./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu --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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:34,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:34,896 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:00:34,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:34,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:34,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:34,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:34,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:34,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:34,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:34,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:34,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:34,975 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:34,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:34,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:34,980 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:34,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:34,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:34,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:34,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:34,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:34,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:34,984 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:00:34,985 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:34,986 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:34,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:34,987 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:34,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:34,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:34,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:34,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:34,992 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:34,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:34,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:34,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:34,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:34,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:34,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:34,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:34,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:34,995 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:34,996 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_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2023-11-19 08:00:35,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:35,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:35,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:35,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:35,504 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:35,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-11-19 08:00:39,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:39,557 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:39,558 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-11-19 08:00:39,580 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/data/94af16643/899108a32b814061bb8b180962ff15fb/FLAGb696400dc [2023-11-19 08:00:39,619 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/data/94af16643/899108a32b814061bb8b180962ff15fb [2023-11-19 08:00:39,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:39,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:39,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:39,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:39,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:39,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f83022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39, skipping insertion in model container [2023-11-19 08:00:39,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,752 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:40,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:40,481 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:40,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:40,617 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:40,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40 WrapperNode [2023-11-19 08:00:40,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:40,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:40,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:40,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:40,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,716 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 264 [2023-11-19 08:00:40,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:40,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:40,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:40,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:40,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:40,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:40,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:40,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:40,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:40,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:40,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:40,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:00:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:00:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:00:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:00:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 08:00:40,853 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 08:00:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:40,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:40,855 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:00:41,016 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:41,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:41,565 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:41,577 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:41,578 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-19 08:00:41,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:41 BoogieIcfgContainer [2023-11-19 08:00:41,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:41,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:41,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:41,590 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:41,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:39" (1/3) ... [2023-11-19 08:00:41,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e843480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:41, skipping insertion in model container [2023-11-19 08:00:41,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (2/3) ... [2023-11-19 08:00:41,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e843480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:41, skipping insertion in model container [2023-11-19 08:00:41,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:41" (3/3) ... [2023-11-19 08:00:41,594 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2023-11-19 08:00:41,603 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:00:41,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:41,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 08:00:41,615 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:00:41,782 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 08:00:41,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 285 transitions, 577 flow [2023-11-19 08:00:41,976 INFO L124 PetriNetUnfolderBase]: 48/404 cut-off events. [2023-11-19 08:00:41,977 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:00:41,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 404 events. 48/404 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1650 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2023-11-19 08:00:41,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 285 transitions, 577 flow [2023-11-19 08:00:42,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 285 transitions, 577 flow [2023-11-19 08:00:42,005 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:42,016 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 285 transitions, 577 flow [2023-11-19 08:00:42,018 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 285 transitions, 577 flow [2023-11-19 08:00:42,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 285 transitions, 577 flow [2023-11-19 08:00:42,136 INFO L124 PetriNetUnfolderBase]: 48/404 cut-off events. [2023-11-19 08:00:42,136 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:00:42,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 404 events. 48/404 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1650 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2023-11-19 08:00:42,167 INFO L119 LiptonReduction]: Number of co-enabled transitions 28250 [2023-11-19 08:00:46,318 INFO L134 LiptonReduction]: Checked pairs total: 103958 [2023-11-19 08:00:46,318 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-11-19 08:00:46,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:46,357 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;@495dece6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:46,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 08:00:46,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:46,364 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2023-11-19 08:00:46,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:46,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:46,365 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 08:00:46,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-19 08:00:46,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash -670717845, now seen corresponding path program 1 times [2023-11-19 08:00:46,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642304761] [2023-11-19 08:00:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:46,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:46,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:46,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642304761] [2023-11-19 08:00:46,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642304761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:46,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:46,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:46,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551724822] [2023-11-19 08:00:46,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:46,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:46,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:46,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:46,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:46,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 485 [2023-11-19 08:00:46,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 133 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:46,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:46,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 485 [2023-11-19 08:00:46,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:47,235 INFO L124 PetriNetUnfolderBase]: 399/1524 cut-off events. [2023-11-19 08:00:47,235 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2023-11-19 08:00:47,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1524 events. 399/1524 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10688 event pairs, 357 based on Foata normal form. 199/1558 useless extension candidates. Maximal degree in co-relation 2212. Up to 779 conditions per place. [2023-11-19 08:00:47,247 INFO L140 encePairwiseOnDemand]: 460/485 looper letters, 43 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-11-19 08:00:47,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 321 flow [2023-11-19 08:00:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:47,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-11-19 08:00:47,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539518900343643 [2023-11-19 08:00:47,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-11-19 08:00:47,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-11-19 08:00:47,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:47,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-11-19 08:00:47,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:47,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:47,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:47,302 INFO L175 Difference]: Start difference. First operand has 110 places, 133 transitions, 273 flow. Second operand 3 states and 806 transitions. [2023-11-19 08:00:47,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 321 flow [2023-11-19 08:00:47,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:47,311 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 241 flow [2023-11-19 08:00:47,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2023-11-19 08:00:47,317 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2023-11-19 08:00:47,318 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 241 flow [2023-11-19 08:00:47,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:47,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:47,319 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:47,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:47,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-19 08:00:47,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:47,321 INFO L85 PathProgramCache]: Analyzing trace with hash 309295352, now seen corresponding path program 1 times [2023-11-19 08:00:47,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:47,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388830348] [2023-11-19 08:00:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:47,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:47,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388830348] [2023-11-19 08:00:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388830348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372201646] [2023-11-19 08:00:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:47,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:47,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:47,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:47,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:47,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:00:47,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:47,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:47,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:47,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372201646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:47,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:47,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 08:00:47,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624379477] [2023-11-19 08:00:47,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:47,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:00:47,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:00:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:00:47,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 485 [2023-11-19 08:00:47,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 246.5) internal successors, (1479), 6 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:47,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:47,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 485 [2023-11-19 08:00:47,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:48,057 INFO L124 PetriNetUnfolderBase]: 399/1527 cut-off events. [2023-11-19 08:00:48,057 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2023-11-19 08:00:48,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2325 conditions, 1527 events. 399/1527 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10702 event pairs, 357 based on Foata normal form. 0/1362 useless extension candidates. Maximal degree in co-relation 2313. Up to 779 conditions per place. [2023-11-19 08:00:48,068 INFO L140 encePairwiseOnDemand]: 482/485 looper letters, 43 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-11-19 08:00:48,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 349 flow [2023-11-19 08:00:48,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:00:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:00:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1521 transitions. [2023-11-19 08:00:48,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522680412371134 [2023-11-19 08:00:48,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1521 transitions. [2023-11-19 08:00:48,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1521 transitions. [2023-11-19 08:00:48,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:48,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1521 transitions. [2023-11-19 08:00:48,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:48,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 485.0) internal successors, (3395), 7 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:48,093 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 485.0) internal successors, (3395), 7 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:48,093 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 241 flow. Second operand 6 states and 1521 transitions. [2023-11-19 08:00:48,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 349 flow [2023-11-19 08:00:48,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 345 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:48,099 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 273 flow [2023-11-19 08:00:48,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2023-11-19 08:00:48,100 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 10 predicate places. [2023-11-19 08:00:48,100 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 273 flow [2023-11-19 08:00:48,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.5) internal successors, (1479), 6 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:48,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:48,102 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 08:00:48,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:00:48,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:48,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-19 08:00:48,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:48,325 INFO L85 PathProgramCache]: Analyzing trace with hash 205251499, now seen corresponding path program 2 times [2023-11-19 08:00:48,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:48,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302426667] [2023-11-19 08:00:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:48,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:48,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302426667] [2023-11-19 08:00:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302426667] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:48,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396792690] [2023-11-19 08:00:48,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:00:48,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:48,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:48,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:48,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:00:48,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:00:48,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:48,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:00:48,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:48,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:48,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396792690] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:48,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:48,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 08:00:48,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569817445] [2023-11-19 08:00:48,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:48,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:00:48,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:00:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:00:48,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 485 [2023-11-19 08:00:48,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 273 flow. Second operand has 12 states, 12 states have (on average 246.25) internal successors, (2955), 12 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:48,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:48,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 485 [2023-11-19 08:00:48,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:49,173 INFO L124 PetriNetUnfolderBase]: 399/1533 cut-off events. [2023-11-19 08:00:49,174 INFO L125 PetriNetUnfolderBase]: For 23/24 co-relation queries the response was YES. [2023-11-19 08:00:49,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 1533 events. 399/1533 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10681 event pairs, 357 based on Foata normal form. 6/1375 useless extension candidates. Maximal degree in co-relation 2304. Up to 779 conditions per place. [2023-11-19 08:00:49,186 INFO L140 encePairwiseOnDemand]: 482/485 looper letters, 43 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2023-11-19 08:00:49,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 417 flow [2023-11-19 08:00:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:00:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 08:00:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3000 transitions. [2023-11-19 08:00:49,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154639175257731 [2023-11-19 08:00:49,198 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3000 transitions. [2023-11-19 08:00:49,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3000 transitions. [2023-11-19 08:00:49,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:49,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3000 transitions. [2023-11-19 08:00:49,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 250.0) internal successors, (3000), 12 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 485.0) internal successors, (6305), 13 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,232 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 485.0) internal successors, (6305), 13 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,233 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 273 flow. Second operand 12 states and 3000 transitions. [2023-11-19 08:00:49,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 417 flow [2023-11-19 08:00:49,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 403 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:49,242 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 343 flow [2023-11-19 08:00:49,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=343, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2023-11-19 08:00:49,245 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2023-11-19 08:00:49,246 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 343 flow [2023-11-19 08:00:49,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 246.25) internal successors, (2955), 12 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:49,249 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 08:00:49,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:49,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:49,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-19 08:00:49,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:49,472 INFO L85 PathProgramCache]: Analyzing trace with hash 566292619, now seen corresponding path program 3 times [2023-11-19 08:00:49,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:49,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208865291] [2023-11-19 08:00:49,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:49,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:49,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:49,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:49,560 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:00:49,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 08:00:49,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-19 08:00:49,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-19 08:00:49,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-19 08:00:49,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-19 08:00:49,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-19 08:00:49,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-19 08:00:49,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-19 08:00:49,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-19 08:00:49,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-19 08:00:49,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-19 08:00:49,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-19 08:00:49,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-19 08:00:49,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-19 08:00:49,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-19 08:00:49,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-19 08:00:49,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-19 08:00:49,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:49,573 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-19 08:00:49,576 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:00:49,576 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:00:49,655 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:00:49,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 400 transitions, 816 flow [2023-11-19 08:00:49,833 INFO L124 PetriNetUnfolderBase]: 80/670 cut-off events. [2023-11-19 08:00:49,833 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 08:00:49,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 670 events. 80/670 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3383 event pairs, 0 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 406. Up to 12 conditions per place. [2023-11-19 08:00:49,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 400 transitions, 816 flow [2023-11-19 08:00:49,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 400 transitions, 816 flow [2023-11-19 08:00:49,856 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:49,856 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 357 places, 400 transitions, 816 flow [2023-11-19 08:00:49,856 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 357 places, 400 transitions, 816 flow [2023-11-19 08:00:49,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 400 transitions, 816 flow [2023-11-19 08:00:50,009 INFO L124 PetriNetUnfolderBase]: 80/670 cut-off events. [2023-11-19 08:00:50,010 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 08:00:50,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 670 events. 80/670 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3383 event pairs, 0 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 406. Up to 12 conditions per place. [2023-11-19 08:00:50,067 INFO L119 LiptonReduction]: Number of co-enabled transitions 84524 [2023-11-19 08:00:54,901 INFO L134 LiptonReduction]: Checked pairs total: 311707 [2023-11-19 08:00:54,901 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-11-19 08:00:54,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:54,906 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;@495dece6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:54,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 08:00:54,939 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:54,939 INFO L124 PetriNetUnfolderBase]: 17/78 cut-off events. [2023-11-19 08:00:54,940 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:00:54,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:54,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:54,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 08:00:54,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:54,945 INFO L85 PathProgramCache]: Analyzing trace with hash -16498644, now seen corresponding path program 1 times [2023-11-19 08:00:54,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:54,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558060410] [2023-11-19 08:00:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:54,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:55,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:55,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558060410] [2023-11-19 08:00:55,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558060410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:55,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:55,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:55,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469907610] [2023-11-19 08:00:55,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:55,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:55,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:55,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:55,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:55,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 679 [2023-11-19 08:00:55,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 195 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:55,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:55,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 679 [2023-11-19 08:00:55,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:00,190 INFO L124 PetriNetUnfolderBase]: 14691/34818 cut-off events. [2023-11-19 08:01:00,190 INFO L125 PetriNetUnfolderBase]: For 218/266 co-relation queries the response was YES. [2023-11-19 08:01:00,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56175 conditions, 34818 events. 14691/34818 cut-off events. For 218/266 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 376800 event pairs, 13600 based on Foata normal form. 5665/37253 useless extension candidates. Maximal degree in co-relation 20590. Up to 21259 conditions per place. [2023-11-19 08:01:00,492 INFO L140 encePairwiseOnDemand]: 643/679 looper letters, 62 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-11-19 08:01:00,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 470 flow [2023-11-19 08:01:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:01:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1133 transitions. [2023-11-19 08:01:00,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562101129111439 [2023-11-19 08:01:00,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1133 transitions. [2023-11-19 08:01:00,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1133 transitions. [2023-11-19 08:01:00,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:00,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1133 transitions. [2023-11-19 08:01:00,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 377.6666666666667) internal successors, (1133), 3 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,510 INFO L175 Difference]: Start difference. First operand has 161 places, 195 transitions, 406 flow. Second operand 3 states and 1133 transitions. [2023-11-19 08:01:00,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 470 flow [2023-11-19 08:01:00,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:01:00,521 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 352 flow [2023-11-19 08:01:00,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2023-11-19 08:01:00,524 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2023-11-19 08:01:00,524 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 352 flow [2023-11-19 08:01:00,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:00,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:00,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:01:00,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 08:01:00,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1265829862, now seen corresponding path program 1 times [2023-11-19 08:01:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835680573] [2023-11-19 08:01:00,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:00,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835680573] [2023-11-19 08:01:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835680573] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080735606] [2023-11-19 08:01:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:00,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:01:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:01,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:01,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:01,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:01,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080735606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:01,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:01:01,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 08:01:01,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717255677] [2023-11-19 08:01:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:01,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:01,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:01,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 679 [2023-11-19 08:01:01,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:01,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:01,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 679 [2023-11-19 08:01:01,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:04,965 INFO L124 PetriNetUnfolderBase]: 14723/34987 cut-off events. [2023-11-19 08:01:04,966 INFO L125 PetriNetUnfolderBase]: For 158/173 co-relation queries the response was YES. [2023-11-19 08:01:05,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56334 conditions, 34987 events. 14723/34987 cut-off events. For 158/173 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 380333 event pairs, 11915 based on Foata normal form. 0/31715 useless extension candidates. Maximal degree in co-relation 56321. Up to 21223 conditions per place. [2023-11-19 08:01:05,268 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 81 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2023-11-19 08:01:05,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 556 flow [2023-11-19 08:01:05,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:01:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1118 transitions. [2023-11-19 08:01:05,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488463426607757 [2023-11-19 08:01:05,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1118 transitions. [2023-11-19 08:01:05,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1118 transitions. [2023-11-19 08:01:05,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:05,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1118 transitions. [2023-11-19 08:01:05,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:05,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:05,293 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:05,294 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 352 flow. Second operand 3 states and 1118 transitions. [2023-11-19 08:01:05,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 556 flow [2023-11-19 08:01:05,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 182 transitions, 552 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:05,304 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 360 flow [2023-11-19 08:01:05,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2023-11-19 08:01:05,309 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2023-11-19 08:01:05,309 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 360 flow [2023-11-19 08:01:05,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:05,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:05,310 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:05,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:01:05,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 08:01:05,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:05,533 INFO L85 PathProgramCache]: Analyzing trace with hash 88466720, now seen corresponding path program 1 times [2023-11-19 08:01:05,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:05,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99867984] [2023-11-19 08:01:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:05,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:01:05,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:05,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99867984] [2023-11-19 08:01:05,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99867984] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446025664] [2023-11-19 08:01:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:05,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:05,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:05,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:05,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:01:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:06,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:01:06,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:01:06,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:01:06,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446025664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:06,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 08:01:06,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407574265] [2023-11-19 08:01:06,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:06,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:06,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:06,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:06,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:06,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 679 [2023-11-19 08:01:06,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 360 flow. Second operand has 7 states, 7 states have (on average 345.7142857142857) internal successors, (2420), 7 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:06,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:06,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 679 [2023-11-19 08:01:06,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:10,337 INFO L124 PetriNetUnfolderBase]: 14723/34964 cut-off events. [2023-11-19 08:01:10,337 INFO L125 PetriNetUnfolderBase]: For 855/870 co-relation queries the response was YES. [2023-11-19 08:01:10,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57019 conditions, 34964 events. 14723/34964 cut-off events. For 855/870 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 379442 event pairs, 13600 based on Foata normal form. 3/31995 useless extension candidates. Maximal degree in co-relation 56991. Up to 21242 conditions per place. [2023-11-19 08:01:10,552 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 63 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-11-19 08:01:10,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 508 flow [2023-11-19 08:01:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:01:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2134 transitions. [2023-11-19 08:01:10,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-11-19 08:01:10,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2134 transitions. [2023-11-19 08:01:10,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2134 transitions. [2023-11-19 08:01:10,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:10,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2134 transitions. [2023-11-19 08:01:10,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 355.6666666666667) internal successors, (2134), 6 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:10,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 679.0) internal successors, (4753), 7 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:10,589 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 679.0) internal successors, (4753), 7 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:10,589 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 360 flow. Second operand 6 states and 2134 transitions. [2023-11-19 08:01:10,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 508 flow [2023-11-19 08:01:10,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 167 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:10,596 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 394 flow [2023-11-19 08:01:10,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2023-11-19 08:01:10,599 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 12 predicate places. [2023-11-19 08:01:10,599 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 394 flow [2023-11-19 08:01:10,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.7142857142857) internal successors, (2420), 7 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:10,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:10,601 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 08:01:10,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:10,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 08:01:10,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 08:01:10,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash 189743575, now seen corresponding path program 2 times [2023-11-19 08:01:10,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:10,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498203587] [2023-11-19 08:01:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:10,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:01:10,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:10,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498203587] [2023-11-19 08:01:10,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498203587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:10,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644046342] [2023-11-19 08:01:10,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:01:10,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:10,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:10,968 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:10,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:01:11,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:01:11,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:11,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:01:11,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:01:11,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:01:11,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644046342] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:11,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:11,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 08:01:11,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700539812] [2023-11-19 08:01:11,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:11,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:01:11,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:11,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:01:11,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:01:11,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 679 [2023-11-19 08:01:11,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 394 flow. Second operand has 13 states, 13 states have (on average 345.38461538461536) internal successors, (4490), 13 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:11,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:11,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 679 [2023-11-19 08:01:11,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:15,573 INFO L124 PetriNetUnfolderBase]: 14723/34970 cut-off events. [2023-11-19 08:01:15,574 INFO L125 PetriNetUnfolderBase]: For 889/904 co-relation queries the response was YES. [2023-11-19 08:01:15,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57040 conditions, 34970 events. 14723/34970 cut-off events. For 889/904 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 379272 event pairs, 13600 based on Foata normal form. 6/32004 useless extension candidates. Maximal degree in co-relation 56980. Up to 21242 conditions per place. [2023-11-19 08:01:15,991 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 63 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2023-11-19 08:01:15,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 173 transitions, 578 flow [2023-11-19 08:01:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:01:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 08:01:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4207 transitions. [2023-11-19 08:01:16,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163230240549829 [2023-11-19 08:01:16,009 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4207 transitions. [2023-11-19 08:01:16,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4207 transitions. [2023-11-19 08:01:16,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:16,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4207 transitions. [2023-11-19 08:01:16,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 350.5833333333333) internal successors, (4207), 12 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:16,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 679.0) internal successors, (8827), 13 states have internal predecessors, (8827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:16,050 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 679.0) internal successors, (8827), 13 states have internal predecessors, (8827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:16,051 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 394 flow. Second operand 12 states and 4207 transitions. [2023-11-19 08:01:16,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 173 transitions, 578 flow [2023-11-19 08:01:16,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 173 transitions, 564 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:16,058 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 464 flow [2023-11-19 08:01:16,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=464, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2023-11-19 08:01:16,059 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 28 predicate places. [2023-11-19 08:01:16,059 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 464 flow [2023-11-19 08:01:16,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 345.38461538461536) internal successors, (4490), 13 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:16,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:16,062 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 08:01:16,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:16,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5882fe25-22e9-442c-aadf-9c4bfe01c33c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:16,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 08:01:16,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1342943945, now seen corresponding path program 3 times [2023-11-19 08:01:16,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:16,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974591941] [2023-11-19 08:01:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:16,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:16,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:16,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:16,368 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:01:16,368 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-19 08:01:16,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-19 08:01:16,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-19 08:01:16,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-19 08:01:16,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-19 08:01:16,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-19 08:01:16,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-19 08:01:16,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-19 08:01:16,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-19 08:01:16,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-19 08:01:16,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-19 08:01:16,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-19 08:01:16,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-19 08:01:16,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-19 08:01:16,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-19 08:01:16,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-19 08:01:16,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-19 08:01:16,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-19 08:01:16,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-19 08:01:16,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-19 08:01:16,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-19 08:01:16,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-19 08:01:16,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:01:16,373 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-19 08:01:16,374 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:01:16,375 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:01:16,484 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:01:16,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 515 transitions, 1057 flow [2023-11-19 08:01:16,743 INFO L124 PetriNetUnfolderBase]: 117/983 cut-off events. [2023-11-19 08:01:16,743 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-11-19 08:01:16,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 983 events. 117/983 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5509 event pairs, 1 based on Foata normal form. 0/819 useless extension candidates. Maximal degree in co-relation 678. Up to 16 conditions per place. [2023-11-19 08:01:16,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 459 places, 515 transitions, 1057 flow [2023-11-19 08:01:16,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 515 transitions, 1057 flow [2023-11-19 08:01:16,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:16,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 459 places, 515 transitions, 1057 flow [2023-11-19 08:01:16,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 459 places, 515 transitions, 1057 flow [2023-11-19 08:01:16,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 515 transitions, 1057 flow [2023-11-19 08:01:17,117 INFO L124 PetriNetUnfolderBase]: 117/983 cut-off events. [2023-11-19 08:01:17,118 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-11-19 08:01:17,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 983 events. 117/983 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5509 event pairs, 1 based on Foata normal form. 0/819 useless extension candidates. Maximal degree in co-relation 678. Up to 16 conditions per place. [2023-11-19 08:01:17,242 INFO L119 LiptonReduction]: Number of co-enabled transitions 166110