./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2804a3d9c88e5ebdd5cd91ad2518af39bf332bf1cb9f17b40166d15deda7338f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:25:45,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:25:45,559 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:25:45,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:25:45,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:25:45,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:25:45,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:25:45,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:25:45,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:25:45,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:25:45,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:25:45,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:25:45,609 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:25:45,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:25:45,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:25:45,612 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:25:45,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:25:45,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:25:45,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:25:45,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:25:45,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:25:45,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:25:45,615 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:25:45,616 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:25:45,618 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:25:45,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:25:45,618 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:25:45,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:25:45,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:25:45,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:25:45,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:45,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:25:45,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:25:45,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:25:45,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:25:45,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:25:45,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:25:45,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:25:45,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:25:45,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:25:45,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:25:45,625 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_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2804a3d9c88e5ebdd5cd91ad2518af39bf332bf1cb9f17b40166d15deda7338f [2023-11-21 22:25:45,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:25:46,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:25:46,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:25:46,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:25:46,025 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:25:46,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr.i [2023-11-21 22:25:49,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:25:49,573 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:25:49,574 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr.i [2023-11-21 22:25:49,617 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/data/d7507b0d0/91eb1595dd5944b8a5377c7c7208b2be/FLAG42227692a [2023-11-21 22:25:49,636 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/data/d7507b0d0/91eb1595dd5944b8a5377c7c7208b2be [2023-11-21 22:25:49,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:25:49,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:25:49,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:49,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:25:49,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:25:49,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:49" (1/1) ... [2023-11-21 22:25:49,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1305ac35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:49, skipping insertion in model container [2023-11-21 22:25:49,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:49" (1/1) ... [2023-11-21 22:25:49,724 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:25:49,909 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:25:50,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:50,308 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:25:50,340 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:25:50,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:50,538 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:25:50,547 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:25:50,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50 WrapperNode [2023-11-21 22:25:50,547 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:50,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:50,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:25:50,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:25:50,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,643 INFO L138 Inliner]: procedures = 266, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2023-11-21 22:25:50,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:50,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:25:50,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:25:50,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:25:50,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:25:50,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:25:50,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:25:50,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:25:50,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (1/1) ... [2023-11-21 22:25:50,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:50,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:50,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:25:50,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:25:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:25:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:25:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:25:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:25:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:25:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:25:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:25:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-21 22:25:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-21 22:25:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:25:50,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:25:50,798 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:25:50,986 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:25:50,989 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:25:51,320 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:25:51,332 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:25:51,333 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:25:51,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:51 BoogieIcfgContainer [2023-11-21 22:25:51,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:25:51,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:25:51,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:25:51,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:25:51,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:25:49" (1/3) ... [2023-11-21 22:25:51,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541452be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:51, skipping insertion in model container [2023-11-21 22:25:51,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:50" (2/3) ... [2023-11-21 22:25:51,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541452be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:51, skipping insertion in model container [2023-11-21 22:25:51,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:51" (3/3) ... [2023-11-21 22:25:51,348 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-array-ptr.i [2023-11-21 22:25:51,358 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:25:51,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:25:51,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-21 22:25:51,371 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:25:51,490 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 22:25:51,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 122 transitions, 251 flow [2023-11-21 22:25:51,661 INFO L124 PetriNetUnfolderBase]: 6/188 cut-off events. [2023-11-21 22:25:51,661 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:25:51,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 188 events. 