./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:03:10,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:03:10,711 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 06:03:10,716 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:03:10,717 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:03:10,740 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:03:10,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:03:10,741 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:03:10,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:03:10,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:03:10,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:03:10,744 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:03:10,745 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:03:10,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:03:10,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:03:10,746 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:03:10,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:03:10,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:03:10,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:03:10,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:03:10,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:03:10,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:03:10,750 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 06:03:10,750 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:03:10,750 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:03:10,751 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:03:10,751 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:03:10,752 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:03:10,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:03:10,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:03:10,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:03:10,753 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:03:10,754 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:03:10,754 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:03:10,754 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:03:10,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:03:10,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:03:10,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:03:10,755 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:03:10,755 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:03:10,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:03:10,756 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_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e [2023-11-29 06:03:10,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:03:10,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:03:10,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:03:10,971 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:03:10,971 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:03:10,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i [2023-11-29 06:03:13,743 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:03:13,970 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:03:13,971 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i [2023-11-29 06:03:13,988 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/data/b4a214fd1/1e451a76552e46879085d34d53885761/FLAGad136e036 [2023-11-29 06:03:14,002 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/data/b4a214fd1/1e451a76552e46879085d34d53885761 [2023-11-29 06:03:14,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:03:14,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:03:14,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:03:14,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:03:14,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:03:14,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0a6d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14, skipping insertion in model container [2023-11-29 06:03:14,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,069 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:03:14,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:03:14,500 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:03:14,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:03:14,608 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:03:14,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14 WrapperNode [2023-11-29 06:03:14,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:03:14,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:03:14,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:03:14,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:03:14,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,663 INFO L138 Inliner]: procedures = 263, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 124 [2023-11-29 06:03:14,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:03:14,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:03:14,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:03:14,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:03:14,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:03:14,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:03:14,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:03:14,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:03:14,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (1/1) ... [2023-11-29 06:03:14,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:03:14,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:14,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:03:14,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:03:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:03:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:03:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 06:03:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 06:03:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 06:03:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 06:03:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:03:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 06:03:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 06:03:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:03:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:03:14,788 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:03:14,907 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:03:14,909 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:03:15,132 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:03:15,160 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:03:15,160 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 06:03:15,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:03:15 BoogieIcfgContainer [2023-11-29 06:03:15,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:03:15,165 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:03:15,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:03:15,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:03:15,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:03:14" (1/3) ... [2023-11-29 06:03:15,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bd7691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:03:15, skipping insertion in model container [2023-11-29 06:03:15,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:14" (2/3) ... [2023-11-29 06:03:15,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bd7691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:03:15, skipping insertion in model container [2023-11-29 06:03:15,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:03:15" (3/3) ... [2023-11-29 06:03:15,171 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_04-funloop_hard1.i [2023-11-29 06:03:15,179 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:03:15,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:03:15,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 06:03:15,190 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:03:15,259 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 06:03:15,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 260 flow [2023-11-29 06:03:15,379 INFO L124 PetriNetUnfolderBase]: 6/127 cut-off events. [2023-11-29 06:03:15,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:03:15,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 6/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 236 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-29 06:03:15,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 128 transitions, 260 flow [2023-11-29 06:03:15,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 127 transitions, 257 flow [2023-11-29 06:03:15,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:03:15,413 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;@2fee78c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:03:15,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-29 06:03:15,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:03:15,429 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2023-11-29 06:03:15,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:03:15,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:15,430 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] [2023-11-29 06:03:15,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:15,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1877440983, now seen corresponding path program 1 times [2023-11-29 06:03:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:15,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116493671] [2023-11-29 06:03:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:15,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:15,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116493671] [2023-11-29 06:03:15,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116493671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:15,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:15,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:03:15,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855795944] [2023-11-29 06:03:15,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:15,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:03:15,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:03:15,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:03:15,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 128 [2023-11-29 06:03:15,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 127 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:15,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:15,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 128 [2023-11-29 06:03:15,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:15,848 INFO L124 PetriNetUnfolderBase]: 15/268 cut-off events. [2023-11-29 06:03:15,848 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:03:15,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 268 events. 15/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 959 event pairs, 10 based on Foata normal form. 12/259 useless extension candidates. Maximal degree in co-relation 272. Up to 36 conditions per place. [2023-11-29 06:03:15,853 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 12 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2023-11-29 06:03:15,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 125 transitions, 281 flow [2023-11-29 06:03:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:03:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:03:15,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-11-29 06:03:15,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9244791666666666 [2023-11-29 06:03:15,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-11-29 06:03:15,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-11-29 06:03:15,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:15,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-11-29 06:03:15,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:15,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:15,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:15,887 INFO L175 Difference]: Start difference. First operand has 125 places, 127 transitions, 257 flow. Second operand 3 states and 355 transitions. [2023-11-29 06:03:15,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 125 transitions, 281 flow [2023-11-29 06:03:15,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:03:15,895 INFO L231 Difference]: Finished difference. Result has 127 places, 125 transitions, 262 flow [2023-11-29 06:03:15,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2023-11-29 06:03:15,901 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 2 predicate places. [2023-11-29 06:03:15,901 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 262 flow [2023-11-29 06:03:15,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:15,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:15,902 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] [2023-11-29 06:03:15,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:03:15,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:15,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:15,903 INFO L85 PathProgramCache]: Analyzing trace with hash -872710918, now seen corresponding path program 1 times [2023-11-29 06:03:15,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:15,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663093686] [2023-11-29 06:03:15,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:15,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:16,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:16,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663093686] [2023-11-29 06:03:16,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663093686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:16,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479272986] [2023-11-29 06:03:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:16,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:16,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:16,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:16,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:03:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:16,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:03:16,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:16,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:03:16,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:03:16,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479272986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:16,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:03:16,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 06:03:16,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589576628] [2023-11-29 06:03:16,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:16,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:03:16,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:03:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:03:16,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 128 [2023-11-29 06:03:16,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:16,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:16,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 128 [2023-11-29 06:03:16,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:16,345 INFO L124 PetriNetUnfolderBase]: 35/428 cut-off events. [2023-11-29 06:03:16,345 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:03:16,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 428 events. 35/428 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1757 event pairs, 10 based on Foata normal form. 3/397 useless extension candidates. Maximal degree in co-relation 487. Up to 51 conditions per place. [2023-11-29 06:03:16,351 INFO L140 encePairwiseOnDemand]: 125/128 looper letters, 16 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-11-29 06:03:16,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 130 transitions, 308 flow [2023-11-29 06:03:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:03:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:03:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-11-29 06:03:16,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9244791666666666 [2023-11-29 06:03:16,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-11-29 06:03:16,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-11-29 06:03:16,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:16,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-11-29 06:03:16,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:16,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:16,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:16,361 INFO L175 Difference]: Start difference. First operand has 127 places, 125 transitions, 262 flow. Second operand 3 states and 355 transitions. [2023-11-29 06:03:16,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 130 transitions, 308 flow [2023-11-29 06:03:16,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 130 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:03:16,367 INFO L231 Difference]: Finished difference. Result has 129 places, 126 transitions, 272 flow [2023-11-29 06:03:16,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=129, PETRI_TRANSITIONS=126} [2023-11-29 06:03:16,368 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 4 predicate places. [2023-11-29 06:03:16,368 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 126 transitions, 272 flow [2023-11-29 06:03:16,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:16,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:16,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:16,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:03:16,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:16,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:16,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2113158627, now seen corresponding path program 1 times [2023-11-29 06:03:16,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:16,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8851612] [2023-11-29 06:03:16,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:16,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:16,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8851612] [2023-11-29 06:03:16,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8851612] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841549093] [2023-11-29 06:03:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:16,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:16,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:16,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:16,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:03:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:16,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:03:16,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:16,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:03:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:16,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841549093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:03:16,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:03:16,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 06:03:16,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135576130] [2023-11-29 06:03:16,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:03:16,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:03:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:16,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:03:16,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:03:16,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 128 [2023-11-29 06:03:16,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 126 transitions, 272 flow. Second operand has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:16,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:16,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 128 [2023-11-29 06:03:16,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:17,098 INFO L124 PetriNetUnfolderBase]: 24/432 cut-off events. [2023-11-29 06:03:17,098 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:03:17,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 432 events. 24/432 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1565 event pairs, 14 based on Foata normal form. 2/400 useless extension candidates. Maximal degree in co-relation 460. Up to 51 conditions per place. [2023-11-29 06:03:17,102 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 16 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2023-11-29 06:03:17,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 134 transitions, 340 flow [2023-11-29 06:03:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:03:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 06:03:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1008 transitions. [2023-11-29 06:03:17,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.875 [2023-11-29 06:03:17,106 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1008 transitions. [2023-11-29 06:03:17,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1008 transitions. [2023-11-29 06:03:17,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:17,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1008 transitions. [2023-11-29 06:03:17,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.0) internal successors, (1008), 9 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:17,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:17,117 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:17,117 INFO L175 Difference]: Start difference. First operand has 129 places, 126 transitions, 272 flow. Second operand 9 states and 1008 transitions. [2023-11-29 06:03:17,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 134 transitions, 340 flow [2023-11-29 06:03:17,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 134 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:03:17,122 INFO L231 Difference]: Finished difference. Result has 139 places, 132 transitions, 320 flow [2023-11-29 06:03:17,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=320, PETRI_PLACES=139, PETRI_TRANSITIONS=132} [2023-11-29 06:03:17,123 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 14 predicate places. [2023-11-29 06:03:17,123 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 132 transitions, 320 flow [2023-11-29 06:03:17,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:17,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:17,125 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:17,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:03:17,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:17,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:17,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash -68984835, now seen corresponding path program 2 times [2023-11-29 06:03:17,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:17,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019432059] [2023-11-29 06:03:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:17,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:17,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019432059] [2023-11-29 06:03:17,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019432059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571892843] [2023-11-29 06:03:17,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:03:17,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:17,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:17,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:17,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:03:17,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:03:17,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:03:17,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:03:17,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:17,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:03:17,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 06:03:17,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:03:17,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 06:03:17,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:03:17,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 06:03:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:03:17,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:03:17,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571892843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:17,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:03:17,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-11-29 06:03:17,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084654854] [2023-11-29 06:03:17,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:17,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:03:17,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:17,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:03:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:03:18,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:03:18,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 132 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:18,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:18,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:03:18,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:18,382 INFO L124 PetriNetUnfolderBase]: 333/1500 cut-off events. [2023-11-29 06:03:18,383 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 06:03:18,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 1500 events. 333/1500 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10232 event pairs, 160 based on Foata normal form. 0/1410 useless extension candidates. Maximal degree in co-relation 2158. Up to 544 conditions per place. [2023-11-29 06:03:18,392 INFO L140 encePairwiseOnDemand]: 117/128 looper letters, 36 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2023-11-29 06:03:18,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 161 transitions, 494 flow [2023-11-29 06:03:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:03:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:03:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 635 transitions. [2023-11-29 06:03:18,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8268229166666666 [2023-11-29 06:03:18,396 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 635 transitions. [2023-11-29 06:03:18,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 635 transitions. [2023-11-29 06:03:18,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:18,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 635 transitions. [2023-11-29 06:03:18,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:18,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:18,402 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:18,403 INFO L175 Difference]: Start difference. First operand has 139 places, 132 transitions, 320 flow. Second operand 6 states and 635 transitions. [2023-11-29 06:03:18,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 161 transitions, 494 flow [2023-11-29 06:03:18,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 161 transitions, 488 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 06:03:18,408 INFO L231 Difference]: Finished difference. Result has 148 places, 153 transitions, 464 flow [2023-11-29 06:03:18,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=148, PETRI_TRANSITIONS=153} [2023-11-29 06:03:18,410 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 23 predicate places. [2023-11-29 06:03:18,410 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 153 transitions, 464 flow [2023-11-29 06:03:18,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:18,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:18,411 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:18,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:03:18,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:18,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:18,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:18,613 INFO L85 PathProgramCache]: Analyzing trace with hash -5944653, now seen corresponding path program 1 times [2023-11-29 06:03:18,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:18,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725635216] [2023-11-29 06:03:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:18,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:18,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:18,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725635216] [2023-11-29 06:03:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725635216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:18,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346961651] [2023-11-29 06:03:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:18,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:18,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:18,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:18,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:03:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:18,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:03:18,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:18,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:03:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:19,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346961651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:03:19,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:03:19,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 06:03:19,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950465075] [2023-11-29 06:03:19,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:03:19,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:03:19,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:03:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:03:19,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 128 [2023-11-29 06:03:19,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 153 transitions, 464 flow. Second operand has 18 states, 18 states have (on average 111.0) internal successors, (1998), 18 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:19,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:19,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 128 [2023-11-29 06:03:19,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:19,373 INFO L124 PetriNetUnfolderBase]: 118/1052 cut-off events. [2023-11-29 06:03:19,374 INFO L125 PetriNetUnfolderBase]: For 77/83 co-relation queries the response was YES. [2023-11-29 06:03:19,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 1052 events. 118/1052 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5892 event pairs, 24 based on Foata normal form. 4/982 useless extension candidates. Maximal degree in co-relation 1420. Up to 133 conditions per place. [2023-11-29 06:03:19,379 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 20 selfloop transitions, 21 changer transitions 0/171 dead transitions. [2023-11-29 06:03:19,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 171 transitions, 634 flow [2023-11-29 06:03:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:03:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 06:03:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2334 transitions. [2023-11-29 06:03:19,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8683035714285714 [2023-11-29 06:03:19,385 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2334 transitions. [2023-11-29 06:03:19,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2334 transitions. [2023-11-29 06:03:19,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:19,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2334 transitions. [2023-11-29 06:03:19,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 111.14285714285714) internal successors, (2334), 21 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:19,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:19,399 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:19,399 INFO L175 Difference]: Start difference. First operand has 148 places, 153 transitions, 464 flow. Second operand 21 states and 2334 transitions. [2023-11-29 06:03:19,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 171 transitions, 634 flow [2023-11-29 06:03:19,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 171 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 06:03:19,407 INFO L231 Difference]: Finished difference. Result has 173 places, 166 transitions, 594 flow [2023-11-29 06:03:19,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=594, PETRI_PLACES=173, PETRI_TRANSITIONS=166} [2023-11-29 06:03:19,408 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 48 predicate places. [2023-11-29 06:03:19,409 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 166 transitions, 594 flow [2023-11-29 06:03:19,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 111.0) internal successors, (1998), 18 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:19,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:19,410 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:19,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:03:19,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:19,613 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:19,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash -550044045, now seen corresponding path program 2 times [2023-11-29 06:03:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:19,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618469785] [2023-11-29 06:03:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:19,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:19,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:19,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618469785] [2023-11-29 06:03:19,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618469785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:19,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011167543] [2023-11-29 06:03:19,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:03:19,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:19,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:19,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:19,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:03:19,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:03:19,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:03:19,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:03:19,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:20,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:03:20,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 06:03:20,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:03:20,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-29 06:03:20,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:03:20,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-29 06:03:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 06:03:20,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:03:20,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011167543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:20,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:03:20,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2023-11-29 06:03:20,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246928029] [2023-11-29 06:03:20,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:20,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:03:20,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:20,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:03:20,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-11-29 06:03:20,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 128 [2023-11-29 06:03:20,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 166 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 90.3) internal successors, (903), 10 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:20,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:20,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 128 [2023-11-29 06:03:20,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:21,766 INFO L124 PetriNetUnfolderBase]: 1037/4006 cut-off events. [2023-11-29 06:03:21,766 INFO L125 PetriNetUnfolderBase]: For 725/801 co-relation queries the response was YES. [2023-11-29 06:03:21,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7259 conditions, 4006 events. 1037/4006 cut-off events. For 725/801 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 32938 event pairs, 373 based on Foata normal form. 37/3824 useless extension candidates. Maximal degree in co-relation 7121. Up to 1106 conditions per place. [2023-11-29 06:03:21,801 INFO L140 encePairwiseOnDemand]: 109/128 looper letters, 151 selfloop transitions, 33 changer transitions 0/297 dead transitions. [2023-11-29 06:03:21,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 297 transitions, 1348 flow [2023-11-29 06:03:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:03:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:03:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1036 transitions. [2023-11-29 06:03:21,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.809375 [2023-11-29 06:03:21,807 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1036 transitions. [2023-11-29 06:03:21,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1036 transitions. [2023-11-29 06:03:21,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:21,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1036 transitions. [2023-11-29 06:03:21,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.6) internal successors, (1036), 10 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:21,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:21,817 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:21,817 INFO L175 Difference]: Start difference. First operand has 173 places, 166 transitions, 594 flow. Second operand 10 states and 1036 transitions. [2023-11-29 06:03:21,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 297 transitions, 1348 flow [2023-11-29 06:03:21,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 297 transitions, 1324 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 06:03:21,829 INFO L231 Difference]: Finished difference. Result has 183 places, 197 transitions, 860 flow [2023-11-29 06:03:21,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=860, PETRI_PLACES=183, PETRI_TRANSITIONS=197} [2023-11-29 06:03:21,831 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 58 predicate places. [2023-11-29 06:03:21,831 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 197 transitions, 860 flow [2023-11-29 06:03:21,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.3) internal successors, (903), 10 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:21,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:21,832 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:21,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:03:22,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:22,033 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:22,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:22,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1701364689, now seen corresponding path program 1 times [2023-11-29 06:03:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:22,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118937282] [2023-11-29 06:03:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:22,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:22,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118937282] [2023-11-29 06:03:22,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118937282] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:22,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788932700] [2023-11-29 06:03:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:22,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:22,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:22,342 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:22,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:03:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:22,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:03:22,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:22,523 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:22,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:03:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:22,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788932700] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:03:22,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:03:22,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-29 06:03:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9866608] [2023-11-29 06:03:22,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:03:22,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:03:22,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:22,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:03:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:03:22,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 128 [2023-11-29 06:03:22,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 860 flow. Second operand has 23 states, 23 states have (on average 111.08695652173913) internal successors, (2555), 23 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:22,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:22,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 128 [2023-11-29 06:03:22,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:23,536 INFO L124 PetriNetUnfolderBase]: 340/2395 cut-off events. [2023-11-29 06:03:23,536 INFO L125 PetriNetUnfolderBase]: For 1341/1375 co-relation queries the response was YES. [2023-11-29 06:03:23,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4730 conditions, 2395 events. 340/2395 cut-off events. For 1341/1375 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 17911 event pairs, 101 based on Foata normal form. 3/2309 useless extension candidates. Maximal degree in co-relation 4508. Up to 316 conditions per place. [2023-11-29 06:03:23,558 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 23 selfloop transitions, 30 changer transitions 0/214 dead transitions. [2023-11-29 06:03:23,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 214 transitions, 1088 flow [2023-11-29 06:03:23,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 06:03:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 06:03:23,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3326 transitions. [2023-11-29 06:03:23,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8661458333333333 [2023-11-29 06:03:23,568 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3326 transitions. [2023-11-29 06:03:23,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3326 transitions. [2023-11-29 06:03:23,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:23,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3326 transitions. [2023-11-29 06:03:23,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 110.86666666666666) internal successors, (3326), 30 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:23,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 128.0) internal successors, (3968), 31 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:23,590 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 128.0) internal successors, (3968), 31 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:23,591 INFO L175 Difference]: Start difference. First operand has 183 places, 197 transitions, 860 flow. Second operand 30 states and 3326 transitions. [2023-11-29 06:03:23,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 214 transitions, 1088 flow [2023-11-29 06:03:23,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 214 transitions, 1084 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:03:23,604 INFO L231 Difference]: Finished difference. Result has 214 places, 207 transitions, 1008 flow [2023-11-29 06:03:23,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1008, PETRI_PLACES=214, PETRI_TRANSITIONS=207} [2023-11-29 06:03:23,605 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 89 predicate places. [2023-11-29 06:03:23,605 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 207 transitions, 1008 flow [2023-11-29 06:03:23,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 111.08695652173913) internal successors, (2555), 23 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:23,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:23,607 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:23,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:03:23,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 06:03:23,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:23,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash 770127828, now seen corresponding path program 2 times [2023-11-29 06:03:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:23,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880928871] [2023-11-29 06:03:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:23,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:03:24,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:24,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880928871] [2023-11-29 06:03:24,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880928871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:24,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:24,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:03:24,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474312832] [2023-11-29 06:03:24,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:24,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:03:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:03:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:03:24,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 128 [2023-11-29 06:03:24,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 207 transitions, 1008 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:24,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:24,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 128 [2023-11-29 06:03:24,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:25,413 INFO L124 PetriNetUnfolderBase]: 1567/5454 cut-off events. [2023-11-29 06:03:25,413 INFO L125 PetriNetUnfolderBase]: For 4253/4400 co-relation queries the response was YES. [2023-11-29 06:03:25,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13145 conditions, 5454 events. 1567/5454 cut-off events. For 4253/4400 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 44615 event pairs, 650 based on Foata normal form. 33/5244 useless extension candidates. Maximal degree in co-relation 12924. Up to 2690 conditions per place. [2023-11-29 06:03:25,450 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 87 selfloop transitions, 57 changer transitions 0/266 dead transitions. [2023-11-29 06:03:25,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 266 transitions, 1574 flow [2023-11-29 06:03:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:03:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:03:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 601 transitions. [2023-11-29 06:03:25,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7825520833333334 [2023-11-29 06:03:25,453 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 601 transitions. [2023-11-29 06:03:25,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 601 transitions. [2023-11-29 06:03:25,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:25,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 601 transitions. [2023-11-29 06:03:25,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:25,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:25,459 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:25,459 INFO L175 Difference]: Start difference. First operand has 214 places, 207 transitions, 1008 flow. Second operand 6 states and 601 transitions. [2023-11-29 06:03:25,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 266 transitions, 1574 flow [2023-11-29 06:03:25,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 266 transitions, 1528 flow, removed 5 selfloop flow, removed 18 redundant places. [2023-11-29 06:03:25,477 INFO L231 Difference]: Finished difference. Result has 206 places, 258 transitions, 1496 flow [2023-11-29 06:03:25,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1496, PETRI_PLACES=206, PETRI_TRANSITIONS=258} [2023-11-29 06:03:25,479 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 81 predicate places. [2023-11-29 06:03:25,479 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 258 transitions, 1496 flow [2023-11-29 06:03:25,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:25,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:25,480 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:25,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:03:25,480 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:25,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:25,481 INFO L85 PathProgramCache]: Analyzing trace with hash 532400891, now seen corresponding path program 1 times [2023-11-29 06:03:25,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:25,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2608223] [2023-11-29 06:03:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:25,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:03:25,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:25,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2608223] [2023-11-29 06:03:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2608223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:25,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:25,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:03:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691524488] [2023-11-29 06:03:25,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:25,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:03:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:03:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:03:26,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 128 [2023-11-29 06:03:26,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 258 transitions, 1496 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:26,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:26,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 128 [2023-11-29 06:03:26,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:27,618 INFO L124 PetriNetUnfolderBase]: 2306/7573 cut-off events. [2023-11-29 06:03:27,618 INFO L125 PetriNetUnfolderBase]: For 14578/14768 co-relation queries the response was YES. [2023-11-29 06:03:27,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21563 conditions, 7573 events. 2306/7573 cut-off events. For 14578/14768 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 64348 event pairs, 730 based on Foata normal form. 39/7358 useless extension candidates. Maximal degree in co-relation 21359. Up to 3780 conditions per place. [2023-11-29 06:03:27,660 INFO L140 encePairwiseOnDemand]: 105/128 looper letters, 134 selfloop transitions, 103 changer transitions 0/359 dead transitions. [2023-11-29 06:03:27,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 359 transitions, 2510 flow [2023-11-29 06:03:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:03:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:03:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2023-11-29 06:03:27,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8346354166666666 [2023-11-29 06:03:27,663 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 641 transitions. [2023-11-29 06:03:27,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 641 transitions. [2023-11-29 06:03:27,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:27,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 641 transitions. [2023-11-29 06:03:27,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:27,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:27,666 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:27,666 INFO L175 Difference]: Start difference. First operand has 206 places, 258 transitions, 1496 flow. Second operand 6 states and 641 transitions. [2023-11-29 06:03:27,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 359 transitions, 2510 flow [2023-11-29 06:03:27,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 359 transitions, 2410 flow, removed 50 selfloop flow, removed 0 redundant places. [2023-11-29 06:03:27,691 INFO L231 Difference]: Finished difference. Result has 216 places, 343 transitions, 2386 flow [2023-11-29 06:03:27,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2386, PETRI_PLACES=216, PETRI_TRANSITIONS=343} [2023-11-29 06:03:27,692 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 91 predicate places. [2023-11-29 06:03:27,692 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 343 transitions, 2386 flow [2023-11-29 06:03:27,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:27,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:27,693 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:27,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:03:27,694 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:27,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:27,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2058016118, now seen corresponding path program 1 times [2023-11-29 06:03:27,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:27,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482637016] [2023-11-29 06:03:27,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:27,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:03:28,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:28,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482637016] [2023-11-29 06:03:28,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482637016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:28,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667964813] [2023-11-29 06:03:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:28,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:28,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:28,782 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:28,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:03:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:28,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:03:28,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:29,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:03:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:03:29,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:03:29,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667964813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:29,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:03:29,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:03:29,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756626036] [2023-11-29 06:03:29,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:29,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:03:29,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:29,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:03:29,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:03:29,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:03:29,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 343 transitions, 2386 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:29,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:29,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:03:29,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:31,265 INFO L124 PetriNetUnfolderBase]: 1867/7419 cut-off events. [2023-11-29 06:03:31,265 INFO L125 PetriNetUnfolderBase]: For 14549/14825 co-relation queries the response was YES. [2023-11-29 06:03:31,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21232 conditions, 7419 events. 1867/7419 cut-off events. For 14549/14825 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 67365 event pairs, 312 based on Foata normal form. 44/7335 useless extension candidates. Maximal degree in co-relation 21011. Up to 1141 conditions per place. [2023-11-29 06:03:31,305 INFO L140 encePairwiseOnDemand]: 114/128 looper letters, 97 selfloop transitions, 16 changer transitions 0/421 dead transitions. [2023-11-29 06:03:31,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 421 transitions, 2904 flow [2023-11-29 06:03:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:03:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:03:31,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1049 transitions. [2023-11-29 06:03:31,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.81953125 [2023-11-29 06:03:31,309 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1049 transitions. [2023-11-29 06:03:31,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1049 transitions. [2023-11-29 06:03:31,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:31,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1049 transitions. [2023-11-29 06:03:31,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.9) internal successors, (1049), 10 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:31,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:31,316 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:31,316 INFO L175 Difference]: Start difference. First operand has 216 places, 343 transitions, 2386 flow. Second operand 10 states and 1049 transitions. [2023-11-29 06:03:31,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 421 transitions, 2904 flow [2023-11-29 06:03:31,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 421 transitions, 2734 flow, removed 85 selfloop flow, removed 0 redundant places. [2023-11-29 06:03:31,409 INFO L231 Difference]: Finished difference. Result has 232 places, 357 transitions, 2338 flow [2023-11-29 06:03:31,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2338, PETRI_PLACES=232, PETRI_TRANSITIONS=357} [2023-11-29 06:03:31,411 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 107 predicate places. [2023-11-29 06:03:31,411 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 357 transitions, 2338 flow [2023-11-29 06:03:31,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:31,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:31,412 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:31,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:03:31,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:03:31,613 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:31,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1457871628, now seen corresponding path program 2 times [2023-11-29 06:03:31,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:31,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567114287] [2023-11-29 06:03:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:31,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:03:32,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567114287] [2023-11-29 06:03:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567114287] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893932143] [2023-11-29 06:03:32,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:03:32,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:32,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:32,363 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:32,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:03:32,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:03:32,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:03:32,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:03:32,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:32,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:03:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:03:32,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:03:32,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893932143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:32,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:03:32,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:03:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867727803] [2023-11-29 06:03:32,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:32,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:03:32,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:32,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:03:32,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:03:33,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:03:33,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 357 transitions, 2338 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:33,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:33,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:03:33,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:35,041 INFO L124 PetriNetUnfolderBase]: 2246/8466 cut-off events. [2023-11-29 06:03:35,042 INFO L125 PetriNetUnfolderBase]: For 15678/16049 co-relation queries the response was YES. [2023-11-29 06:03:35,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25097 conditions, 8466 events. 2246/8466 cut-off events. For 15678/16049 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 79721 event pairs, 325 based on Foata normal form. 80/8409 useless extension candidates. Maximal degree in co-relation 24867. Up to 1451 conditions per place. [2023-11-29 06:03:35,117 INFO L140 encePairwiseOnDemand]: 114/128 looper letters, 122 selfloop transitions, 21 changer transitions 0/451 dead transitions. [2023-11-29 06:03:35,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 451 transitions, 3042 flow [2023-11-29 06:03:35,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:03:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:03:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1057 transitions. [2023-11-29 06:03:35,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.82578125 [2023-11-29 06:03:35,120 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1057 transitions. [2023-11-29 06:03:35,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1057 transitions. [2023-11-29 06:03:35,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:35,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1057 transitions. [2023-11-29 06:03:35,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.7) internal successors, (1057), 10 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:35,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:35,128 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:35,128 INFO L175 Difference]: Start difference. First operand has 232 places, 357 transitions, 2338 flow. Second operand 10 states and 1057 transitions. [2023-11-29 06:03:35,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 451 transitions, 3042 flow [2023-11-29 06:03:35,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 451 transitions, 3031 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:03:35,211 INFO L231 Difference]: Finished difference. Result has 244 places, 369 transitions, 2480 flow [2023-11-29 06:03:35,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2480, PETRI_PLACES=244, PETRI_TRANSITIONS=369} [2023-11-29 06:03:35,213 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 119 predicate places. [2023-11-29 06:03:35,213 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 369 transitions, 2480 flow [2023-11-29 06:03:35,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:35,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:35,214 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:35,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:03:35,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 06:03:35,417 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:35,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1198228148, now seen corresponding path program 3 times [2023-11-29 06:03:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:35,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489706750] [2023-11-29 06:03:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:35,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:03:36,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489706750] [2023-11-29 06:03:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489706750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191824989] [2023-11-29 06:03:36,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:03:36,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:36,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:36,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:36,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:03:36,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 06:03:36,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:03:36,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:03:36,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:36,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:03:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:03:36,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:03:36,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191824989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:36,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:03:36,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:03:36,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260878029] [2023-11-29 06:03:36,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:36,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:03:36,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:03:36,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:03:37,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:03:37,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 369 transitions, 2480 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:37,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:37,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:03:37,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:39,192 INFO L124 PetriNetUnfolderBase]: 2548/9715 cut-off events. [2023-11-29 06:03:39,192 INFO L125 PetriNetUnfolderBase]: For 20600/21095 co-relation queries the response was YES. [2023-11-29 06:03:39,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29618 conditions, 9715 events. 2548/9715 cut-off events. For 20600/21095 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 93206 event pairs, 345 based on Foata normal form. 100/9657 useless extension candidates. Maximal degree in co-relation 29382. Up to 1528 conditions per place. [2023-11-29 06:03:39,253 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 122 selfloop transitions, 23 changer transitions 0/453 dead transitions. [2023-11-29 06:03:39,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 453 transitions, 3311 flow [2023-11-29 06:03:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:03:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:03:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1055 transitions. [2023-11-29 06:03:39,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.82421875 [2023-11-29 06:03:39,256 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1055 transitions. [2023-11-29 06:03:39,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1055 transitions. [2023-11-29 06:03:39,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:39,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1055 transitions. [2023-11-29 06:03:39,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.5) internal successors, (1055), 10 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:39,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:39,261 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:39,262 INFO L175 Difference]: Start difference. First operand has 244 places, 369 transitions, 2480 flow. Second operand 10 states and 1055 transitions. [2023-11-29 06:03:39,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 453 transitions, 3311 flow [2023-11-29 06:03:39,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 453 transitions, 3245 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-29 06:03:39,330 INFO L231 Difference]: Finished difference. Result has 255 places, 381 transitions, 2646 flow [2023-11-29 06:03:39,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2646, PETRI_PLACES=255, PETRI_TRANSITIONS=381} [2023-11-29 06:03:39,331 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 130 predicate places. [2023-11-29 06:03:39,331 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 381 transitions, 2646 flow [2023-11-29 06:03:39,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:39,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:39,332 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:39,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:03:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 06:03:39,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:39,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash -742618040, now seen corresponding path program 4 times [2023-11-29 06:03:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:39,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763824549] [2023-11-29 06:03:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:39,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:03:40,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:40,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763824549] [2023-11-29 06:03:40,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763824549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:40,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050198714] [2023-11-29 06:03:40,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:03:40,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:40,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:40,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:40,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:03:40,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:03:40,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:03:40,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:03:40,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:40,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:03:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:03:40,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:03:40,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050198714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:40,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:03:40,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 13 [2023-11-29 06:03:40,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085183598] [2023-11-29 06:03:40,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:40,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:03:40,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:40,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:03:40,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:03:40,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:03:40,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 381 transitions, 2646 flow. Second operand has 9 states, 9 states have (on average 97.77777777777777) internal successors, (880), 9 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:40,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:40,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:03:40,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:43,550 INFO L124 PetriNetUnfolderBase]: 3093/11561 cut-off events. [2023-11-29 06:03:43,550 INFO L125 PetriNetUnfolderBase]: For 26985/27556 co-relation queries the response was YES. [2023-11-29 06:03:43,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36656 conditions, 11561 events. 3093/11561 cut-off events. For 26985/27556 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 113264 event pairs, 346 based on Foata normal form. 120/11533 useless extension candidates. Maximal degree in co-relation 36414. Up to 1973 conditions per place. [2023-11-29 06:03:43,632 INFO L140 encePairwiseOnDemand]: 114/128 looper letters, 121 selfloop transitions, 74 changer transitions 0/503 dead transitions. [2023-11-29 06:03:43,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 503 transitions, 3845 flow [2023-11-29 06:03:43,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:03:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:03:43,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1568 transitions. [2023-11-29 06:03:43,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2023-11-29 06:03:43,634 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1568 transitions. [2023-11-29 06:03:43,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1568 transitions. [2023-11-29 06:03:43,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:43,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1568 transitions. [2023-11-29 06:03:43,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 104.53333333333333) internal successors, (1568), 15 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:43,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:43,639 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:43,640 INFO L175 Difference]: Start difference. First operand has 255 places, 381 transitions, 2646 flow. Second operand 15 states and 1568 transitions. [2023-11-29 06:03:43,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 503 transitions, 3845 flow [2023-11-29 06:03:43,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 503 transitions, 3764 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-29 06:03:43,720 INFO L231 Difference]: Finished difference. Result has 274 places, 424 transitions, 3266 flow [2023-11-29 06:03:43,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3266, PETRI_PLACES=274, PETRI_TRANSITIONS=424} [2023-11-29 06:03:43,721 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 149 predicate places. [2023-11-29 06:03:43,721 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 424 transitions, 3266 flow [2023-11-29 06:03:43,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 97.77777777777777) internal successors, (880), 9 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:43,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:43,722 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:43,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:03:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 06:03:43,922 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:43,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1155070748, now seen corresponding path program 5 times [2023-11-29 06:03:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:43,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215474544] [2023-11-29 06:03:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:03:44,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:44,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215474544] [2023-11-29 06:03:44,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215474544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:44,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632002917] [2023-11-29 06:03:44,427 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:03:44,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:44,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:44,429 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:44,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:03:44,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 06:03:44,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:03:44,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:03:44,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:44,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:03:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:03:44,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:03:44,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632002917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:44,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:03:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:03:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269924336] [2023-11-29 06:03:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:03:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:03:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:03:45,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:03:45,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 424 transitions, 3266 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:45,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:45,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:03:45,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:48,615 INFO L124 PetriNetUnfolderBase]: 3669/13446 cut-off events. [2023-11-29 06:03:48,615 INFO L125 PetriNetUnfolderBase]: For 37743/38552 co-relation queries the response was YES. [2023-11-29 06:03:48,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44157 conditions, 13446 events. 3669/13446 cut-off events. For 37743/38552 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 135795 event pairs, 383 based on Foata normal form. 153/13417 useless extension candidates. Maximal degree in co-relation 43907. Up to 2231 conditions per place. [2023-11-29 06:03:48,716 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 180 selfloop transitions, 49 changer transitions 0/537 dead transitions. [2023-11-29 06:03:48,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 537 transitions, 4777 flow [2023-11-29 06:03:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:03:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:03:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1367 transitions. [2023-11-29 06:03:48,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8215144230769231 [2023-11-29 06:03:48,719 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1367 transitions. [2023-11-29 06:03:48,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1367 transitions. [2023-11-29 06:03:48,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:48,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1367 transitions. [2023-11-29 06:03:48,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.15384615384616) internal successors, (1367), 13 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:48,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:48,723 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:48,723 INFO L175 Difference]: Start difference. First operand has 274 places, 424 transitions, 3266 flow. Second operand 13 states and 1367 transitions. [2023-11-29 06:03:48,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 537 transitions, 4777 flow [2023-11-29 06:03:48,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 537 transitions, 4550 flow, removed 71 selfloop flow, removed 2 redundant places. [2023-11-29 06:03:48,845 INFO L231 Difference]: Finished difference. Result has 293 places, 458 transitions, 3757 flow [2023-11-29 06:03:48,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=3166, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3757, PETRI_PLACES=293, PETRI_TRANSITIONS=458} [2023-11-29 06:03:48,846 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 168 predicate places. [2023-11-29 06:03:48,847 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 458 transitions, 3757 flow [2023-11-29 06:03:48,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:48,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:48,847 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:48,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:03:49,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 06:03:49,048 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:49,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:49,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1598129668, now seen corresponding path program 6 times [2023-11-29 06:03:49,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:49,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488939520] [2023-11-29 06:03:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:49,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:03:49,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:49,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488939520] [2023-11-29 06:03:49,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488939520] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:49,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116036431] [2023-11-29 06:03:49,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:03:49,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:49,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:49,939 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:49,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:03:50,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 06:03:50,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:03:50,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:03:50,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:50,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:03:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:03:50,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:03:50,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116036431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:50,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:03:50,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:03:50,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779161364] [2023-11-29 06:03:50,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:03:50,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:03:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:03:50,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:03:50,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 458 transitions, 3757 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:50,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:50,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:03:50,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:54,224 INFO L124 PetriNetUnfolderBase]: 4010/14590 cut-off events. [2023-11-29 06:03:54,224 INFO L125 PetriNetUnfolderBase]: For 44615/45471 co-relation queries the response was YES. [2023-11-29 06:03:54,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49282 conditions, 14590 events. 4010/14590 cut-off events. For 44615/45471 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 149474 event pairs, 424 based on Foata normal form. 145/14549 useless extension candidates. Maximal degree in co-relation 49100. Up to 2530 conditions per place. [2023-11-29 06:03:54,355 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 188 selfloop transitions, 45 changer transitions 0/541 dead transitions. [2023-11-29 06:03:54,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 541 transitions, 4964 flow [2023-11-29 06:03:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:03:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:03:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1062 transitions. [2023-11-29 06:03:54,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8296875 [2023-11-29 06:03:54,357 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1062 transitions. [2023-11-29 06:03:54,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1062 transitions. [2023-11-29 06:03:54,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:54,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1062 transitions. [2023-11-29 06:03:54,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.2) internal successors, (1062), 10 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:54,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:54,362 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:54,362 INFO L175 Difference]: Start difference. First operand has 293 places, 458 transitions, 3757 flow. Second operand 10 states and 1062 transitions. [2023-11-29 06:03:54,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 541 transitions, 4964 flow [2023-11-29 06:03:54,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 541 transitions, 4864 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-11-29 06:03:54,662 INFO L231 Difference]: Finished difference. Result has 305 places, 476 transitions, 4086 flow [2023-11-29 06:03:54,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=3686, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4086, PETRI_PLACES=305, PETRI_TRANSITIONS=476} [2023-11-29 06:03:54,663 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 180 predicate places. [2023-11-29 06:03:54,663 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 476 transitions, 4086 flow [2023-11-29 06:03:54,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:54,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:54,663 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:54,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:03:54,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 06:03:54,864 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:03:54,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:54,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1379504676, now seen corresponding path program 7 times [2023-11-29 06:03:54,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:54,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286204302] [2023-11-29 06:03:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:54,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:03:55,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:55,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286204302] [2023-11-29 06:03:55,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286204302] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:55,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175403869] [2023-11-29 06:03:55,446 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:03:55,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:55,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:55,447 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:55,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:03:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:55,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:03:55,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:55,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:03:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:03:55,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:03:55,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175403869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:55,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:03:55,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:03:55,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916469201] [2023-11-29 06:03:55,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:55,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:03:55,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:55,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:03:55,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:03:56,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:03:56,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 476 transitions, 4086 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:56,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:56,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:03:56,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:04:00,220 INFO L124 PetriNetUnfolderBase]: 4588/16625 cut-off events. [2023-11-29 06:04:00,220 INFO L125 PetriNetUnfolderBase]: For 57211/58281 co-relation queries the response was YES. [2023-11-29 06:04:00,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57349 conditions, 16625 events. 4588/16625 cut-off events. For 57211/58281 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 175119 event pairs, 491 based on Foata normal form. 173/16594 useless extension candidates. Maximal degree in co-relation 57186. Up to 2790 conditions per place. [2023-11-29 06:04:00,362 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 215 selfloop transitions, 56 changer transitions 0/579 dead transitions. [2023-11-29 06:04:00,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 579 transitions, 5797 flow [2023-11-29 06:04:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:04:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:04:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1369 transitions. [2023-11-29 06:04:00,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8227163461538461 [2023-11-29 06:04:00,365 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1369 transitions. [2023-11-29 06:04:00,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1369 transitions. [2023-11-29 06:04:00,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:04:00,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1369 transitions. [2023-11-29 06:04:00,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.3076923076923) internal successors, (1369), 13 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:00,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:00,368 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:00,368 INFO L175 Difference]: Start difference. First operand has 305 places, 476 transitions, 4086 flow. Second operand 13 states and 1369 transitions. [2023-11-29 06:04:00,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 579 transitions, 5797 flow [2023-11-29 06:04:00,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 579 transitions, 5664 flow, removed 33 selfloop flow, removed 3 redundant places. [2023-11-29 06:04:00,595 INFO L231 Difference]: Finished difference. Result has 324 places, 514 transitions, 4769 flow [2023-11-29 06:04:00,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4769, PETRI_PLACES=324, PETRI_TRANSITIONS=514} [2023-11-29 06:04:00,595 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 199 predicate places. [2023-11-29 06:04:00,596 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 514 transitions, 4769 flow [2023-11-29 06:04:00,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:00,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:00,596 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:00,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:04:00,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:04:00,797 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:04:00,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:00,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1776637698, now seen corresponding path program 8 times [2023-11-29 06:04:00,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:00,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112853812] [2023-11-29 06:04:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:00,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:04:01,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112853812] [2023-11-29 06:04:01,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112853812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:01,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853766383] [2023-11-29 06:04:01,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:04:01,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:01,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:01,509 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:01,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:04:01,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:04:01,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:04:01,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:04:01,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:01,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:04:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:04:01,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:01,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853766383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:01,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:01,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:04:01,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610277063] [2023-11-29 06:04:01,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:01,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:04:01,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:04:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:04:02,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:04:02,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 514 transitions, 4769 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:02,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:04:02,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:04:02,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:04:07,184 INFO L124 PetriNetUnfolderBase]: 5440/19352 cut-off events. [2023-11-29 06:04:07,184 INFO L125 PetriNetUnfolderBase]: For 75761/77047 co-relation queries the response was YES. [2023-11-29 06:04:07,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68897 conditions, 19352 events. 5440/19352 cut-off events. For 75761/77047 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 210087 event pairs, 521 based on Foata normal form. 213/19341 useless extension candidates. Maximal degree in co-relation 68719. Up to 3405 conditions per place. [2023-11-29 06:04:07,378 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 250 selfloop transitions, 65 changer transitions 0/623 dead transitions. [2023-11-29 06:04:07,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 623 transitions, 6759 flow [2023-11-29 06:04:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:04:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:04:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1369 transitions. [2023-11-29 06:04:07,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8227163461538461 [2023-11-29 06:04:07,380 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1369 transitions. [2023-11-29 06:04:07,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1369 transitions. [2023-11-29 06:04:07,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:04:07,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1369 transitions. [2023-11-29 06:04:07,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.3076923076923) internal successors, (1369), 13 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:07,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:07,384 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:07,384 INFO L175 Difference]: Start difference. First operand has 324 places, 514 transitions, 4769 flow. Second operand 13 states and 1369 transitions. [2023-11-29 06:04:07,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 623 transitions, 6759 flow [2023-11-29 06:04:07,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 623 transitions, 6602 flow, removed 78 selfloop flow, removed 1 redundant places. [2023-11-29 06:04:07,708 INFO L231 Difference]: Finished difference. Result has 345 places, 549 transitions, 5465 flow [2023-11-29 06:04:07,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=4612, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5465, PETRI_PLACES=345, PETRI_TRANSITIONS=549} [2023-11-29 06:04:07,709 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 220 predicate places. [2023-11-29 06:04:07,709 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 549 transitions, 5465 flow [2023-11-29 06:04:07,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:07,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:07,710 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:07,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 06:04:07,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 06:04:07,910 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:04:07,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:07,911 INFO L85 PathProgramCache]: Analyzing trace with hash -360987932, now seen corresponding path program 9 times [2023-11-29 06:04:07,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:07,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189446811] [2023-11-29 06:04:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:04:08,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:08,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189446811] [2023-11-29 06:04:08,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189446811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483757338] [2023-11-29 06:04:08,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:04:08,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:08,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:08,443 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:08,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:04:08,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 06:04:08,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:04:08,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:04:08,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:08,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:04:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:04:08,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:08,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483757338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:08,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:08,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:04:08,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598156861] [2023-11-29 06:04:08,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:08,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:04:08,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:08,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:04:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:04:09,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:04:09,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 549 transitions, 5465 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:09,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:04:09,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:04:09,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:04:14,127 INFO L124 PetriNetUnfolderBase]: 5165/18491 cut-off events. [2023-11-29 06:04:14,128 INFO L125 PetriNetUnfolderBase]: For 81722/83094 co-relation queries the response was YES. [2023-11-29 06:04:14,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66762 conditions, 18491 events. 5165/18491 cut-off events. For 81722/83094 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 198995 event pairs, 472 based on Foata normal form. 385/18673 useless extension candidates. Maximal degree in co-relation 66581. Up to 3141 conditions per place. [2023-11-29 06:04:14,309 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 204 selfloop transitions, 133 changer transitions 0/645 dead transitions. [2023-11-29 06:04:14,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 645 transitions, 7130 flow [2023-11-29 06:04:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:04:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:04:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1356 transitions. [2023-11-29 06:04:14,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8149038461538461 [2023-11-29 06:04:14,311 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1356 transitions. [2023-11-29 06:04:14,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1356 transitions. [2023-11-29 06:04:14,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:04:14,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1356 transitions. [2023-11-29 06:04:14,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.3076923076923) internal successors, (1356), 13 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:14,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:14,316 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:14,316 INFO L175 Difference]: Start difference. First operand has 345 places, 549 transitions, 5465 flow. Second operand 13 states and 1356 transitions. [2023-11-29 06:04:14,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 645 transitions, 7130 flow [2023-11-29 06:04:14,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 645 transitions, 6947 flow, removed 91 selfloop flow, removed 1 redundant places. [2023-11-29 06:04:14,656 INFO L231 Difference]: Finished difference. Result has 361 places, 559 transitions, 5776 flow [2023-11-29 06:04:14,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=5246, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5776, PETRI_PLACES=361, PETRI_TRANSITIONS=559} [2023-11-29 06:04:14,656 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 236 predicate places. [2023-11-29 06:04:14,657 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 559 transitions, 5776 flow [2023-11-29 06:04:14,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:14,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:14,657 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:14,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:04:14,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 06:04:14,857 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:04:14,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:14,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1241935860, now seen corresponding path program 10 times [2023-11-29 06:04:14,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:14,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705389770] [2023-11-29 06:04:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:04:15,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:15,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705389770] [2023-11-29 06:04:15,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705389770] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:15,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820950310] [2023-11-29 06:04:15,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:04:15,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:15,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:15,268 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:15,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:04:15,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:04:15,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:04:15,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 06:04:15,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:16,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:04:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 06:04:16,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:04:16,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-11-29 06:04:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:04:16,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820950310] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:16,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:04:16,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 18] total 29 [2023-11-29 06:04:16,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780102890] [2023-11-29 06:04:16,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:16,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:04:16,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:16,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:04:16,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2023-11-29 06:04:16,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 128 [2023-11-29 06:04:16,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 559 transitions, 5776 flow. Second operand has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:16,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:04:16,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 128 [2023-11-29 06:04:16,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:04:21,347 INFO L124 PetriNetUnfolderBase]: 5127/18456 cut-off events. [2023-11-29 06:04:21,347 INFO L125 PetriNetUnfolderBase]: For 87275/88553 co-relation queries the response was YES. [2023-11-29 06:04:21,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67491 conditions, 18456 events. 5127/18456 cut-off events. For 87275/88553 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 198754 event pairs, 464 based on Foata normal form. 354/18609 useless extension candidates. Maximal degree in co-relation 67306. Up to 3150 conditions per place. [2023-11-29 06:04:21,557 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 193 selfloop transitions, 151 changer transitions 0/653 dead transitions. [2023-11-29 06:04:21,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 653 transitions, 7498 flow [2023-11-29 06:04:21,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:04:21,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 06:04:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1481 transitions. [2023-11-29 06:04:21,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8264508928571429 [2023-11-29 06:04:21,559 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1481 transitions. [2023-11-29 06:04:21,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1481 transitions. [2023-11-29 06:04:21,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:04:21,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1481 transitions. [2023-11-29 06:04:21,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 105.78571428571429) internal successors, (1481), 14 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:21,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:21,562 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:21,562 INFO L175 Difference]: Start difference. First operand has 361 places, 559 transitions, 5776 flow. Second operand 14 states and 1481 transitions. [2023-11-29 06:04:21,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 653 transitions, 7498 flow [2023-11-29 06:04:21,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 653 transitions, 7177 flow, removed 68 selfloop flow, removed 8 redundant places. [2023-11-29 06:04:21,931 INFO L231 Difference]: Finished difference. Result has 373 places, 575 transitions, 6231 flow [2023-11-29 06:04:21,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6231, PETRI_PLACES=373, PETRI_TRANSITIONS=575} [2023-11-29 06:04:21,932 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 248 predicate places. [2023-11-29 06:04:21,932 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 575 transitions, 6231 flow [2023-11-29 06:04:21,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:21,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:21,932 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:21,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 06:04:22,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:22,133 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:04:22,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:22,133 INFO L85 PathProgramCache]: Analyzing trace with hash 456710164, now seen corresponding path program 11 times [2023-11-29 06:04:22,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:22,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932831251] [2023-11-29 06:04:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:22,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:04:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:22,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932831251] [2023-11-29 06:04:22,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932831251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:22,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748843575] [2023-11-29 06:04:22,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:04:22,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:22,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:22,737 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:22,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 06:04:22,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 06:04:22,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:04:22,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:04:22,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:23,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:04:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:04:23,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:23,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748843575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:23,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:23,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:04:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734536946] [2023-11-29 06:04:23,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:23,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:04:23,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:23,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:04:23,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:04:23,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:04:23,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 575 transitions, 6231 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:23,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:04:23,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:04:23,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:04:28,785 INFO L124 PetriNetUnfolderBase]: 5397/19274 cut-off events. [2023-11-29 06:04:28,785 INFO L125 PetriNetUnfolderBase]: For 94431/95748 co-relation queries the response was YES. [2023-11-29 06:04:28,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71170 conditions, 19274 events. 5397/19274 cut-off events. For 94431/95748 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 209184 event pairs, 515 based on Foata normal form. 256/19304 useless extension candidates. Maximal degree in co-relation 70980. Up to 3319 conditions per place. [2023-11-29 06:04:29,025 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 273 selfloop transitions, 73 changer transitions 0/654 dead transitions. [2023-11-29 06:04:29,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 654 transitions, 7898 flow [2023-11-29 06:04:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:04:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:04:29,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1362 transitions. [2023-11-29 06:04:29,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8185096153846154 [2023-11-29 06:04:29,028 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1362 transitions. [2023-11-29 06:04:29,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1362 transitions. [2023-11-29 06:04:29,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:04:29,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1362 transitions. [2023-11-29 06:04:29,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.76923076923077) internal successors, (1362), 13 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:29,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:29,032 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:29,032 INFO L175 Difference]: Start difference. First operand has 373 places, 575 transitions, 6231 flow. Second operand 13 states and 1362 transitions. [2023-11-29 06:04:29,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 654 transitions, 7898 flow [2023-11-29 06:04:29,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 654 transitions, 7639 flow, removed 116 selfloop flow, removed 1 redundant places. [2023-11-29 06:04:29,588 INFO L231 Difference]: Finished difference. Result has 390 places, 591 transitions, 6553 flow [2023-11-29 06:04:29,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=6076, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6553, PETRI_PLACES=390, PETRI_TRANSITIONS=591} [2023-11-29 06:04:29,589 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 265 predicate places. [2023-11-29 06:04:29,589 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 591 transitions, 6553 flow [2023-11-29 06:04:29,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:29,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:29,590 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:29,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 06:04:29,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:29,790 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:04:29,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash -891759832, now seen corresponding path program 12 times [2023-11-29 06:04:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:29,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798929669] [2023-11-29 06:04:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:29,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:04:30,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:30,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798929669] [2023-11-29 06:04:30,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798929669] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:30,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955796306] [2023-11-29 06:04:30,159 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:04:30,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:30,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:30,160 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:30,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 06:04:30,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 06:04:30,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:04:30,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:04:30,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:30,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:04:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:04:30,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:30,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955796306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:30,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:30,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:04:30,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175370963] [2023-11-29 06:04:30,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:30,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:04:30,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:04:30,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:04:31,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:04:31,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 591 transitions, 6553 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:31,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:04:31,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:04:31,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:04:35,883 INFO L124 PetriNetUnfolderBase]: 5352/19081 cut-off events. [2023-11-29 06:04:35,883 INFO L125 PetriNetUnfolderBase]: For 92072/93474 co-relation queries the response was YES. [2023-11-29 06:04:36,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70182 conditions, 19081 events. 5352/19081 cut-off events. For 92072/93474 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 206399 event pairs, 520 based on Foata normal form. 293/19146 useless extension candidates. Maximal degree in co-relation 69984. Up to 3310 conditions per place. [2023-11-29 06:04:36,142 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 264 selfloop transitions, 82 changer transitions 0/654 dead transitions. [2023-11-29 06:04:36,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 654 transitions, 7923 flow [2023-11-29 06:04:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:04:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:04:36,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1355 transitions. [2023-11-29 06:04:36,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8143028846153846 [2023-11-29 06:04:36,144 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1355 transitions. [2023-11-29 06:04:36,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1355 transitions. [2023-11-29 06:04:36,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:04:36,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1355 transitions. [2023-11-29 06:04:36,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.23076923076923) internal successors, (1355), 13 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:36,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:36,147 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:36,147 INFO L175 Difference]: Start difference. First operand has 390 places, 591 transitions, 6553 flow. Second operand 13 states and 1355 transitions. [2023-11-29 06:04:36,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 654 transitions, 7923 flow [2023-11-29 06:04:36,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 654 transitions, 7780 flow, removed 34 selfloop flow, removed 5 redundant places. [2023-11-29 06:04:36,573 INFO L231 Difference]: Finished difference. Result has 403 places, 599 transitions, 6787 flow [2023-11-29 06:04:36,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=6342, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6787, PETRI_PLACES=403, PETRI_TRANSITIONS=599} [2023-11-29 06:04:36,574 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 278 predicate places. [2023-11-29 06:04:36,574 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 599 transitions, 6787 flow [2023-11-29 06:04:36,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:36,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:36,574 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:36,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 06:04:36,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:36,775 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:04:36,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:36,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1956473390, now seen corresponding path program 13 times [2023-11-29 06:04:36,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:36,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837780309] [2023-11-29 06:04:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:36,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:04:37,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:37,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837780309] [2023-11-29 06:04:37,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837780309] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:37,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182899975] [2023-11-29 06:04:37,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:04:37,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:37,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:37,274 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:37,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 06:04:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:04:37,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:37,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:04:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:04:37,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:37,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182899975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:37,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:37,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:04:37,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546564342] [2023-11-29 06:04:37,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:37,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:04:37,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:37,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:04:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:04:38,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:04:38,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 599 transitions, 6787 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:38,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:04:38,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:04:38,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:04:43,052 INFO L124 PetriNetUnfolderBase]: 5363/19223 cut-off events. [2023-11-29 06:04:43,052 INFO L125 PetriNetUnfolderBase]: For 89897/91276 co-relation queries the response was YES. [2023-11-29 06:04:43,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70452 conditions, 19223 events. 5363/19223 cut-off events. For 89897/91276 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 207989 event pairs, 552 based on Foata normal form. 283/19281 useless extension candidates. Maximal degree in co-relation 70250. Up to 3334 conditions per place. [2023-11-29 06:04:43,297 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 250 selfloop transitions, 100 changer transitions 0/658 dead transitions. [2023-11-29 06:04:43,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 658 transitions, 8238 flow [2023-11-29 06:04:43,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:04:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:04:43,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1054 transitions. [2023-11-29 06:04:43,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8234375 [2023-11-29 06:04:43,299 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1054 transitions. [2023-11-29 06:04:43,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1054 transitions. [2023-11-29 06:04:43,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:04:43,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1054 transitions. [2023-11-29 06:04:43,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.4) internal successors, (1054), 10 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:43,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:43,303 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:43,303 INFO L175 Difference]: Start difference. First operand has 403 places, 599 transitions, 6787 flow. Second operand 10 states and 1054 transitions. [2023-11-29 06:04:43,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 658 transitions, 8238 flow [2023-11-29 06:04:43,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 658 transitions, 8133 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-29 06:04:43,743 INFO L231 Difference]: Finished difference. Result has 414 places, 616 transitions, 7414 flow [2023-11-29 06:04:43,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=6700, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7414, PETRI_PLACES=414, PETRI_TRANSITIONS=616} [2023-11-29 06:04:43,745 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 289 predicate places. [2023-11-29 06:04:43,745 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 616 transitions, 7414 flow [2023-11-29 06:04:43,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:43,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:43,745 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:43,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 06:04:43,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:43,946 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:04:43,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:43,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1588006044, now seen corresponding path program 14 times [2023-11-29 06:04:43,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:43,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966343806] [2023-11-29 06:04:43,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:43,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:04:44,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:44,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966343806] [2023-11-29 06:04:44,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966343806] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:44,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598075331] [2023-11-29 06:04:44,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:04:44,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:44,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:44,642 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:44,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 06:04:44,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:04:44,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:04:44,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:04:44,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:44,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:04:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:04:44,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:44,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598075331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:44,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:44,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:04:44,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941260186] [2023-11-29 06:04:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:44,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:04:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:44,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:04:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:04:45,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:04:45,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 616 transitions, 7414 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:45,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:04:45,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:04:45,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:04:51,637 INFO L124 PetriNetUnfolderBase]: 6332/22222 cut-off events. [2023-11-29 06:04:51,637 INFO L125 PetriNetUnfolderBase]: For 113062/114722 co-relation queries the response was YES. [2023-11-29 06:04:51,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82250 conditions, 22222 events. 6332/22222 cut-off events. For 113062/114722 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 247144 event pairs, 602 based on Foata normal form. 272/22231 useless extension candidates. Maximal degree in co-relation 82036. Up to 3907 conditions per place. [2023-11-29 06:04:51,961 INFO L140 encePairwiseOnDemand]: 110/128 looper letters, 330 selfloop transitions, 66 changer transitions 0/704 dead transitions. [2023-11-29 06:04:51,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 704 transitions, 9549 flow [2023-11-29 06:04:51,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:04:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:04:51,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1372 transitions. [2023-11-29 06:04:51,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8245192307692307 [2023-11-29 06:04:51,964 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1372 transitions. [2023-11-29 06:04:51,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1372 transitions. [2023-11-29 06:04:51,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:04:51,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1372 transitions. [2023-11-29 06:04:51,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.53846153846153) internal successors, (1372), 13 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:51,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:51,969 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:51,969 INFO L175 Difference]: Start difference. First operand has 414 places, 616 transitions, 7414 flow. Second operand 13 states and 1372 transitions. [2023-11-29 06:04:51,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 704 transitions, 9549 flow [2023-11-29 06:04:52,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 704 transitions, 9264 flow, removed 142 selfloop flow, removed 1 redundant places. [2023-11-29 06:04:52,563 INFO L231 Difference]: Finished difference. Result has 433 places, 643 transitions, 8002 flow [2023-11-29 06:04:52,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=7283, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8002, PETRI_PLACES=433, PETRI_TRANSITIONS=643} [2023-11-29 06:04:52,564 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 308 predicate places. [2023-11-29 06:04:52,564 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 643 transitions, 8002 flow [2023-11-29 06:04:52,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:52,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:52,564 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:52,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 06:04:52,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:52,765 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:04:52,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:52,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2099739660, now seen corresponding path program 15 times [2023-11-29 06:04:52,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:52,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17786754] [2023-11-29 06:04:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:52,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:04:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:53,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17786754] [2023-11-29 06:04:53,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17786754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:53,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356307881] [2023-11-29 06:04:53,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:04:53,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:53,215 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:53,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 06:04:53,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 06:04:53,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:04:53,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:04:53,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:53,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:04:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:04:53,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:53,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356307881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:53,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:53,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:04:53,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384698621] [2023-11-29 06:04:53,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:53,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:04:53,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:53,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:04:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:04:54,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:04:54,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 643 transitions, 8002 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:54,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:04:54,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:04:54,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:05:00,617 INFO L124 PetriNetUnfolderBase]: 6861/23878 cut-off events. [2023-11-29 06:05:00,617 INFO L125 PetriNetUnfolderBase]: For 120855/122753 co-relation queries the response was YES. [2023-11-29 06:05:00,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88723 conditions, 23878 events. 6861/23878 cut-off events. For 120855/122753 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 269372 event pairs, 639 based on Foata normal form. 378/23984 useless extension candidates. Maximal degree in co-relation 88501. Up to 4249 conditions per place. [2023-11-29 06:05:01,112 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 295 selfloop transitions, 110 changer transitions 0/713 dead transitions. [2023-11-29 06:05:01,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 713 transitions, 9738 flow [2023-11-29 06:05:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:05:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:05:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1357 transitions. [2023-11-29 06:05:01,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8155048076923077 [2023-11-29 06:05:01,114 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1357 transitions. [2023-11-29 06:05:01,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1357 transitions. [2023-11-29 06:05:01,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:05:01,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1357 transitions. [2023-11-29 06:05:01,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:01,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:01,117 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:01,117 INFO L175 Difference]: Start difference. First operand has 433 places, 643 transitions, 8002 flow. Second operand 13 states and 1357 transitions. [2023-11-29 06:05:01,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 713 transitions, 9738 flow [2023-11-29 06:05:01,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 713 transitions, 9546 flow, removed 57 selfloop flow, removed 4 redundant places. [2023-11-29 06:05:01,766 INFO L231 Difference]: Finished difference. Result has 448 places, 663 transitions, 8545 flow [2023-11-29 06:05:01,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=7819, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8545, PETRI_PLACES=448, PETRI_TRANSITIONS=663} [2023-11-29 06:05:01,767 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 323 predicate places. [2023-11-29 06:05:01,767 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 663 transitions, 8545 flow [2023-11-29 06:05:01,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:01,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:05:01,768 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:01,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 06:05:01,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:01,968 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:05:01,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:01,969 INFO L85 PathProgramCache]: Analyzing trace with hash 226822046, now seen corresponding path program 16 times [2023-11-29 06:05:01,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282822641] [2023-11-29 06:05:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:01,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:05:02,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:02,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282822641] [2023-11-29 06:05:02,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282822641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:05:02,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119200431] [2023-11-29 06:05:02,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:05:02,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:02,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:02,356 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:02,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 06:05:02,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:05:02,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:05:02,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 06:05:02,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:02,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:05:02,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:05:02,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,645 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 21 treesize of output 20 [2023-11-29 06:05:02,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,679 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 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 06:05:02,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,720 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 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 06:05:02,807 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:05:02,812 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 06:05:02,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 11 [2023-11-29 06:05:02,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-11-29 06:05:02,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-29 06:05:02,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:02,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2023-11-29 06:05:03,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:03,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:05:03,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2023-11-29 06:05:03,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:05:03,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 84 treesize of output 86 [2023-11-29 06:05:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:05:03,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:03,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119200431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:03,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:05:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [10] total 25 [2023-11-29 06:05:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642133572] [2023-11-29 06:05:03,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:03,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:05:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:05:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2023-11-29 06:05:04,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2023-11-29 06:05:04,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 663 transitions, 8545 flow. Second operand has 19 states, 19 states have (on average 71.42105263157895) internal successors, (1357), 19 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:04,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:05:04,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2023-11-29 06:05:04,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:05:19,503 INFO L124 PetriNetUnfolderBase]: 12596/34875 cut-off events. [2023-11-29 06:05:19,503 INFO L125 PetriNetUnfolderBase]: For 256201/257115 co-relation queries the response was YES. [2023-11-29 06:05:20,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157021 conditions, 34875 events. 12596/34875 cut-off events. For 256201/257115 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 368559 event pairs, 3485 based on Foata normal form. 117/34610 useless extension candidates. Maximal degree in co-relation 156688. Up to 12020 conditions per place. [2023-11-29 06:05:20,120 INFO L140 encePairwiseOnDemand]: 97/128 looper letters, 1140 selfloop transitions, 156 changer transitions 0/1413 dead transitions. [2023-11-29 06:05:20,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1413 transitions, 18248 flow [2023-11-29 06:05:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:05:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 06:05:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1678 transitions. [2023-11-29 06:05:20,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6899671052631579 [2023-11-29 06:05:20,122 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1678 transitions. [2023-11-29 06:05:20,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1678 transitions. [2023-11-29 06:05:20,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:05:20,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1678 transitions. [2023-11-29 06:05:20,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.3157894736842) internal successors, (1678), 19 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:20,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 128.0) internal successors, (2560), 20 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:20,127 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 128.0) internal successors, (2560), 20 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:20,127 INFO L175 Difference]: Start difference. First operand has 448 places, 663 transitions, 8545 flow. Second operand 19 states and 1678 transitions. [2023-11-29 06:05:20,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1413 transitions, 18248 flow [2023-11-29 06:05:21,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1413 transitions, 18010 flow, removed 40 selfloop flow, removed 5 redundant places. [2023-11-29 06:05:21,468 INFO L231 Difference]: Finished difference. Result has 475 places, 757 transitions, 10373 flow [2023-11-29 06:05:21,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=8328, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10373, PETRI_PLACES=475, PETRI_TRANSITIONS=757} [2023-11-29 06:05:21,469 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 350 predicate places. [2023-11-29 06:05:21,469 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 757 transitions, 10373 flow [2023-11-29 06:05:21,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 71.42105263157895) internal successors, (1357), 19 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:21,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:05:21,470 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:21,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 06:05:21,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 06:05:21,670 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:05:21,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash 477575910, now seen corresponding path program 17 times [2023-11-29 06:05:21,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:21,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977780471] [2023-11-29 06:05:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:21,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:05:22,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:22,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977780471] [2023-11-29 06:05:22,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977780471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:05:22,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8705584] [2023-11-29 06:05:22,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:05:22,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:22,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:22,129 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:22,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 06:05:22,308 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 06:05:22,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:05:22,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:05:22,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:22,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:05:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:05:22,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:22,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8705584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:22,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:05:22,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:05:22,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906935529] [2023-11-29 06:05:22,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:22,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:05:22,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:22,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:05:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:05:23,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:05:23,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 757 transitions, 10373 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:23,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:05:23,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:05:23,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:05:30,384 INFO L124 PetriNetUnfolderBase]: 7183/24889 cut-off events. [2023-11-29 06:05:30,384 INFO L125 PetriNetUnfolderBase]: For 150709/153024 co-relation queries the response was YES. [2023-11-29 06:05:30,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97940 conditions, 24889 events. 7183/24889 cut-off events. For 150709/153024 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 282611 event pairs, 668 based on Foata normal form. 416/25005 useless extension candidates. Maximal degree in co-relation 97695. Up to 4456 conditions per place. [2023-11-29 06:05:30,789 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 353 selfloop transitions, 101 changer transitions 0/826 dead transitions. [2023-11-29 06:05:30,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 826 transitions, 12312 flow [2023-11-29 06:05:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:05:30,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:05:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1364 transitions. [2023-11-29 06:05:30,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8197115384615384 [2023-11-29 06:05:30,791 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1364 transitions. [2023-11-29 06:05:30,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1364 transitions. [2023-11-29 06:05:30,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:05:30,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1364 transitions. [2023-11-29 06:05:30,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 13 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:30,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:30,795 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:30,795 INFO L175 Difference]: Start difference. First operand has 475 places, 757 transitions, 10373 flow. Second operand 13 states and 1364 transitions. [2023-11-29 06:05:30,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 826 transitions, 12312 flow [2023-11-29 06:05:31,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 826 transitions, 12168 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-11-29 06:05:31,783 INFO L231 Difference]: Finished difference. Result has 492 places, 780 transitions, 11082 flow [2023-11-29 06:05:31,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10232, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11082, PETRI_PLACES=492, PETRI_TRANSITIONS=780} [2023-11-29 06:05:31,784 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 367 predicate places. [2023-11-29 06:05:31,784 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 780 transitions, 11082 flow [2023-11-29 06:05:31,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:31,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:05:31,785 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:31,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 06:05:31,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:31,985 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:05:31,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2094730268, now seen corresponding path program 18 times [2023-11-29 06:05:31,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:31,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677967575] [2023-11-29 06:05:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:31,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:05:32,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677967575] [2023-11-29 06:05:32,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677967575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:05:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795331306] [2023-11-29 06:05:32,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:05:32,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:32,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:32,618 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:32,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 06:05:32,758 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 06:05:32,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:05:32,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:05:32,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:32,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:05:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:05:32,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:32,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795331306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:32,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:05:32,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:05:32,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683519951] [2023-11-29 06:05:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:32,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:05:32,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:32,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:05:32,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:05:33,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:05:33,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 780 transitions, 11082 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:33,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:05:33,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:05:33,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:05:41,402 INFO L124 PetriNetUnfolderBase]: 7445/25646 cut-off events. [2023-11-29 06:05:41,402 INFO L125 PetriNetUnfolderBase]: For 159005/161602 co-relation queries the response was YES. [2023-11-29 06:05:41,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101256 conditions, 25646 events. 7445/25646 cut-off events. For 159005/161602 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 293023 event pairs, 683 based on Foata normal form. 417/25744 useless extension candidates. Maximal degree in co-relation 101002. Up to 4610 conditions per place. [2023-11-29 06:05:41,880 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 370 selfloop transitions, 97 changer transitions 0/839 dead transitions. [2023-11-29 06:05:41,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 839 transitions, 12760 flow [2023-11-29 06:05:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:05:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:05:41,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1367 transitions. [2023-11-29 06:05:41,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8215144230769231 [2023-11-29 06:05:41,882 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1367 transitions. [2023-11-29 06:05:41,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1367 transitions. [2023-11-29 06:05:41,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:05:41,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1367 transitions. [2023-11-29 06:05:41,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.15384615384616) internal successors, (1367), 13 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:41,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:41,885 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:41,885 INFO L175 Difference]: Start difference. First operand has 492 places, 780 transitions, 11082 flow. Second operand 13 states and 1367 transitions. [2023-11-29 06:05:41,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 839 transitions, 12760 flow [2023-11-29 06:05:43,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 839 transitions, 12530 flow, removed 77 selfloop flow, removed 4 redundant places. [2023-11-29 06:05:43,094 INFO L231 Difference]: Finished difference. Result has 506 places, 793 transitions, 11414 flow [2023-11-29 06:05:43,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10861, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11414, PETRI_PLACES=506, PETRI_TRANSITIONS=793} [2023-11-29 06:05:43,095 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 381 predicate places. [2023-11-29 06:05:43,096 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 793 transitions, 11414 flow [2023-11-29 06:05:43,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:43,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:05:43,096 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:43,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 06:05:43,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 06:05:43,296 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:05:43,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:43,297 INFO L85 PathProgramCache]: Analyzing trace with hash 653655230, now seen corresponding path program 19 times [2023-11-29 06:05:43,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:43,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396136852] [2023-11-29 06:05:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:05:43,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:43,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396136852] [2023-11-29 06:05:43,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396136852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:05:43,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689457635] [2023-11-29 06:05:43,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:05:43,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:43,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:43,660 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:43,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 06:05:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:43,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:05:43,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:44,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:05:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:05:44,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:44,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689457635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:44,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:05:44,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:05:44,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526071759] [2023-11-29 06:05:44,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:44,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:05:44,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:44,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:05:44,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:05:44,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:05:44,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 793 transitions, 11414 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:44,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:05:44,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:05:44,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:05:52,311 INFO L124 PetriNetUnfolderBase]: 7140/24759 cut-off events. [2023-11-29 06:05:52,311 INFO L125 PetriNetUnfolderBase]: For 152647/155104 co-relation queries the response was YES. [2023-11-29 06:05:52,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97598 conditions, 24759 events. 7140/24759 cut-off events. For 152647/155104 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 281106 event pairs, 668 based on Foata normal form. 382/24832 useless extension candidates. Maximal degree in co-relation 97343. Up to 4441 conditions per place. [2023-11-29 06:05:52,777 INFO L140 encePairwiseOnDemand]: 112/128 looper letters, 365 selfloop transitions, 90 changer transitions 0/827 dead transitions. [2023-11-29 06:05:52,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 827 transitions, 12566 flow [2023-11-29 06:05:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:05:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:05:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1067 transitions. [2023-11-29 06:05:52,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.83359375 [2023-11-29 06:05:52,779 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1067 transitions. [2023-11-29 06:05:52,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1067 transitions. [2023-11-29 06:05:52,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:05:52,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1067 transitions. [2023-11-29 06:05:52,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.7) internal successors, (1067), 10 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:52,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:52,781 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:52,781 INFO L175 Difference]: Start difference. First operand has 506 places, 793 transitions, 11414 flow. Second operand 10 states and 1067 transitions. [2023-11-29 06:05:52,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 827 transitions, 12566 flow [2023-11-29 06:05:53,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 827 transitions, 12370 flow, removed 33 selfloop flow, removed 6 redundant places. [2023-11-29 06:05:53,822 INFO L231 Difference]: Finished difference. Result has 510 places, 787 transitions, 11204 flow [2023-11-29 06:05:53,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=11020, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11204, PETRI_PLACES=510, PETRI_TRANSITIONS=787} [2023-11-29 06:05:53,823 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 385 predicate places. [2023-11-29 06:05:53,823 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 787 transitions, 11204 flow [2023-11-29 06:05:53,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:53,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:05:53,823 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:53,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 06:05:54,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:54,024 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:05:54,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash 769290454, now seen corresponding path program 20 times [2023-11-29 06:05:54,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:54,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376352324] [2023-11-29 06:05:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:54,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:05:54,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:54,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376352324] [2023-11-29 06:05:54,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376352324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:05:54,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888558767] [2023-11-29 06:05:54,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:05:54,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:54,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:54,615 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:54,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 06:05:54,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:05:54,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:05:54,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:05:54,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:54,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:05:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:05:54,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:54,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888558767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:54,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:05:54,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:05:54,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288198917] [2023-11-29 06:05:54,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:54,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:05:54,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:54,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:05:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:05:55,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:05:55,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 787 transitions, 11204 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:55,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:05:55,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:05:55,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:06:02,855 INFO L124 PetriNetUnfolderBase]: 6829/23791 cut-off events. [2023-11-29 06:06:02,855 INFO L125 PetriNetUnfolderBase]: For 142562/144929 co-relation queries the response was YES. [2023-11-29 06:06:03,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93053 conditions, 23791 events. 6829/23791 cut-off events. For 142562/144929 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 268383 event pairs, 659 based on Foata normal form. 357/23853 useless extension candidates. Maximal degree in co-relation 92797. Up to 4258 conditions per place. [2023-11-29 06:06:03,259 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 354 selfloop transitions, 88 changer transitions 0/756 dead transitions. [2023-11-29 06:06:03,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 756 transitions, 11362 flow [2023-11-29 06:06:03,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:06:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:06:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1062 transitions. [2023-11-29 06:06:03,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8296875 [2023-11-29 06:06:03,261 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1062 transitions. [2023-11-29 06:06:03,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1062 transitions. [2023-11-29 06:06:03,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:06:03,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1062 transitions. [2023-11-29 06:06:03,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.2) internal successors, (1062), 10 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:03,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:03,264 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:03,264 INFO L175 Difference]: Start difference. First operand has 510 places, 787 transitions, 11204 flow. Second operand 10 states and 1062 transitions. [2023-11-29 06:06:03,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 756 transitions, 11362 flow [2023-11-29 06:06:04,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 756 transitions, 11117 flow, removed 48 selfloop flow, removed 12 redundant places. [2023-11-29 06:06:04,382 INFO L231 Difference]: Finished difference. Result has 503 places, 721 transitions, 10061 flow [2023-11-29 06:06:04,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=9812, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10061, PETRI_PLACES=503, PETRI_TRANSITIONS=721} [2023-11-29 06:06:04,383 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 378 predicate places. [2023-11-29 06:06:04,383 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 721 transitions, 10061 flow [2023-11-29 06:06:04,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:04,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:06:04,384 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:04,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 06:06:04,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 06:06:04,584 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:06:04,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1496462420, now seen corresponding path program 21 times [2023-11-29 06:06:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200981894] [2023-11-29 06:06:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:04,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:06:05,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:05,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200981894] [2023-11-29 06:06:05,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200981894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:06:05,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363639020] [2023-11-29 06:06:05,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:06:05,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:05,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:05,061 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:05,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 06:06:05,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 06:06:05,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:06:05,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:06:05,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:05,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:06:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:06:05,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:06:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363639020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:06:05,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:06:05,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:06:05,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832579756] [2023-11-29 06:06:05,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:05,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:06:05,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:06:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:06:05,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:06:05,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 721 transitions, 10061 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:05,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:06:05,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:06:05,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:06:13,636 INFO L124 PetriNetUnfolderBase]: 7067/24466 cut-off events. [2023-11-29 06:06:13,636 INFO L125 PetriNetUnfolderBase]: For 141979/144426 co-relation queries the response was YES. [2023-11-29 06:06:14,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93838 conditions, 24466 events. 7067/24466 cut-off events. For 141979/144426 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 277521 event pairs, 669 based on Foata normal form. 453/24619 useless extension candidates. Maximal degree in co-relation 93586. Up to 4401 conditions per place. [2023-11-29 06:06:14,082 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 371 selfloop transitions, 94 changer transitions 0/779 dead transitions. [2023-11-29 06:06:14,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 779 transitions, 11823 flow [2023-11-29 06:06:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:06:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:06:14,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1364 transitions. [2023-11-29 06:06:14,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8197115384615384 [2023-11-29 06:06:14,085 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1364 transitions. [2023-11-29 06:06:14,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1364 transitions. [2023-11-29 06:06:14,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:06:14,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1364 transitions. [2023-11-29 06:06:14,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 13 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:14,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:14,089 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:14,089 INFO L175 Difference]: Start difference. First operand has 503 places, 721 transitions, 10061 flow. Second operand 13 states and 1364 transitions. [2023-11-29 06:06:14,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 779 transitions, 11823 flow [2023-11-29 06:06:15,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 779 transitions, 11655 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-29 06:06:15,057 INFO L231 Difference]: Finished difference. Result has 515 places, 736 transitions, 10516 flow [2023-11-29 06:06:15,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=9897, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10516, PETRI_PLACES=515, PETRI_TRANSITIONS=736} [2023-11-29 06:06:15,058 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 390 predicate places. [2023-11-29 06:06:15,058 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 736 transitions, 10516 flow [2023-11-29 06:06:15,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:15,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:06:15,059 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:15,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 06:06:15,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:15,259 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:06:15,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:15,260 INFO L85 PathProgramCache]: Analyzing trace with hash -323869234, now seen corresponding path program 22 times [2023-11-29 06:06:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:15,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932239316] [2023-11-29 06:06:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:15,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:06:15,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:15,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932239316] [2023-11-29 06:06:15,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932239316] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:06:15,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654206100] [2023-11-29 06:06:15,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:06:15,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:15,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:15,653 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:15,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 06:06:15,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:06:15,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:06:15,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 06:06:15,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:16,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:06:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 06:06:16,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:06:16,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-11-29 06:06:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:06:16,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654206100] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:06:16,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:06:16,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 18] total 30 [2023-11-29 06:06:16,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890891598] [2023-11-29 06:06:16,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:16,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:06:16,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:06:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2023-11-29 06:06:16,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 128 [2023-11-29 06:06:16,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 736 transitions, 10516 flow. Second operand has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:16,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:06:16,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 128 [2023-11-29 06:06:16,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:06:23,977 INFO L124 PetriNetUnfolderBase]: 6740/23584 cut-off events. [2023-11-29 06:06:23,977 INFO L125 PetriNetUnfolderBase]: For 135179/137500 co-relation queries the response was YES. [2023-11-29 06:06:24,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90214 conditions, 23584 events. 6740/23584 cut-off events. For 135179/137500 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 266442 event pairs, 627 based on Foata normal form. 530/23833 useless extension candidates. Maximal degree in co-relation 89954. Up to 4233 conditions per place. [2023-11-29 06:06:24,591 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 273 selfloop transitions, 204 changer transitions 0/792 dead transitions. [2023-11-29 06:06:24,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 792 transitions, 12003 flow [2023-11-29 06:06:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:06:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:06:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1588 transitions. [2023-11-29 06:06:24,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8270833333333333 [2023-11-29 06:06:24,593 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1588 transitions. [2023-11-29 06:06:24,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1588 transitions. [2023-11-29 06:06:24,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:06:24,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1588 transitions. [2023-11-29 06:06:24,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.86666666666666) internal successors, (1588), 15 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:24,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:24,597 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:24,597 INFO L175 Difference]: Start difference. First operand has 515 places, 736 transitions, 10516 flow. Second operand 15 states and 1588 transitions. [2023-11-29 06:06:24,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 792 transitions, 12003 flow [2023-11-29 06:06:25,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 792 transitions, 11794 flow, removed 61 selfloop flow, removed 4 redundant places. [2023-11-29 06:06:25,548 INFO L231 Difference]: Finished difference. Result has 528 places, 739 transitions, 10839 flow [2023-11-29 06:06:25,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10238, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10839, PETRI_PLACES=528, PETRI_TRANSITIONS=739} [2023-11-29 06:06:25,549 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 403 predicate places. [2023-11-29 06:06:25,549 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 739 transitions, 10839 flow [2023-11-29 06:06:25,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:25,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:06:25,550 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:25,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 06:06:25,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:25,750 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:06:25,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:25,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1688314018, now seen corresponding path program 23 times [2023-11-29 06:06:25,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:25,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453131671] [2023-11-29 06:06:25,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:25,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:06:26,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:26,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453131671] [2023-11-29 06:06:26,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453131671] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:06:26,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839343813] [2023-11-29 06:06:26,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:06:26,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:26,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:26,091 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:26,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 06:06:26,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 06:06:26,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:06:26,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:06:26,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:26,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:06:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:06:26,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:06:26,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839343813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:06:26,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:06:26,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:06:26,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601698475] [2023-11-29 06:06:26,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:06:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:06:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:06:26,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:06:26,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 739 transitions, 10839 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:26,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:06:26,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:06:26,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:06:34,123 INFO L124 PetriNetUnfolderBase]: 6495/22808 cut-off events. [2023-11-29 06:06:34,123 INFO L125 PetriNetUnfolderBase]: For 133180/135447 co-relation queries the response was YES. [2023-11-29 06:06:34,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87431 conditions, 22808 events. 6495/22808 cut-off events. For 133180/135447 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 256425 event pairs, 649 based on Foata normal form. 467/22988 useless extension candidates. Maximal degree in co-relation 87164. Up to 4081 conditions per place. [2023-11-29 06:06:34,550 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 334 selfloop transitions, 120 changer transitions 0/768 dead transitions. [2023-11-29 06:06:34,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 768 transitions, 12077 flow [2023-11-29 06:06:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:06:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:06:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1056 transitions. [2023-11-29 06:06:34,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.825 [2023-11-29 06:06:34,552 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1056 transitions. [2023-11-29 06:06:34,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1056 transitions. [2023-11-29 06:06:34,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:06:34,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1056 transitions. [2023-11-29 06:06:34,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:34,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:34,555 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:34,555 INFO L175 Difference]: Start difference. First operand has 528 places, 739 transitions, 10839 flow. Second operand 10 states and 1056 transitions. [2023-11-29 06:06:34,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 768 transitions, 12077 flow [2023-11-29 06:06:35,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 768 transitions, 11902 flow, removed 65 selfloop flow, removed 2 redundant places. [2023-11-29 06:06:35,433 INFO L231 Difference]: Finished difference. Result has 538 places, 742 transitions, 11039 flow [2023-11-29 06:06:35,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10604, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11039, PETRI_PLACES=538, PETRI_TRANSITIONS=742} [2023-11-29 06:06:35,435 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 413 predicate places. [2023-11-29 06:06:35,435 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 742 transitions, 11039 flow [2023-11-29 06:06:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:35,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:06:35,435 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:35,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 06:06:35,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 06:06:35,636 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:06:35,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1192845194, now seen corresponding path program 24 times [2023-11-29 06:06:35,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:35,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57481648] [2023-11-29 06:06:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:06:36,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57481648] [2023-11-29 06:06:36,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57481648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:06:36,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14006845] [2023-11-29 06:06:36,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:06:36,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:36,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:36,252 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:36,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 06:06:36,434 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 06:06:36,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:06:36,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:06:36,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:36,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:06:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:06:36,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:06:36,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14006845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:06:36,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:06:36,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:06:36,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248727766] [2023-11-29 06:06:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:36,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:06:36,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:06:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:06:37,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:06:37,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 742 transitions, 11039 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:37,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:06:37,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:06:37,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:06:44,579 INFO L124 PetriNetUnfolderBase]: 6745/23383 cut-off events. [2023-11-29 06:06:44,579 INFO L125 PetriNetUnfolderBase]: For 135375/137694 co-relation queries the response was YES. [2023-11-29 06:06:44,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90000 conditions, 23383 events. 6745/23383 cut-off events. For 135375/137694 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 263818 event pairs, 640 based on Foata normal form. 361/23450 useless extension candidates. Maximal degree in co-relation 89727. Up to 4317 conditions per place. [2023-11-29 06:06:45,039 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 437 selfloop transitions, 74 changer transitions 0/825 dead transitions. [2023-11-29 06:06:45,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 825 transitions, 13270 flow [2023-11-29 06:06:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:06:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:06:45,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1372 transitions. [2023-11-29 06:06:45,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8245192307692307 [2023-11-29 06:06:45,041 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1372 transitions. [2023-11-29 06:06:45,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1372 transitions. [2023-11-29 06:06:45,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:06:45,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1372 transitions. [2023-11-29 06:06:45,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.53846153846153) internal successors, (1372), 13 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:45,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:45,044 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:45,044 INFO L175 Difference]: Start difference. First operand has 538 places, 742 transitions, 11039 flow. Second operand 13 states and 1372 transitions. [2023-11-29 06:06:45,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 825 transitions, 13270 flow [2023-11-29 06:06:45,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 825 transitions, 12951 flow, removed 48 selfloop flow, removed 6 redundant places. [2023-11-29 06:06:45,943 INFO L231 Difference]: Finished difference. Result has 553 places, 772 transitions, 11633 flow [2023-11-29 06:06:45,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10722, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11633, PETRI_PLACES=553, PETRI_TRANSITIONS=772} [2023-11-29 06:06:45,945 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 428 predicate places. [2023-11-29 06:06:45,945 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 772 transitions, 11633 flow [2023-11-29 06:06:45,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:45,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:06:45,945 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:45,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 06:06:46,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 06:06:46,146 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:06:46,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:46,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1461006952, now seen corresponding path program 25 times [2023-11-29 06:06:46,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:46,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937364906] [2023-11-29 06:06:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:46,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:06:46,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937364906] [2023-11-29 06:06:46,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937364906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:06:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708657024] [2023-11-29 06:06:46,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:06:46,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:46,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:46,703 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:46,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 06:06:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:46,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:06:46,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:47,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:06:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:06:47,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:06:47,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708657024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:06:47,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:06:47,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:06:47,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163431380] [2023-11-29 06:06:47,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:47,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:06:47,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:47,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:06:47,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:06:47,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:06:47,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 772 transitions, 11633 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:47,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:06:47,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:06:47,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:06:55,395 INFO L124 PetriNetUnfolderBase]: 6752/23549 cut-off events. [2023-11-29 06:06:55,395 INFO L125 PetriNetUnfolderBase]: For 142382/144713 co-relation queries the response was YES. [2023-11-29 06:06:55,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91348 conditions, 23549 events. 6752/23549 cut-off events. For 142382/144713 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 266069 event pairs, 649 based on Foata normal form. 397/23659 useless extension candidates. Maximal degree in co-relation 91069. Up to 4354 conditions per place. [2023-11-29 06:06:55,859 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 437 selfloop transitions, 81 changer transitions 0/832 dead transitions. [2023-11-29 06:06:55,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 832 transitions, 13578 flow [2023-11-29 06:06:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:06:55,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:06:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1062 transitions. [2023-11-29 06:06:55,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8296875 [2023-11-29 06:06:55,861 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1062 transitions. [2023-11-29 06:06:55,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1062 transitions. [2023-11-29 06:06:55,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:06:55,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1062 transitions. [2023-11-29 06:06:55,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.2) internal successors, (1062), 10 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:55,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:55,863 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:55,863 INFO L175 Difference]: Start difference. First operand has 553 places, 772 transitions, 11633 flow. Second operand 10 states and 1062 transitions. [2023-11-29 06:06:55,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 832 transitions, 13578 flow [2023-11-29 06:06:56,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 832 transitions, 13201 flow, removed 155 selfloop flow, removed 3 redundant places. [2023-11-29 06:06:56,838 INFO L231 Difference]: Finished difference. Result has 564 places, 783 transitions, 11829 flow [2023-11-29 06:06:56,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=11332, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11829, PETRI_PLACES=564, PETRI_TRANSITIONS=783} [2023-11-29 06:06:56,839 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 439 predicate places. [2023-11-29 06:06:56,839 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 783 transitions, 11829 flow [2023-11-29 06:06:56,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:56,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:06:56,840 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:56,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 06:06:57,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 06:06:57,040 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:06:57,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:57,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2139135416, now seen corresponding path program 26 times [2023-11-29 06:06:57,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:57,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184815843] [2023-11-29 06:06:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:57,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:06:57,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:57,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184815843] [2023-11-29 06:06:57,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184815843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:06:57,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535611517] [2023-11-29 06:06:57,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:06:57,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:57,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:57,558 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:57,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 06:06:57,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:06:57,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:06:57,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:06:57,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:57,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:06:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:06:57,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:06:57,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535611517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:06:57,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:06:57,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:06:57,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638756556] [2023-11-29 06:06:57,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:57,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:06:57,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:57,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:06:57,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:06:58,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:06:58,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 783 transitions, 11829 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:06:58,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:06:58,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:06:58,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:07:07,080 INFO L124 PetriNetUnfolderBase]: 7133/24713 cut-off events. [2023-11-29 06:07:07,080 INFO L125 PetriNetUnfolderBase]: For 150032/152470 co-relation queries the response was YES. [2023-11-29 06:07:07,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95676 conditions, 24713 events. 7133/24713 cut-off events. For 150032/152470 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 281935 event pairs, 667 based on Foata normal form. 386/24782 useless extension candidates. Maximal degree in co-relation 95392. Up to 4575 conditions per place. [2023-11-29 06:07:07,597 INFO L140 encePairwiseOnDemand]: 110/128 looper letters, 450 selfloop transitions, 84 changer transitions 0/848 dead transitions. [2023-11-29 06:07:07,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 848 transitions, 13799 flow [2023-11-29 06:07:07,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:07:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:07:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1374 transitions. [2023-11-29 06:07:07,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8257211538461539 [2023-11-29 06:07:07,599 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1374 transitions. [2023-11-29 06:07:07,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1374 transitions. [2023-11-29 06:07:07,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:07:07,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1374 transitions. [2023-11-29 06:07:07,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.6923076923077) internal successors, (1374), 13 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:07,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:07,604 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:07,604 INFO L175 Difference]: Start difference. First operand has 564 places, 783 transitions, 11829 flow. Second operand 13 states and 1374 transitions. [2023-11-29 06:07:07,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 848 transitions, 13799 flow [2023-11-29 06:07:08,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 848 transitions, 13438 flow, removed 134 selfloop flow, removed 4 redundant places. [2023-11-29 06:07:08,653 INFO L231 Difference]: Finished difference. Result has 577 places, 806 transitions, 12251 flow [2023-11-29 06:07:08,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=11599, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12251, PETRI_PLACES=577, PETRI_TRANSITIONS=806} [2023-11-29 06:07:08,654 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 452 predicate places. [2023-11-29 06:07:08,654 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 806 transitions, 12251 flow [2023-11-29 06:07:08,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:08,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:07:08,655 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:08,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 06:07:08,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 06:07:08,855 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:07:08,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:08,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2025917660, now seen corresponding path program 27 times [2023-11-29 06:07:08,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:08,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002284500] [2023-11-29 06:07:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:08,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:07:09,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:09,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002284500] [2023-11-29 06:07:09,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002284500] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:09,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182851887] [2023-11-29 06:07:09,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:07:09,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:09,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:09,425 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:09,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 06:07:09,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 06:07:09,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:07:09,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:07:09,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:09,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:07:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:07:09,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:09,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182851887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:09,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:07:09,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 06:07:09,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680645450] [2023-11-29 06:07:09,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:09,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:07:09,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:09,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:07:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:07:10,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:07:10,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 806 transitions, 12251 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:10,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:07:10,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:07:10,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:07:18,998 INFO L124 PetriNetUnfolderBase]: 7371/25371 cut-off events. [2023-11-29 06:07:18,999 INFO L125 PetriNetUnfolderBase]: For 151192/153833 co-relation queries the response was YES. [2023-11-29 06:07:19,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98021 conditions, 25371 events. 7371/25371 cut-off events. For 151192/153833 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 291087 event pairs, 686 based on Foata normal form. 464/25511 useless extension candidates. Maximal degree in co-relation 97732. Up to 4723 conditions per place. [2023-11-29 06:07:19,555 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 460 selfloop transitions, 92 changer transitions 0/866 dead transitions. [2023-11-29 06:07:19,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 866 transitions, 14087 flow [2023-11-29 06:07:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:07:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:07:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1365 transitions. [2023-11-29 06:07:19,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2023-11-29 06:07:19,557 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1365 transitions. [2023-11-29 06:07:19,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1365 transitions. [2023-11-29 06:07:19,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:07:19,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1365 transitions. [2023-11-29 06:07:19,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:19,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:19,560 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:19,560 INFO L175 Difference]: Start difference. First operand has 577 places, 806 transitions, 12251 flow. Second operand 13 states and 1365 transitions. [2023-11-29 06:07:19,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 866 transitions, 14087 flow [2023-11-29 06:07:20,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 866 transitions, 13846 flow, removed 58 selfloop flow, removed 7 redundant places. [2023-11-29 06:07:20,762 INFO L231 Difference]: Finished difference. Result has 589 places, 822 transitions, 12582 flow [2023-11-29 06:07:20,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=12017, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12582, PETRI_PLACES=589, PETRI_TRANSITIONS=822} [2023-11-29 06:07:20,763 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 464 predicate places. [2023-11-29 06:07:20,764 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 822 transitions, 12582 flow [2023-11-29 06:07:20,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:20,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:07:20,764 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:20,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 06:07:20,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 06:07:20,965 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:07:20,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash 436717186, now seen corresponding path program 28 times [2023-11-29 06:07:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:20,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347231393] [2023-11-29 06:07:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:07:21,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347231393] [2023-11-29 06:07:21,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347231393] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77139203] [2023-11-29 06:07:21,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:07:21,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:21,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:21,439 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:21,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 06:07:21,661 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:07:21,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:07:21,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:07:21,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:21,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:07:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:07:21,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:21,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77139203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:21,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:07:21,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-11-29 06:07:21,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134597707] [2023-11-29 06:07:21,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:21,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:07:21,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:07:21,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:07:22,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:07:22,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 822 transitions, 12582 flow. Second operand has 9 states, 9 states have (on average 97.77777777777777) internal successors, (880), 9 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:22,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:07:22,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:07:22,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:07:30,770 INFO L124 PetriNetUnfolderBase]: 7084/24620 cut-off events. [2023-11-29 06:07:30,770 INFO L125 PetriNetUnfolderBase]: For 145077/147630 co-relation queries the response was YES. [2023-11-29 06:07:31,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94857 conditions, 24620 events. 7084/24620 cut-off events. For 145077/147630 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 282000 event pairs, 638 based on Foata normal form. 525/24836 useless extension candidates. Maximal degree in co-relation 94563. Up to 4557 conditions per place. [2023-11-29 06:07:31,501 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 342 selfloop transitions, 218 changer transitions 0/874 dead transitions. [2023-11-29 06:07:31,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 874 transitions, 14178 flow [2023-11-29 06:07:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:07:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:07:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1583 transitions. [2023-11-29 06:07:31,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8244791666666667 [2023-11-29 06:07:31,503 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1583 transitions. [2023-11-29 06:07:31,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1583 transitions. [2023-11-29 06:07:31,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:07:31,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1583 transitions. [2023-11-29 06:07:31,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.53333333333333) internal successors, (1583), 15 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:31,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:31,507 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:31,507 INFO L175 Difference]: Start difference. First operand has 589 places, 822 transitions, 12582 flow. Second operand 15 states and 1583 transitions. [2023-11-29 06:07:31,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 874 transitions, 14178 flow [2023-11-29 06:07:32,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 874 transitions, 14015 flow, removed 31 selfloop flow, removed 4 redundant places. [2023-11-29 06:07:32,570 INFO L231 Difference]: Finished difference. Result has 601 places, 828 transitions, 13018 flow [2023-11-29 06:07:32,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=12357, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=13018, PETRI_PLACES=601, PETRI_TRANSITIONS=828} [2023-11-29 06:07:32,571 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 476 predicate places. [2023-11-29 06:07:32,571 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 828 transitions, 13018 flow [2023-11-29 06:07:32,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 97.77777777777777) internal successors, (880), 9 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:32,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:07:32,571 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:32,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 06:07:32,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 06:07:32,772 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:07:32,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:32,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1008615094, now seen corresponding path program 29 times [2023-11-29 06:07:32,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:32,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101124666] [2023-11-29 06:07:32,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:32,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:07:33,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:33,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101124666] [2023-11-29 06:07:33,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101124666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:33,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579750544] [2023-11-29 06:07:33,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:07:33,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:33,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:33,346 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:33,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 06:07:33,547 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 06:07:33,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:07:33,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:07:33,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:33,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:07:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:07:33,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:33,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579750544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:33,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:07:33,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:07:33,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874056517] [2023-11-29 06:07:33,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:33,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:07:33,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:33,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:07:33,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:07:34,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:07:34,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 828 transitions, 13018 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:34,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:07:34,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:07:34,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:07:42,629 INFO L124 PetriNetUnfolderBase]: 7049/24388 cut-off events. [2023-11-29 06:07:42,629 INFO L125 PetriNetUnfolderBase]: For 148251/150735 co-relation queries the response was YES. [2023-11-29 06:07:43,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94465 conditions, 24388 events. 7049/24388 cut-off events. For 148251/150735 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 279882 event pairs, 654 based on Foata normal form. 464/24538 useless extension candidates. Maximal degree in co-relation 94165. Up to 4558 conditions per place. [2023-11-29 06:07:43,397 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 441 selfloop transitions, 139 changer transitions 0/894 dead transitions. [2023-11-29 06:07:43,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 894 transitions, 14997 flow [2023-11-29 06:07:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:07:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:07:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1365 transitions. [2023-11-29 06:07:43,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2023-11-29 06:07:43,399 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1365 transitions. [2023-11-29 06:07:43,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1365 transitions. [2023-11-29 06:07:43,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:07:43,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1365 transitions. [2023-11-29 06:07:43,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:43,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:43,402 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:43,402 INFO L175 Difference]: Start difference. First operand has 601 places, 828 transitions, 13018 flow. Second operand 13 states and 1365 transitions. [2023-11-29 06:07:43,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 894 transitions, 14997 flow [2023-11-29 06:07:44,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 894 transitions, 14786 flow, removed 68 selfloop flow, removed 2 redundant places. [2023-11-29 06:07:44,479 INFO L231 Difference]: Finished difference. Result has 617 places, 841 transitions, 13548 flow [2023-11-29 06:07:44,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=12769, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13548, PETRI_PLACES=617, PETRI_TRANSITIONS=841} [2023-11-29 06:07:44,480 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 492 predicate places. [2023-11-29 06:07:44,480 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 841 transitions, 13548 flow [2023-11-29 06:07:44,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:44,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:07:44,480 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:44,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 06:07:44,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 06:07:44,681 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:07:44,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:44,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1144544766, now seen corresponding path program 30 times [2023-11-29 06:07:44,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:44,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023220550] [2023-11-29 06:07:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:44,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:07:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023220550] [2023-11-29 06:07:45,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023220550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898453095] [2023-11-29 06:07:45,159 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:07:45,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:45,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:45,160 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:45,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 06:07:45,342 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 06:07:45,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:07:45,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:07:45,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:45,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:07:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:07:45,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:45,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898453095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:45,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:07:45,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:07:45,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959322854] [2023-11-29 06:07:45,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:45,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:07:45,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:45,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:07:45,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:07:45,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:07:45,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 841 transitions, 13548 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:45,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:07:45,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:07:45,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:07:54,586 INFO L124 PetriNetUnfolderBase]: 7054/24458 cut-off events. [2023-11-29 06:07:54,586 INFO L125 PetriNetUnfolderBase]: For 151475/153892 co-relation queries the response was YES. [2023-11-29 06:07:55,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95461 conditions, 24458 events. 7054/24458 cut-off events. For 151475/153892 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 280853 event pairs, 659 based on Foata normal form. 410/24555 useless extension candidates. Maximal degree in co-relation 95154. Up to 4578 conditions per place. [2023-11-29 06:07:55,163 INFO L140 encePairwiseOnDemand]: 112/128 looper letters, 482 selfloop transitions, 90 changer transitions 0/886 dead transitions. [2023-11-29 06:07:55,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 886 transitions, 15140 flow [2023-11-29 06:07:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:07:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:07:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1061 transitions. [2023-11-29 06:07:55,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.82890625 [2023-11-29 06:07:55,165 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1061 transitions. [2023-11-29 06:07:55,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1061 transitions. [2023-11-29 06:07:55,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:07:55,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1061 transitions. [2023-11-29 06:07:55,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.1) internal successors, (1061), 10 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:55,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:55,167 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:55,167 INFO L175 Difference]: Start difference. First operand has 617 places, 841 transitions, 13548 flow. Second operand 10 states and 1061 transitions. [2023-11-29 06:07:55,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 886 transitions, 15140 flow [2023-11-29 06:07:56,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 886 transitions, 14896 flow, removed 103 selfloop flow, removed 2 redundant places. [2023-11-29 06:07:56,572 INFO L231 Difference]: Finished difference. Result has 628 places, 849 transitions, 13727 flow [2023-11-29 06:07:56,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=13304, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13727, PETRI_PLACES=628, PETRI_TRANSITIONS=849} [2023-11-29 06:07:56,573 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 503 predicate places. [2023-11-29 06:07:56,573 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 849 transitions, 13727 flow [2023-11-29 06:07:56,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:56,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:07:56,574 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:56,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 06:07:56,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 06:07:56,774 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 06:07:56,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:56,775 INFO L85 PathProgramCache]: Analyzing trace with hash 696659592, now seen corresponding path program 31 times [2023-11-29 06:07:56,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:56,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304379596] [2023-11-29 06:07:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:56,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 06:07:57,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:57,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304379596] [2023-11-29 06:07:57,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304379596] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:57,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97123446] [2023-11-29 06:07:57,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:07:57,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:57,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:57,289 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:57,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b3ad38f-6a61-4cb3-8eb0-92dd2e7197c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 06:07:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:57,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:07:57,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:57,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:07:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 06:07:57,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:07:57,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97123446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:57,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:07:57,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 06:07:57,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271288058] [2023-11-29 06:07:57,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:57,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:07:57,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:57,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:07:57,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:07:58,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 06:07:58,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 849 transitions, 13727 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:58,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:07:58,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 06:07:58,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand