27:27,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890458657] [2023-11-21 22:27:27,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890458657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:27,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:27,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:27:27,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921943949] [2023-11-21 22:27:27,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:27,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:27:27,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:27,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:27:27,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:27:28,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 322 [2023-11-21 22:27:28,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 399 transitions, 1500 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:28,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:28,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 322 [2023-11-21 22:27:28,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:32,295 INFO L124 PetriNetUnfolderBase]: 453/5329 cut-off events. [2023-11-21 22:27:32,295 INFO L125 PetriNetUnfolderBase]: For 1577/1669 co-relation queries the response was YES. [2023-11-21 22:27:32,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8601 conditions, 5329 events. 453/5329 cut-off events. For 1577/1669 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 21324 event pairs, 87 based on Foata normal form. 34/5132 useless extension candidates. Maximal degree in co-relation 6298. Up to 1419 conditions per place. [2023-11-21 22:27:32,336 INFO L140 encePairwiseOnDemand]: 311/322 looper letters, 108 selfloop transitions, 55 changer transitions 0/460 dead transitions. [2023-11-21 22:27:32,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 460 transitions, 2152 flow [2023-11-21 22:27:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:27:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:27:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1612 transitions. [2023-11-21 22:27:32,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8343685300207039 [2023-11-21 22:27:32,340 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1612 transitions. [2023-11-21 22:27:32,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1612 transitions. [2023-11-21 22:27:32,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:32,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1612 transitions. [2023-11-21 22:27:32,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.6666666666667) internal successors, (1612), 6 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:32,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:32,348 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:32,348 INFO L175 Difference]: Start difference. First operand has 407 places, 399 transitions, 1500 flow. Second operand 6 states and 1612 transitions. [2023-11-21 22:27:32,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 460 transitions, 2152 flow [2023-11-21 22:27:32,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 460 transitions, 2096 flow, removed 10 selfloop flow, removed 18 redundant places. [2023-11-21 22:27:32,374 INFO L231 Difference]: Finished difference. Result has 399 places, 448 transitions, 1998 flow [2023-11-21 22:27:32,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1998, PETRI_PLACES=399, PETRI_TRANSITIONS=448} [2023-11-21 22:27:32,375 INFO L281 CegarLoopForPetriNet]: 312 programPoint places, 87 predicate places. [2023-11-21 22:27:32,376 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 448 transitions, 1998 flow [2023-11-21 22:27:32,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:32,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:32,378 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] [2023-11-21 22:27:32,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:32,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-21 22:27:32,591 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:27:32,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:32,592 INFO L85 PathProgramCache]: Analyzing trace with hash 391007286, now seen corresponding path program 1 times [2023-11-21 22:27:32,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:32,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865033453] [2023-11-21 22:27:32,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:32,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:33,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:27:33,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42136280] [2023-11-21 22:27:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:33,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:33,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:33,010 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:33,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e5481c-b602-402e-a88b-046af533a45b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process