6/188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 372 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-11-21 22:25:51,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 122 transitions, 251 flow [2023-11-21 22:25:51,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 122 transitions, 251 flow [2023-11-21 22:25:51,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:25:51,699 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;@4119d096, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:25:51,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-21 22:25:51,726 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:25:51,727 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-11-21 22:25:51,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:51,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:51,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:51,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:25:51,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:51,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1948619337, now seen corresponding path program 1 times [2023-11-21 22:25:51,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:51,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992781643] [2023-11-21 22:25:51,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:51,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:52,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:52,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992781643] [2023-11-21 22:25:52,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992781643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:52,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:52,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:52,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758628450] [2023-11-21 22:25:52,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:52,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:52,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:52,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:53,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 122 [2023-11-21 22:25:53,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:53,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:53,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 122 [2023-11-21 22:25:53,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:53,516 INFO L124 PetriNetUnfolderBase]: 81/497 cut-off events. [2023-11-21 22:25:53,516 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-11-21 22:25:53,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 497 events. 81/497 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2303 event pairs, 6 based on Foata normal form. 12/466 useless extension candidates. Maximal degree in co-relation 591. Up to 140 conditions per place. [2023-11-21 22:25:53,525 INFO L140 encePairwiseOnDemand]: 102/122 looper letters, 28 selfloop transitions, 24 changer transitions 1/149 dead transitions. [2023-11-21 22:25:53,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 149 transitions, 409 flow [2023-11-21 22:25:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:53,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2023-11-21 22:25:53,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8756830601092896 [2023-11-21 22:25:53,545 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 641 transitions. [2023-11-21 22:25:53,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 641 transitions. [2023-11-21 22:25:53,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:53,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 641 transitions. [2023-11-21 22:25:53,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:53,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:53,566 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:53,568 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 251 flow. Second operand 6 states and 641 transitions. [2023-11-21 22:25:53,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 149 transitions, 409 flow [2023-11-21 22:25:53,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 149 transitions, 409 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:53,578 INFO L231 Difference]: Finished difference. Result has 131 places, 142 transitions, 421 flow [2023-11-21 22:25:53,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=131, PETRI_TRANSITIONS=142} [2023-11-21 22:25:53,584 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 10 predicate places. [2023-11-21 22:25:53,585 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 142 transitions, 421 flow [2023-11-21 22:25:53,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:53,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:53,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:53,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:25:53,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:25:53,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:53,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1544078002, now seen corresponding path program 1 times [2023-11-21 22:25:53,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:53,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029968195] [2023-11-21 22:25:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:53,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:53,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:53,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029968195] [2023-11-21 22:25:53,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029968195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:53,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:53,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185649277] [2023-11-21 22:25:53,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:53,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:25:53,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:53,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:25:53,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:25:53,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 122 [2023-11-21 22:25:53,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 142 transitions, 421 flow. Second operand has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:53,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:53,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 122 [2023-11-21 22:25:53,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:53,892 INFO L124 PetriNetUnfolderBase]: 59/485 cut-off events. [2023-11-21 22:25:53,892 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-21 22:25:53,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 485 events. 59/485 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2138 event pairs, 3 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 609. Up to 73 conditions per place. [2023-11-21 22:25:53,898 INFO L140 encePairwiseOnDemand]: 114/122 looper letters, 11 selfloop transitions, 6 changer transitions 1/147 dead transitions. [2023-11-21 22:25:53,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 147 transitions, 467 flow [2023-11-21 22:25:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 655 transitions. [2023-11-21 22:25:53,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.894808743169399 [2023-11-21 22:25:53,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 655 transitions. [2023-11-21 22:25:53,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 655 transitions. [2023-11-21 22:25:53,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:53,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 655 transitions. [2023-11-21 22:25:53,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:53,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:53,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:53,909 INFO L175 Difference]: Start difference. First operand has 131 places, 142 transitions, 421 flow. Second operand 6 states and 655 transitions. [2023-11-21 22:25:53,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 147 transitions, 467 flow [2023-11-21 22:25:53,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 147 transitions, 467 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:53,918 INFO L231 Difference]: Finished difference. Result has 139 places, 146 transitions, 463 flow [2023-11-21 22:25:53,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=139, PETRI_TRANSITIONS=146} [2023-11-21 22:25:53,919 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 18 predicate places. [2023-11-21 22:25:53,920 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 146 transitions, 463 flow [2023-11-21 22:25:53,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:53,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:53,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:53,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:25:53,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:25:53,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash -340307480, now seen corresponding path program 1 times [2023-11-21 22:25:53,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:53,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653283395] [2023-11-21 22:25:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:54,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653283395] [2023-11-21 22:25:54,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653283395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:54,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:54,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:54,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555519136] [2023-11-21 22:25:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:54,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:54,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:54,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:54,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2023-11-21 22:25:54,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 146 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:54,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:54,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2023-11-21 22:25:54,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:54,960 INFO L124 PetriNetUnfolderBase]: 207/965 cut-off events. [2023-11-21 22:25:54,960 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2023-11-21 22:25:54,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 965 events. 207/965 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6042 event pairs, 9 based on Foata normal form. 0/904 useless extension candidates. Maximal degree in co-relation 1815. Up to 294 conditions per place. [2023-11-21 22:25:54,970 INFO L140 encePairwiseOnDemand]: 99/122 looper letters, 51 selfloop transitions, 50 changer transitions 4/206 dead transitions. [2023-11-21 22:25:54,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 206 transitions, 900 flow [2023-11-21 22:25:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 616 transitions. [2023-11-21 22:25:54,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8415300546448088 [2023-11-21 22:25:54,974 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 616 transitions. [2023-11-21 22:25:54,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 616 transitions. [2023-11-21 22:25:54,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:54,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 616 transitions. [2023-11-21 22:25:54,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:54,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:54,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:54,981 INFO L175 Difference]: Start difference. First operand has 139 places, 146 transitions, 463 flow. Second operand 6 states and 616 transitions. [2023-11-21 22:25:54,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 206 transitions, 900 flow [2023-11-21 22:25:54,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 206 transitions, 898 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:25:54,995 INFO L231 Difference]: Finished difference. Result has 148 places, 192 transitions, 919 flow [2023-11-21 22:25:54,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=919, PETRI_PLACES=148, PETRI_TRANSITIONS=192} [2023-11-21 22:25:54,998 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 27 predicate places. [2023-11-21 22:25:54,998 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 192 transitions, 919 flow [2023-11-21 22:25:54,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:54,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:54,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:55,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:25:55,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:25:55,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash 108159104, now seen corresponding path program 1 times [2023-11-21 22:25:55,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:55,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394832520] [2023-11-21 22:25:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:55,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:55,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:55,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394832520] [2023-11-21 22:25:55,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394832520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:55,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:55,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:55,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062942281] [2023-11-21 22:25:55,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:55,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:55,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:55,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:55,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:55,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 122 [2023-11-21 22:25:55,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 192 transitions, 919 flow. Second operand has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:55,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:55,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 122 [2023-11-21 22:25:55,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:56,316 INFO L124 PetriNetUnfolderBase]: 584/1937 cut-off events. [2023-11-21 22:25:56,316 INFO L125 PetriNetUnfolderBase]: For 1463/1580 co-relation queries the response was YES. [2023-11-21 22:25:56,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5122 conditions, 1937 events. 584/1937 cut-off events. For 1463/1580 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 14350 event pairs, 96 based on Foata normal form. 20/1852 useless extension candidates. Maximal degree in co-relation 4880. Up to 1013 conditions per place. [2023-11-21 22:25:56,340 INFO L140 encePairwiseOnDemand]: 91/122 looper letters, 98 selfloop transitions, 123 changer transitions 3/314 dead transitions. [2023-11-21 22:25:56,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 314 transitions, 1919 flow [2023-11-21 22:25:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2023-11-21 22:25:56,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8756830601092896 [2023-11-21 22:25:56,343 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 641 transitions. [2023-11-21 22:25:56,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 641 transitions. [2023-11-21 22:25:56,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:56,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 641 transitions. [2023-11-21 22:25:56,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:56,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:56,351 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:56,351 INFO L175 Difference]: Start difference. First operand has 148 places, 192 transitions, 919 flow. Second operand 6 states and 641 transitions. [2023-11-21 22:25:56,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 314 transitions, 1919 flow [2023-11-21 22:25:56,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 314 transitions, 1907 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-21 22:25:56,378 INFO L231 Difference]: Finished difference. Result has 151 places, 311 transitions, 2033 flow [2023-11-21 22:25:56,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2033, PETRI_PLACES=151, PETRI_TRANSITIONS=311} [2023-11-21 22:25:56,381 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 30 predicate places. [2023-11-21 22:25:56,381 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 311 transitions, 2033 flow [2023-11-21 22:25:56,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:56,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:56,382 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:56,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:25:56,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:25:56,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:56,383 INFO L85 PathProgramCache]: Analyzing trace with hash 724220416, now seen corresponding path program 1 times [2023-11-21 22:25:56,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:56,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730636135] [2023-11-21 22:25:56,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:56,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:57,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:57,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730636135] [2023-11-21 22:25:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730636135] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:25:57,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920807216] [2023-11-21 22:25:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:57,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:57,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:57,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:25:57,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:25:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:57,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-21 22:25:57,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:57,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-21 22:25:57,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:25:57,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 22:25:57,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:25:57,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-21 22:25:57,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:57,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-21 22:25:57,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:25:57,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-21 22:25:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:57,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:04,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-21 22:26:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:04,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920807216] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:04,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:04,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2023-11-21 22:26:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441489956] [2023-11-21 22:26:04,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:04,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-21 22:26:04,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:04,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-21 22:26:04,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=865, Unknown=19, NotChecked=0, Total=992 [2023-11-21 22:26:05,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 122 [2023-11-21 22:26:05,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 311 transitions, 2033 flow. Second operand has 32 states, 32 states have (on average 49.78125) internal successors, (1593), 32 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:05,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:05,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 122 [2023-11-21 22:26:05,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:10,439 INFO L124 PetriNetUnfolderBase]: 1146/3016 cut-off events. [2023-11-21 22:26:10,439 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-11-21 22:26:10,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10406 conditions, 3016 events. 1146/3016 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 22076 event pairs, 67 based on Foata normal form. 39/3016 useless extension candidates. Maximal degree in co-relation 10124. Up to 993 conditions per place. [2023-11-21 22:26:10,471 INFO L140 encePairwiseOnDemand]: 87/122 looper letters, 390 selfloop transitions, 174 changer transitions 62/673 dead transitions. [2023-11-21 22:26:10,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 673 transitions, 5239 flow [2023-11-21 22:26:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-21 22:26:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-21 22:26:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1869 transitions. [2023-11-21 22:26:10,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49418297197250133 [2023-11-21 22:26:10,483 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1869 transitions. [2023-11-21 22:26:10,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1869 transitions. [2023-11-21 22:26:10,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:10,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1869 transitions. [2023-11-21 22:26:10,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 60.29032258064516) internal successors, (1869), 31 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:10,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 122.0) internal successors, (3904), 32 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:10,500 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 122.0) internal successors, (3904), 32 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:10,501 INFO L175 Difference]: Start difference. First operand has 151 places, 311 transitions, 2033 flow. Second operand 31 states and 1869 transitions. [2023-11-21 22:26:10,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 673 transitions, 5239 flow [2023-11-21 22:26:10,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 673 transitions, 5149 flow, removed 45 selfloop flow, removed 0 redundant places. [2023-11-21 22:26:10,569 INFO L231 Difference]: Finished difference. Result has 196 places, 384 transitions, 3189 flow [2023-11-21 22:26:10,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3189, PETRI_PLACES=196, PETRI_TRANSITIONS=384} [2023-11-21 22:26:10,572 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 75 predicate places. [2023-11-21 22:26:10,572 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 384 transitions, 3189 flow [2023-11-21 22:26:10,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 49.78125) internal successors, (1593), 32 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:10,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:10,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:10,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:10,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:10,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:26:10,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash 161737023, now seen corresponding path program 1 times [2023-11-21 22:26:10,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:10,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070580924] [2023-11-21 22:26:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:10,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:11,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070580924] [2023-11-21 22:26:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070580924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008214021] [2023-11-21 22:26:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:11,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:11,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:11,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:11,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:26:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:11,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 22:26:11,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:11,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-21 22:26:11,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:26:11,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 22:26:11,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:11,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-21 22:26:12,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:12,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-21 22:26:12,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:26:12,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2023-11-21 22:26:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:12,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:12,845 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (= (select (select (store |c_#race| v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 1)) 0) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21))) (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21) (= (select (select (store |c_#race| v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) |c_ULTIMATE.start_main_~#datas~0#1.offset|) 0))) (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21) (= (select (select (store |c_#race| v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 3)) 0))) (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21) (= (select (select (store |c_#race| v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 2)) 0)))) is different from false [2023-11-21 22:26:12,898 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (= (select (select (store .cse0 v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) .cse1) 0) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21))) (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (= (select (select (store .cse0 v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 1)) 0) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21))) (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (= (select (select (store .cse0 v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 2)) 0) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21))) (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (= (select (select (store .cse0 v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) |c_ULTIMATE.start_main_~#datas~0#1.offset|) 0) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21)))))) is different from false [2023-11-21 22:26:12,950 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 2)) (.cse1 (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base|) .cse2 0) .cse1 0)))) (and (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21) (= (select (select (store .cse0 v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) |c_ULTIMATE.start_main_~#datas~0#1.offset|) 0))) (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (= (select (select (store .cse0 v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 1)) 0) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21))) (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21) (= (select (select (store .cse0 v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) .cse1) 0))) (forall ((v_ArrVal_289 (Array Int Int)) (v_threadThread1of1ForFork0_~p~0.base_21 Int)) (or (= 0 (select (select (store .cse0 v_threadThread1of1ForFork0_~p~0.base_21 v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) .cse2)) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~p~0.base_21)))))) is different from false [2023-11-21 22:26:17,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:17,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 51 [2023-11-21 22:26:17,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:17,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 36 [2023-11-21 22:26:17,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-21 22:26:17,213 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-21 22:26:17,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 1 [2023-11-21 22:26:17,222 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-21 22:26:17,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-21 22:26:17,230 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-21 22:26:17,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-21 22:26:17,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-21 22:26:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-21 22:26:17,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008214021] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:17,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:17,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2023-11-21 22:26:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648433439] [2023-11-21 22:26:17,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:17,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-21 22:26:17,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:17,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-21 22:26:17,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=903, Unknown=29, NotChecked=192, Total=1260 [2023-11-21 22:26:17,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 122 [2023-11-21 22:26:17,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 384 transitions, 3189 flow. Second operand has 36 states, 36 states have (on average 51.52777777777778) internal successors, (1855), 36 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:17,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:17,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 122 [2023-11-21 22:26:17,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:20,653 INFO L124 PetriNetUnfolderBase]: 931/2633 cut-off events. [2023-11-21 22:26:20,654 INFO L125 PetriNetUnfolderBase]: For 8987/8988 co-relation queries the response was YES. [2023-11-21 22:26:20,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11138 conditions, 2633 events. 931/2633 cut-off events. For 8987/8988 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 19126 event pairs, 159 based on Foata normal form. 25/2606 useless extension candidates. Maximal degree in co-relation 10824. Up to 1247 conditions per place. [2023-11-21 22:26:20,689 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 364 selfloop transitions, 31 changer transitions 44/491 dead transitions. [2023-11-21 22:26:20,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 491 transitions, 4645 flow [2023-11-21 22:26:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 22:26:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-21 22:26:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1071 transitions. [2023-11-21 22:26:20,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48770491803278687 [2023-11-21 22:26:20,695 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1071 transitions. [2023-11-21 22:26:20,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1071 transitions. [2023-11-21 22:26:20,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:20,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1071 transitions. [2023-11-21 22:26:20,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.5) internal successors, (1071), 18 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:20,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 122.0) internal successors, (2318), 19 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:20,710 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 122.0) internal successors, (2318), 19 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:20,710 INFO L175 Difference]: Start difference. First operand has 196 places, 384 transitions, 3189 flow. Second operand 18 states and 1071 transitions. [2023-11-21 22:26:20,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 491 transitions, 4645 flow [2023-11-21 22:26:20,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 491 transitions, 4589 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-11-21 22:26:20,794 INFO L231 Difference]: Finished difference. Result has 200 places, 352 transitions, 2847 flow [2023-11-21 22:26:20,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2847, PETRI_PLACES=200, PETRI_TRANSITIONS=352} [2023-11-21 22:26:20,798 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 79 predicate places. [2023-11-21 22:26:20,804 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 352 transitions, 2847 flow [2023-11-21 22:26:20,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 51.52777777777778) internal successors, (1855), 36 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:20,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:20,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:20,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:21,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 22:26:21,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:26:21,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:21,029 INFO L85 PathProgramCache]: Analyzing trace with hash 946631182, now seen corresponding path program 1 times [2023-11-21 22:26:21,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:21,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265716777] [2023-11-21 22:26:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:21,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:26:21,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:21,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265716777] [2023-11-21 22:26:21,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265716777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:21,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:21,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:21,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769347039] [2023-11-21 22:26:21,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:21,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:21,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:21,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:21,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:21,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 122 [2023-11-21 22:26:21,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 352 transitions, 2847 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:21,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:21,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 122 [2023-11-21 22:26:21,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:22,331 INFO L124 PetriNetUnfolderBase]: 503/1826 cut-off events. [2023-11-21 22:26:22,332 INFO L125 PetriNetUnfolderBase]: For 6039/6084 co-relation queries the response was YES. [2023-11-21 22:26:22,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7071 conditions, 1826 events. 503/1826 cut-off events. For 6039/6084 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13860 event pairs, 42 based on Foata normal form. 3/1808 useless extension candidates. Maximal degree in co-relation 6907. Up to 454 conditions per place. [2023-11-21 22:26:22,354 INFO L140 encePairwiseOnDemand]: 111/122 looper letters, 109 selfloop transitions, 37 changer transitions 15/392 dead transitions. [2023-11-21 22:26:22,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 392 transitions, 3589 flow [2023-11-21 22:26:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:26:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 642 transitions. [2023-11-21 22:26:22,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8770491803278688 [2023-11-21 22:26:22,357 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 642 transitions. [2023-11-21 22:26:22,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 642 transitions. [2023-11-21 22:26:22,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:22,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 642 transitions. [2023-11-21 22:26:22,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:22,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:22,363 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:22,363 INFO L175 Difference]: Start difference. First operand has 200 places, 352 transitions, 2847 flow. Second operand 6 states and 642 transitions. [2023-11-21 22:26:22,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 392 transitions, 3589 flow [2023-11-21 22:26:22,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 392 transitions, 3510 flow, removed 10 selfloop flow, removed 17 redundant places. [2023-11-21 22:26:22,427 INFO L231 Difference]: Finished difference. Result has 192 places, 377 transitions, 3280 flow [2023-11-21 22:26:22,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3280, PETRI_PLACES=192, PETRI_TRANSITIONS=377} [2023-11-21 22:26:22,428 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 71 predicate places. [2023-11-21 22:26:22,429 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 377 transitions, 3280 flow [2023-11-21 22:26:22,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:22,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:22,429 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:22,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:26:22,430 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:26:22,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:22,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2097273391, now seen corresponding path program 1 times [2023-11-21 22:26:22,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:22,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748015809] [2023-11-21 22:26:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:22,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:22,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:22,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:26:22,556 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:26:22,557 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-21 22:26:22,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-21 22:26:22,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-21 22:26:22,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-21 22:26:22,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-21 22:26:22,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-21 22:26:22,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-21 22:26:22,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-21 22:26:22,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-21 22:26:22,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:26:22,563 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:22,566 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:26:22,566 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:26:22,600 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:26:22,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 140 transitions, 296 flow [2023-11-21 22:26:22,644 INFO L124 PetriNetUnfolderBase]: 11/335 cut-off events. [2023-11-21 22:26:22,644 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:26:22,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 335 events. 11/335 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 762 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 190. Up to 8 conditions per place. [2023-11-21 22:26:22,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 140 transitions, 296 flow [2023-11-21 22:26:22,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 140 transitions, 296 flow [2023-11-21 22:26:22,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:26:22,652 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;@4119d096, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:26:22,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-21 22:26:22,656 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:26:22,656 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-11-21 22:26:22,656 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:26:22,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:22,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:22,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-21 22:26:22,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:22,657 INFO L85 PathProgramCache]: Analyzing trace with hash -709281591, now seen corresponding path program 1 times [2023-11-21 22:26:22,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:22,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974208485] [2023-11-21 22:26:22,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:22,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:22,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:22,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974208485] [2023-11-21 22:26:22,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974208485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:22,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:22,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:22,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374624248] [2023-11-21 22:26:22,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:22,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:22,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:22,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:22,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:23,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 140 [2023-11-21 22:26:23,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 140 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:23,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:23,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 140 [2023-11-21 22:26:23,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:23,844 INFO L124 PetriNetUnfolderBase]: 1139/4013 cut-off events. [2023-11-21 22:26:23,844 INFO L125 PetriNetUnfolderBase]: For 95/183 co-relation queries the response was YES. [2023-11-21 22:26:23,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6043 conditions, 4013 events. 1139/4013 cut-off events. For 95/183 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 31826 event pairs, 192 based on Foata normal form. 74/3754 useless extension candidates. Maximal degree in co-relation 2969. Up to 1538 conditions per place. [2023-11-21 22:26:23,885 INFO L140 encePairwiseOnDemand]: 116/140 looper letters, 36 selfloop transitions, 43 changer transitions 1/188 dead transitions. [2023-11-21 22:26:23,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 188 transitions, 558 flow [2023-11-21 22:26:23,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:26:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2023-11-21 22:26:23,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2023-11-21 22:26:23,891 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2023-11-21 22:26:23,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2023-11-21 22:26:23,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:23,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2023-11-21 22:26:23,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:23,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:23,897 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:23,897 INFO L175 Difference]: Start difference. First operand has 140 places, 140 transitions, 296 flow. Second operand 6 states and 740 transitions. [2023-11-21 22:26:23,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 188 transitions, 558 flow [2023-11-21 22:26:23,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 188 transitions, 558 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:26:23,902 INFO L231 Difference]: Finished difference. Result has 150 places, 179 transitions, 588 flow [2023-11-21 22:26:23,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=150, PETRI_TRANSITIONS=179} [2023-11-21 22:26:23,904 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 10 predicate places. [2023-11-21 22:26:23,904 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 179 transitions, 588 flow [2023-11-21 22:26:23,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:23,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:23,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:23,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:26:23,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-21 22:26:23,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2034740030, now seen corresponding path program 1 times [2023-11-21 22:26:23,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:23,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543299241] [2023-11-21 22:26:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:23,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:23,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:23,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543299241] [2023-11-21 22:26:23,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543299241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:23,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:23,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:23,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774971436] [2023-11-21 22:26:23,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:23,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:26:23,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:23,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:26:23,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:26:24,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 140 [2023-11-21 22:26:24,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 179 transitions, 588 flow. Second operand has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:24,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:24,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 140 [2023-11-21 22:26:24,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:24,643 INFO L124 PetriNetUnfolderBase]: 890/3527 cut-off events. [2023-11-21 22:26:24,643 INFO L125 PetriNetUnfolderBase]: For 563/567 co-relation queries the response was YES. [2023-11-21 22:26:24,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 3527 events. 890/3527 cut-off events. For 563/567 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 28437 event pairs, 150 based on Foata normal form. 1/3305 useless extension candidates. Maximal degree in co-relation 3349. Up to 983 conditions per place. [2023-11-21 22:26:24,672 INFO L140 encePairwiseOnDemand]: 132/140 looper letters, 14 selfloop transitions, 6 changer transitions 1/185 dead transitions. [2023-11-21 22:26:24,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 185 transitions, 642 flow [2023-11-21 22:26:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:26:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2023-11-21 22:26:24,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8976190476190476 [2023-11-21 22:26:24,676 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2023-11-21 22:26:24,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2023-11-21 22:26:24,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:24,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2023-11-21 22:26:24,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:24,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:24,683 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:24,683 INFO L175 Difference]: Start difference. First operand has 150 places, 179 transitions, 588 flow. Second operand 6 states and 754 transitions. [2023-11-21 22:26:24,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 185 transitions, 642 flow [2023-11-21 22:26:24,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 185 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:26:24,692 INFO L231 Difference]: Finished difference. Result has 158 places, 184 transitions, 634 flow [2023-11-21 22:26:24,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=158, PETRI_TRANSITIONS=184} [2023-11-21 22:26:24,693 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 18 predicate places. [2023-11-21 22:26:24,694 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 184 transitions, 634 flow [2023-11-21 22:26:24,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:24,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:24,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:24,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:26:24,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-21 22:26:24,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1985313640, now seen corresponding path program 1 times [2023-11-21 22:26:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:24,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941101625] [2023-11-21 22:26:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:24,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:24,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941101625] [2023-11-21 22:26:24,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941101625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:24,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:24,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:24,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423360087] [2023-11-21 22:26:24,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:24,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:24,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:24,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:25,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 140 [2023-11-21 22:26:25,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 184 transitions, 634 flow. Second operand has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:25,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:25,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 140 [2023-11-21 22:26:25,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:26,856 INFO L124 PetriNetUnfolderBase]: 3173/8714 cut-off events. [2023-11-21 22:26:26,856 INFO L125 PetriNetUnfolderBase]: For 4364/4375 co-relation queries the response was YES. [2023-11-21 22:26:26,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19459 conditions, 8714 events. 3173/8714 cut-off events. For 4364/4375 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 76220 event pairs, 410 based on Foata normal form. 7/8209 useless extension candidates. Maximal degree in co-relation 19325. Up to 3775 conditions per place. [2023-11-21 22:26:26,946 INFO L140 encePairwiseOnDemand]: 113/140 looper letters, 78 selfloop transitions, 104 changer transitions 4/300 dead transitions. [2023-11-21 22:26:26,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 300 transitions, 1529 flow [2023-11-21 22:26:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:26:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 715 transitions. [2023-11-21 22:26:26,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2023-11-21 22:26:26,950 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 715 transitions. [2023-11-21 22:26:26,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 715 transitions. [2023-11-21 22:26:26,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:26,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 715 transitions. [2023-11-21 22:26:26,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:26,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:26,956 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:26,956 INFO L175 Difference]: Start difference. First operand has 158 places, 184 transitions, 634 flow. Second operand 6 states and 715 transitions. [2023-11-21 22:26:26,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 300 transitions, 1529 flow [2023-11-21 22:26:26,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 300 transitions, 1527 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:26:26,974 INFO L231 Difference]: Finished difference. Result has 167 places, 284 transitions, 1638 flow [2023-11-21 22:26:26,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1638, PETRI_PLACES=167, PETRI_TRANSITIONS=284} [2023-11-21 22:26:26,976 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 27 predicate places. [2023-11-21 22:26:26,976 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 284 transitions, 1638 flow [2023-11-21 22:26:26,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:26,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:26,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:26,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:26:26,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-21 22:26:26,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:26,978 INFO L85 PathProgramCache]: Analyzing trace with hash 36319612, now seen corresponding path program 1 times [2023-11-21 22:26:26,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:26,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958195583] [2023-11-21 22:26:26,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:26,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:27,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958195583] [2023-11-21 22:26:27,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958195583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:27,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:27,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:27,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129941260] [2023-11-21 22:26:27,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:27,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:27,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:27,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:27,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 140 [2023-11-21 22:26:27,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 284 transitions, 1638 flow. Second operand has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:27,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:27,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 140 [2023-11-21 22:26:27,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:31,522 INFO L124 PetriNetUnfolderBase]: 8581/20103 cut-off events. [2023-11-21 22:26:31,522 INFO L125 PetriNetUnfolderBase]: For 22414/24809 co-relation queries the response was YES. [2023-11-21 22:26:31,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58947 conditions, 20103 events. 8581/20103 cut-off events. For 22414/24809 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 190219 event pairs, 1828 based on Foata normal form. 70/19089 useless extension candidates. Maximal degree in co-relation 20664. Up to 11835 conditions per place. [2023-11-21 22:26:31,722 INFO L140 encePairwiseOnDemand]: 105/140 looper letters, 173 selfloop transitions, 249 changer transitions 0/525 dead transitions. [2023-11-21 22:26:31,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 525 transitions, 3950 flow [2023-11-21 22:26:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:26:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 743 transitions. [2023-11-21 22:26:31,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2023-11-21 22:26:31,726 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 743 transitions. [2023-11-21 22:26:31,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 743 transitions. [2023-11-21 22:26:31,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:31,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 743 transitions. [2023-11-21 22:26:31,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.83333333333333) internal successors, (743), 6 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) [2023-11-21 22:26:31,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:31,734 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:31,734 INFO L175 Difference]: Start difference. First operand has 167 places, 284 transitions, 1638 flow. Second operand 6 states and 743 transitions. [2023-11-21 22:26:31,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 525 transitions, 3950 flow [2023-11-21 22:26:31,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 525 transitions, 3940 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-21 22:26:31,797 INFO L231 Difference]: Finished difference. Result has 171 places, 517 transitions, 4284 flow [2023-11-21 22:26:31,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4284, PETRI_PLACES=171, PETRI_TRANSITIONS=517} [2023-11-21 22:26:31,798 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 31 predicate places. [2023-11-21 22:26:31,798 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 517 transitions, 4284 flow [2023-11-21 22:26:31,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:31,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:31,799 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:31,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:26:31,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-21 22:26:31,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash -234940548, now seen corresponding path program 1 times [2023-11-21 22:26:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:31,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198579035] [2023-11-21 22:26:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:31,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:32,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:32,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198579035] [2023-11-21 22:26:32,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198579035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:32,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655026377] [2023-11-21 22:26:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:32,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:32,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:32,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:32,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a04b03c-9ba6-45d6-921f-fd05fac21246/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:26:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:32,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 22:26:32,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:32,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-21 22:26:32,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:26:32,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 22:26:32,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:32,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-21 22:26:32,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:26:32,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-21 22:26:32,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:26:32,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-21 22:26:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:33,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:33,039 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_577 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base| v_ArrVal_577) c_threadThread1of2ForFork0_~p~0.base) (+ 2 c_threadThread1of2ForFork0_~p~0.offset)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_577 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base| v_ArrVal_577) c_threadThread1of2ForFork0_~p~0.base) c_threadThread1of2ForFork0_~p~0.offset))) (forall ((v_ArrVal_577 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base| v_ArrVal_577) c_threadThread1of2ForFork0_~p~0.base) (+ c_threadThread1of2ForFork0_~p~0.offset 1))))) is different from false [2023-11-21 22:26:33,055 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 2 c_threadThread1of2ForFork0_~p~0.offset))) (let ((.cse0 (store |c_#race| c_threadThread1of2ForFork0_~p~0.base (store (select |c_#race| c_threadThread1of2ForFork0_~p~0.base) .cse1 |c_threadThread1of2ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_577 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#datas~0#1.base| v_ArrVal_577) c_threadThread1of2ForFork0_~p~0.base) c_threadThread1of2ForFork0_~p~0.offset) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_577 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#datas~0#1.base| v_ArrVal_577) c_threadThread1of2ForFork0_~p~0.base) .cse1))) (forall ((v_ArrVal_577 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#datas~0#1.base| v_ArrVal_577) c_threadThread1of2ForFork0_~p~0.base) (+ c_threadThread1of2ForFork0_~p~0.offset 1))))))) is different from false [2023-11-21 22:26:35,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-21 22:26:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-21 22:26:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655026377] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:35,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:35,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2023-11-21 22:26:35,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960815971] [2023-11-21 22:26:35,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:35,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-21 22:26:35,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-21 22:26:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=718, Unknown=2, NotChecked=110, Total=930 [2023-11-21 22:26:35,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 140 [2023-11-21 22:26:35,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 517 transitions, 4284 flow. Second operand has 31 states, 31 states have (on average 62.806451612903224) internal successors, (1947), 31 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:35,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:35,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 140 [2023-11-21 22:26:35,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand