./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-in-array.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/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_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-in-array.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/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_78ec1953-94e4-4c58-99f7-d4fc439a72bf/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 0026ab1092a8a0465a20b39c2dea92fa9c4dc52098c477016ebc8544f5aaf0f0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:21:42,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:21:42,538 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:21:42,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:21:42,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:21:42,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:21:42,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:21:42,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:21:42,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:21:42,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:21:42,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:21:42,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:21:42,606 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:21:42,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:21:42,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:21:42,609 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:21:42,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:21:42,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:21:42,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:21:42,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:21:42,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:21:42,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:21:42,612 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:21:42,613 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:21:42,614 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:21:42,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:21:42,615 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:21:42,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:21:42,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:21:42,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:21:42,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:42,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:21:42,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:21:42,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:21:42,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:21:42,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:21:42,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:21:42,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:21:42,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:21:42,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:21:42,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:21:42,620 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_78ec1953-94e4-4c58-99f7-d4fc439a72bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0026ab1092a8a0465a20b39c2dea92fa9c4dc52098c477016ebc8544f5aaf0f0 [2023-11-21 22:21:42,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:21:42,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:21:42,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:21:42,955 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:21:42,955 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:21:42,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-in-array.i [2023-11-21 22:21:46,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:21:46,442 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:21:46,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/sv-benchmarks/c/pthread-race-challenges/per-thread-struct-in-array.i [2023-11-21 22:21:46,473 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/data/e4a971d12/24726c86f5a546c587739188c3c18cc8/FLAG63a13138e [2023-11-21 22:21:46,490 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/data/e4a971d12/24726c86f5a546c587739188c3c18cc8 [2023-11-21 22:21:46,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:21:46,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:21:46,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:46,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:21:46,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:21:46,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:46" (1/1) ... [2023-11-21 22:21:46,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b0c4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:46, skipping insertion in model container [2023-11-21 22:21:46,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:46" (1/1) ... [2023-11-21 22:21:46,587 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:21:46,840 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:21:47,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:47,134 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:21:47,168 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:21:47,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:47,303 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:47,312 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:21:47,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47 WrapperNode [2023-11-21 22:21:47,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:47,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:47,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:21:47,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:21:47,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,394 INFO L138 Inliner]: procedures = 266, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2023-11-21 22:21:47,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:47,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:21:47,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:21:47,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:21:47,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:21:47,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:21:47,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:21:47,439 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:21:47,440 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (1/1) ... [2023-11-21 22:21:47,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:47,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:47,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:21:47,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:21:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:21:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:21:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:21:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:21:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:21:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:21:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:21:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-21 22:21:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-21 22:21:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:21:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:21:47,524 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 22:21:47,673 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:21:47,675 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:21:47,990 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:21:48,003 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:21:48,003 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:21:48,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:48 BoogieIcfgContainer [2023-11-21 22:21:48,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:21:48,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:21:48,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:21:48,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:21:48,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:21:46" (1/3) ... [2023-11-21 22:21:48,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a82f3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:48, skipping insertion in model container [2023-11-21 22:21:48,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:47" (2/3) ... [2023-11-21 22:21:48,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a82f3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:48, skipping insertion in model container [2023-11-21 22:21:48,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:48" (3/3) ... [2023-11-21 22:21:48,016 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-struct-in-array.i [2023-11-21 22:21:48,026 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:21:48,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:21:48,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-21 22:21:48,038 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:21:48,126 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 22:21:48,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 122 transitions, 251 flow [2023-11-21 22:21:48,314 INFO L124 PetriNetUnfolderBase]: 6/188 cut-off events. [2023-11-21 22:21:48,316 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:21:48,323 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 382 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 22:21:48,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 122 transitions, 251 flow [2023-11-21 22:21:48,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 122 transitions, 251 flow [2023-11-21 22:21:48,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:21:48,360 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;@74cf2567, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:21:48,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-21 22:21:48,387 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:21:48,387 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-11-21 22:21:48,387 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:21:48,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:48,389 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 22:21:48,389 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 22:21:48,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:48,396 INFO L85 PathProgramCache]: Analyzing trace with hash 578939384, now seen corresponding path program 1 times [2023-11-21 22:21:48,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:48,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275575674] [2023-11-21 22:21:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:48,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:49,436 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 22:21:49,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:49,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275575674] [2023-11-21 22:21:49,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275575674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:49,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:49,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:49,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858229592] [2023-11-21 22:21:49,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:49,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:21:49,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:21:49,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:21:49,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 122 [2023-11-21 22:21:49,972 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 22:21:49,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:49,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 122 [2023-11-21 22:21:49,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:50,164 INFO L124 PetriNetUnfolderBase]: 81/497 cut-off events. [2023-11-21 22:21:50,164 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-11-21 22:21:50,166 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 2288 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 22:21:50,172 INFO L140 encePairwiseOnDemand]: 102/122 looper letters, 28 selfloop transitions, 24 changer transitions 1/149 dead transitions. [2023-11-21 22:21:50,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 149 transitions, 409 flow [2023-11-21 22:21:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:21:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2023-11-21 22:21:50,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8756830601092896 [2023-11-21 22:21:50,192 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 641 transitions. [2023-11-21 22:21:50,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 641 transitions. [2023-11-21 22:21:50,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:50,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 641 transitions. [2023-11-21 22:21:50,207 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 22:21:50,219 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 22:21:50,220 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 22:21:50,223 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 251 flow. Second operand 6 states and 641 transitions. [2023-11-21 22:21:50,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 149 transitions, 409 flow [2023-11-21 22:21:50,232 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 22:21:50,238 INFO L231 Difference]: Finished difference. Result has 131 places, 142 transitions, 421 flow [2023-11-21 22:21:50,241 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 22:21:50,247 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 10 predicate places. [2023-11-21 22:21:50,248 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 142 transitions, 421 flow [2023-11-21 22:21:50,249 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 22:21:50,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:50,250 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 22:21:50,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:21:50,250 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 22:21:50,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2012313278, now seen corresponding path program 1 times [2023-11-21 22:21:50,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:50,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030749113] [2023-11-21 22:21:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:50,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:50,364 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 22:21:50,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:50,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030749113] [2023-11-21 22:21:50,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030749113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:50,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:50,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:50,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814521912] [2023-11-21 22:21:50,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:50,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:50,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:50,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:50,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 122 [2023-11-21 22:21:50,444 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 22:21:50,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:50,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 122 [2023-11-21 22:21:50,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:50,565 INFO L124 PetriNetUnfolderBase]: 59/485 cut-off events. [2023-11-21 22:21:50,565 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-21 22:21:50,568 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 2126 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 22:21:50,570 INFO L140 encePairwiseOnDemand]: 114/122 looper letters, 11 selfloop transitions, 6 changer transitions 1/147 dead transitions. [2023-11-21 22:21:50,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 147 transitions, 467 flow [2023-11-21 22:21:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:21:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 655 transitions. [2023-11-21 22:21:50,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.894808743169399 [2023-11-21 22:21:50,574 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 655 transitions. [2023-11-21 22:21:50,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 655 transitions. [2023-11-21 22:21:50,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:50,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 655 transitions. [2023-11-21 22:21:50,577 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 22:21:50,579 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 22:21:50,580 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 22:21:50,580 INFO L175 Difference]: Start difference. First operand has 131 places, 142 transitions, 421 flow. Second operand 6 states and 655 transitions. [2023-11-21 22:21:50,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 147 transitions, 467 flow [2023-11-21 22:21:50,586 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 22:21:50,590 INFO L231 Difference]: Finished difference. Result has 139 places, 146 transitions, 463 flow [2023-11-21 22:21:50,590 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 22:21:50,591 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 18 predicate places. [2023-11-21 22:21:50,591 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 146 transitions, 463 flow [2023-11-21 22:21:50,592 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 22:21:50,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:50,592 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 22:21:50,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:21:50,593 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 22:21:50,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1180280619, now seen corresponding path program 1 times [2023-11-21 22:21:50,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:50,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329735046] [2023-11-21 22:21:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:50,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:50,962 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 22:21:50,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:50,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329735046] [2023-11-21 22:21:50,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329735046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:50,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:50,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:50,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283465584] [2023-11-21 22:21:50,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:50,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:21:50,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:50,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:21:50,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:21:51,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2023-11-21 22:21:51,313 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 22:21:51,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:51,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2023-11-21 22:21:51,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:51,596 INFO L124 PetriNetUnfolderBase]: 207/964 cut-off events. [2023-11-21 22:21:51,596 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2023-11-21 22:21:51,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1947 conditions, 964 events. 207/964 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6054 event pairs, 9 based on Foata normal form. 0/903 useless extension candidates. Maximal degree in co-relation 1814. Up to 294 conditions per place. [2023-11-21 22:21:51,608 INFO L140 encePairwiseOnDemand]: 99/122 looper letters, 51 selfloop transitions, 50 changer transitions 4/206 dead transitions. [2023-11-21 22:21:51,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 206 transitions, 900 flow [2023-11-21 22:21:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:21:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 616 transitions. [2023-11-21 22:21:51,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8415300546448088 [2023-11-21 22:21:51,612 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 616 transitions. [2023-11-21 22:21:51,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 616 transitions. [2023-11-21 22:21:51,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:51,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 616 transitions. [2023-11-21 22:21:51,615 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 22:21:51,617 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 22:21:51,619 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 22:21:51,619 INFO L175 Difference]: Start difference. First operand has 139 places, 146 transitions, 463 flow. Second operand 6 states and 616 transitions. [2023-11-21 22:21:51,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 206 transitions, 900 flow [2023-11-21 22:21:51,628 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 22:21:51,634 INFO L231 Difference]: Finished difference. Result has 148 places, 192 transitions, 919 flow [2023-11-21 22:21:51,635 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 22:21:51,636 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 27 predicate places. [2023-11-21 22:21:51,637 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 192 transitions, 919 flow [2023-11-21 22:21:51,637 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 22:21:51,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:51,638 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 22:21:51,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:21:51,639 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 22:21:51,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:51,640 INFO L85 PathProgramCache]: Analyzing trace with hash -396544275, now seen corresponding path program 1 times [2023-11-21 22:21:51,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:51,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939401316] [2023-11-21 22:21:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:51,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:52,187 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 22:21:52,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:52,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939401316] [2023-11-21 22:21:52,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939401316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:52,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:52,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:52,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225066580] [2023-11-21 22:21:52,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:52,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:21:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:52,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:21:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:21:52,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 122 [2023-11-21 22:21:52,348 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 22:21:52,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:52,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 122 [2023-11-21 22:21:52,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:52,960 INFO L124 PetriNetUnfolderBase]: 589/1951 cut-off events. [2023-11-21 22:21:52,960 INFO L125 PetriNetUnfolderBase]: For 1487/1604 co-relation queries the response was YES. [2023-11-21 22:21:52,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5160 conditions, 1951 events. 589/1951 cut-off events. For 1487/1604 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 14467 event pairs, 97 based on Foata normal form. 20/1866 useless extension candidates. Maximal degree in co-relation 4918. Up to 1020 conditions per place. [2023-11-21 22:21:52,981 INFO L140 encePairwiseOnDemand]: 91/122 looper letters, 98 selfloop transitions, 120 changer transitions 6/314 dead transitions. [2023-11-21 22:21:52,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 314 transitions, 1919 flow [2023-11-21 22:21:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:21:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2023-11-21 22:21:52,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8756830601092896 [2023-11-21 22:21:52,985 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 641 transitions. [2023-11-21 22:21:52,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 641 transitions. [2023-11-21 22:21:52,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:52,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 641 transitions. [2023-11-21 22:21:52,989 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 22:21:52,991 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 22:21:52,992 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 22:21:52,992 INFO L175 Difference]: Start difference. First operand has 148 places, 192 transitions, 919 flow. Second operand 6 states and 641 transitions. [2023-11-21 22:21:52,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 314 transitions, 1919 flow [2023-11-21 22:21:53,011 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 22:21:53,019 INFO L231 Difference]: Finished difference. Result has 151 places, 308 transitions, 2003 flow [2023-11-21 22:21:53,020 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=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2003, PETRI_PLACES=151, PETRI_TRANSITIONS=308} [2023-11-21 22:21:53,022 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 30 predicate places. [2023-11-21 22:21:53,022 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 308 transitions, 2003 flow [2023-11-21 22:21:53,022 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 22:21:53,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:53,023 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 22:21:53,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:21:53,024 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 22:21:53,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1434386381, now seen corresponding path program 1 times [2023-11-21 22:21:53,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:53,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241314116] [2023-11-21 22:21:53,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:53,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:53,869 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 22:21:53,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:53,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241314116] [2023-11-21 22:21:53,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241314116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:53,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635554361] [2023-11-21 22:21:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:53,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:53,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:53,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:53,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:21:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:54,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 22:21:54,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:54,182 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 22:21:54,337 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 22:21:54,383 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 22:21:54,468 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:21:54,468 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 22:21:54,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:21:54,539 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 22:21:54,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:21:54,752 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 22:21:54,764 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 22:21:54,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:54,801 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) c_threadThread1of1ForFork0_~t~0.offset) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) (+ 2 c_threadThread1of1ForFork0_~t~0.offset)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) (+ c_threadThread1of1ForFork0_~t~0.offset 1)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_191 (Array Int Int))) (= |c_threadThread1of1ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) (+ 3 c_threadThread1of1ForFork0_~t~0.offset))))) is different from false [2023-11-21 22:21:54,993 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 3 c_threadThread1of1ForFork0_~t~0.offset))) (let ((.cse0 (store |c_#race| c_threadThread1of1ForFork0_~t~0.base (store (select |c_#race| c_threadThread1of1ForFork0_~t~0.base) .cse1 |c_threadThread1of1ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) .cse1) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) (+ c_threadThread1of1ForFork0_~t~0.offset 1)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) (+ 2 c_threadThread1of1ForFork0_~t~0.offset)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) c_threadThread1of1ForFork0_~t~0.offset) |c_threadThread1of1ForFork0_#t~nondet4|))))) is different from false [2023-11-21 22:21:55,030 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 2 c_threadThread1of1ForFork0_~t~0.offset)) (.cse2 (+ 3 c_threadThread1of1ForFork0_~t~0.offset))) (let ((.cse0 (store |c_#race| c_threadThread1of1ForFork0_~t~0.base (store (store (select |c_#race| c_threadThread1of1ForFork0_~t~0.base) .cse1 |c_threadThread1of1ForFork0_#t~nondet4|) .cse2 |c_threadThread1of1ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) .cse1) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) (+ c_threadThread1of1ForFork0_~t~0.offset 1)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_191 (Array Int Int))) (= |c_threadThread1of1ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) .cse2))) (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_191) c_threadThread1of1ForFork0_~t~0.base) c_threadThread1of1ForFork0_~t~0.offset) |c_threadThread1of1ForFork0_#t~nondet4|))))) is different from false [2023-11-21 22:21:57,265 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 22:21:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-21 22:21:57,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635554361] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:57,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:21:57,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2023-11-21 22:21:57,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448640139] [2023-11-21 22:21:57,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:57,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-21 22:21:57,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:57,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-21 22:21:57,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=763, Unknown=3, NotChecked=174, Total=1056 [2023-11-21 22:21:57,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 122 [2023-11-21 22:21:57,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 308 transitions, 2003 flow. Second operand has 33 states, 33 states have (on average 53.696969696969695) internal successors, (1772), 33 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states 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 22:21:57,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:57,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 122 [2023-11-21 22:21:57,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:01,745 INFO L124 PetriNetUnfolderBase]: 1026/2761 cut-off events. [2023-11-21 22:22:01,746 INFO L125 PetriNetUnfolderBase]: For 3660/3662 co-relation queries the response was YES. [2023-11-21 22:22:01,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9570 conditions, 2761 events. 1026/2761 cut-off events. For 3660/3662 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 19991 event pairs, 170 based on Foata normal form. 35/2756 useless extension candidates. Maximal degree in co-relation 9287. Up to 1260 conditions per place. [2023-11-21 22:22:01,779 INFO L140 encePairwiseOnDemand]: 88/122 looper letters, 373 selfloop transitions, 144 changer transitions 37/605 dead transitions. [2023-11-21 22:22:01,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 605 transitions, 4649 flow [2023-11-21 22:22:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-21 22:22:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-21 22:22:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1544 transitions. [2023-11-21 22:22:01,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5502494654312188 [2023-11-21 22:22:01,787 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1544 transitions. [2023-11-21 22:22:01,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1544 transitions. [2023-11-21 22:22:01,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:01,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1544 transitions. [2023-11-21 22:22:01,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 67.1304347826087) internal successors, (1544), 23 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states 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 22:22:01,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 122.0) internal successors, (2928), 24 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states 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 22:22:01,804 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 122.0) internal successors, (2928), 24 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states 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 22:22:01,805 INFO L175 Difference]: Start difference. First operand has 151 places, 308 transitions, 2003 flow. Second operand 23 states and 1544 transitions. [2023-11-21 22:22:01,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 605 transitions, 4649 flow [2023-11-21 22:22:01,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 605 transitions, 4559 flow, removed 45 selfloop flow, removed 0 redundant places. [2023-11-21 22:22:01,874 INFO L231 Difference]: Finished difference. Result has 182 places, 355 transitions, 2852 flow [2023-11-21 22:22:01,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2852, PETRI_PLACES=182, PETRI_TRANSITIONS=355} [2023-11-21 22:22:01,878 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 61 predicate places. [2023-11-21 22:22:01,878 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 355 transitions, 2852 flow [2023-11-21 22:22:01,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 53.696969696969695) internal successors, (1772), 33 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states 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 22:22:01,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:01,881 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 22:22:01,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 22:22:02,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:02,096 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 22:22:02,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1419136319, now seen corresponding path program 1 times [2023-11-21 22:22:02,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631525866] [2023-11-21 22:22:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:02,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:02,868 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 22:22:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631525866] [2023-11-21 22:22:02,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631525866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817467405] [2023-11-21 22:22:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:02,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:02,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:02,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:22:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:03,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 22:22:03,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:03,069 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 22:22:03,208 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 22:22:03,247 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 22:22:03,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:03,303 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 22:22:03,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:03,371 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 22:22:03,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:22:03,447 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 22:22:03,458 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 22:22:03,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:05,600 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 3 |c_ULTIMATE.start_main_~#ts~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_290 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_290) |c_ULTIMATE.start_main_~#ts~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#ts~0#1.offset|)) 0)) (forall ((v_ArrVal_290 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_290) |c_ULTIMATE.start_main_~#ts~0#1.base|) (+ |c_ULTIMATE.start_main_~#ts~0#1.offset| 1)) 0)) (forall ((v_ArrVal_290 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_290) |c_ULTIMATE.start_main_~#ts~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_290 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_290) |c_ULTIMATE.start_main_~#ts~0#1.base|) |c_ULTIMATE.start_main_~#ts~0#1.offset|) 0))))) is different from false [2023-11-21 22:22:05,622 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 2 |c_ULTIMATE.start_main_~#ts~0#1.offset|)) (.cse2 (+ 3 |c_ULTIMATE.start_main_~#ts~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base|) .cse1 0) .cse2 0)))) (and (forall ((v_ArrVal_290 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_290) |c_ULTIMATE.start_main_~#ts~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_290 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_290) |c_ULTIMATE.start_main_~#ts~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_290 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_290) |c_ULTIMATE.start_main_~#ts~0#1.base|) (+ |c_ULTIMATE.start_main_~#ts~0#1.offset| 1)) 0)) (forall ((v_ArrVal_290 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_290) |c_ULTIMATE.start_main_~#ts~0#1.base|) |c_ULTIMATE.start_main_~#ts~0#1.offset|) 0))))) is different from false [2023-11-21 22:22:11,778 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 22:22:11,842 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 22:22:11,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817467405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:11,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:11,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2023-11-21 22:22:11,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909698873] [2023-11-21 22:22:11,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:11,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-21 22:22:11,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:11,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-21 22:22:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=868, Unknown=12, NotChecked=122, Total=1122 [2023-11-21 22:22:12,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 122 [2023-11-21 22:22:12,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 355 transitions, 2852 flow. Second operand has 34 states, 34 states have (on average 51.588235294117645) internal successors, (1754), 34 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states 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 22:22:12,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:12,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 122 [2023-11-21 22:22:12,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:15,000 INFO L124 PetriNetUnfolderBase]: 952/2721 cut-off events. [2023-11-21 22:22:15,000 INFO L125 PetriNetUnfolderBase]: For 8578/8579 co-relation queries the response was YES. [2023-11-21 22:22:15,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11094 conditions, 2721 events. 952/2721 cut-off events. For 8578/8579 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 20064 event pairs, 108 based on Foata normal form. 25/2693 useless extension candidates. Maximal degree in co-relation 10789. Up to 1242 conditions per place. [2023-11-21 22:22:15,031 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 379 selfloop transitions, 31 changer transitions 30/492 dead transitions. [2023-11-21 22:22:15,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 492 transitions, 4659 flow [2023-11-21 22:22:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 22:22:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-21 22:22:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1071 transitions. [2023-11-21 22:22:15,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48770491803278687 [2023-11-21 22:22:15,037 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1071 transitions. [2023-11-21 22:22:15,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1071 transitions. [2023-11-21 22:22:15,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:15,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1071 transitions. [2023-11-21 22:22:15,041 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 22:22:15,046 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 22:22:15,047 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 22:22:15,048 INFO L175 Difference]: Start difference. First operand has 182 places, 355 transitions, 2852 flow. Second operand 18 states and 1071 transitions. [2023-11-21 22:22:15,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 492 transitions, 4659 flow [2023-11-21 22:22:15,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 492 transitions, 4605 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-11-21 22:22:15,137 INFO L231 Difference]: Finished difference. Result has 188 places, 351 transitions, 2797 flow [2023-11-21 22:22:15,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2797, PETRI_PLACES=188, PETRI_TRANSITIONS=351} [2023-11-21 22:22:15,139 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 67 predicate places. [2023-11-21 22:22:15,139 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 351 transitions, 2797 flow [2023-11-21 22:22:15,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 51.588235294117645) internal successors, (1754), 34 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states 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 22:22:15,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:15,141 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 22:22:15,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:15,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 22:22:15,358 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 22:22:15,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1234583565, now seen corresponding path program 1 times [2023-11-21 22:22:15,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678430476] [2023-11-21 22:22:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:15,875 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 22:22:15,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:15,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678430476] [2023-11-21 22:22:15,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678430476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:15,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:15,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:15,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188084701] [2023-11-21 22:22:15,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:15,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:15,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:16,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 122 [2023-11-21 22:22:16,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 351 transitions, 2797 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 22:22:16,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:16,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 122 [2023-11-21 22:22:16,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:16,815 INFO L124 PetriNetUnfolderBase]: 553/1943 cut-off events. [2023-11-21 22:22:16,815 INFO L125 PetriNetUnfolderBase]: For 6037/6087 co-relation queries the response was YES. [2023-11-21 22:22:16,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7402 conditions, 1943 events. 553/1943 cut-off events. For 6037/6087 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14824 event pairs, 45 based on Foata normal form. 5/1926 useless extension candidates. Maximal degree in co-relation 7243. Up to 490 conditions per place. [2023-11-21 22:22:16,840 INFO L140 encePairwiseOnDemand]: 111/122 looper letters, 105 selfloop transitions, 37 changer transitions 15/391 dead transitions. [2023-11-21 22:22:16,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 391 transitions, 3507 flow [2023-11-21 22:22:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 642 transitions. [2023-11-21 22:22:16,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8770491803278688 [2023-11-21 22:22:16,844 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 642 transitions. [2023-11-21 22:22:16,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 642 transitions. [2023-11-21 22:22:16,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:16,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 642 transitions. [2023-11-21 22:22:16,848 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 22:22:16,850 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 22:22:16,850 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 22:22:16,851 INFO L175 Difference]: Start difference. First operand has 188 places, 351 transitions, 2797 flow. Second operand 6 states and 642 transitions. [2023-11-21 22:22:16,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 391 transitions, 3507 flow [2023-11-21 22:22:16,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 391 transitions, 3469 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-21 22:22:16,922 INFO L231 Difference]: Finished difference. Result has 187 places, 376 transitions, 3247 flow [2023-11-21 22:22:16,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=2759, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3247, PETRI_PLACES=187, PETRI_TRANSITIONS=376} [2023-11-21 22:22:16,924 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 66 predicate places. [2023-11-21 22:22:16,925 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 376 transitions, 3247 flow [2023-11-21 22:22:16,925 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 22:22:16,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:16,926 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 22:22:16,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:22:16,926 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 22:22:16,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:16,932 INFO L85 PathProgramCache]: Analyzing trace with hash -767136527, now seen corresponding path program 1 times [2023-11-21 22:22:16,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:16,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549082297] [2023-11-21 22:22:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:16,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:22:17,017 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:22:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:22:17,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:22:17,078 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:22:17,080 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-21 22:22:17,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-21 22:22:17,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-21 22:22:17,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-21 22:22:17,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-21 22:22:17,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-21 22:22:17,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-21 22:22:17,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-21 22:22:17,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-21 22:22:17,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:22:17,085 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:17,089 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:22:17,089 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:22:17,126 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:22:17,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 140 transitions, 296 flow [2023-11-21 22:22:17,173 INFO L124 PetriNetUnfolderBase]: 11/335 cut-off events. [2023-11-21 22:22:17,173 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:22:17,174 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 764 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 22:22:17,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 140 transitions, 296 flow [2023-11-21 22:22:17,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 140 transitions, 296 flow [2023-11-21 22:22:17,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:22:17,180 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;@74cf2567, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:22:17,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-21 22:22:17,184 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:22:17,184 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-11-21 22:22:17,184 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:22:17,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:17,185 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 22:22:17,185 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 22:22:17,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:17,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2078961544, now seen corresponding path program 1 times [2023-11-21 22:22:17,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:17,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315316278] [2023-11-21 22:22:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:17,467 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 22:22:17,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:17,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315316278] [2023-11-21 22:22:17,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315316278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:17,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:17,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:17,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829545610] [2023-11-21 22:22:17,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:17,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:17,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:17,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:17,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:17,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 140 [2023-11-21 22:22:17,853 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 22:22:17,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:17,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 140 [2023-11-21 22:22:17,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:18,644 INFO L124 PetriNetUnfolderBase]: 1139/4013 cut-off events. [2023-11-21 22:22:18,644 INFO L125 PetriNetUnfolderBase]: For 112/200 co-relation queries the response was YES. [2023-11-21 22:22:18,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6043 conditions, 4013 events. 1139/4013 cut-off events. For 112/200 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 31909 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 22:22:18,678 INFO L140 encePairwiseOnDemand]: 116/140 looper letters, 36 selfloop transitions, 43 changer transitions 1/188 dead transitions. [2023-11-21 22:22:18,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 188 transitions, 558 flow [2023-11-21 22:22:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2023-11-21 22:22:18,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2023-11-21 22:22:18,682 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2023-11-21 22:22:18,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2023-11-21 22:22:18,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:18,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2023-11-21 22:22:18,686 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 22:22:18,689 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 22:22:18,690 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 22:22:18,690 INFO L175 Difference]: Start difference. First operand has 140 places, 140 transitions, 296 flow. Second operand 6 states and 740 transitions. [2023-11-21 22:22:18,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 188 transitions, 558 flow [2023-11-21 22:22:18,692 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 22:22:18,695 INFO L231 Difference]: Finished difference. Result has 150 places, 179 transitions, 588 flow [2023-11-21 22:22:18,695 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 22:22:18,697 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 10 predicate places. [2023-11-21 22:22:18,697 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 179 transitions, 588 flow [2023-11-21 22:22:18,698 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 22:22:18,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:18,698 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 22:22:18,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:22:18,699 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 22:22:18,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:18,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1521651250, now seen corresponding path program 1 times [2023-11-21 22:22:18,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:18,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694874709] [2023-11-21 22:22:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:18,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:18,770 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 22:22:18,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:18,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694874709] [2023-11-21 22:22:18,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694874709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:18,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:18,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:18,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047108664] [2023-11-21 22:22:18,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:18,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:22:18,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:18,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:22:18,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:22:18,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 140 [2023-11-21 22:22:18,863 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 22:22:18,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:18,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 140 [2023-11-21 22:22:18,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:19,554 INFO L124 PetriNetUnfolderBase]: 890/3527 cut-off events. [2023-11-21 22:22:19,554 INFO L125 PetriNetUnfolderBase]: For 563/567 co-relation queries the response was YES. [2023-11-21 22:22:19,570 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 28422 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 22:22:19,592 INFO L140 encePairwiseOnDemand]: 132/140 looper letters, 14 selfloop transitions, 6 changer transitions 1/185 dead transitions. [2023-11-21 22:22:19,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 185 transitions, 642 flow [2023-11-21 22:22:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2023-11-21 22:22:19,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8976190476190476 [2023-11-21 22:22:19,596 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2023-11-21 22:22:19,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2023-11-21 22:22:19,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:19,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2023-11-21 22:22:19,600 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 22:22:19,602 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 22:22:19,603 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 22:22:19,603 INFO L175 Difference]: Start difference. First operand has 150 places, 179 transitions, 588 flow. Second operand 6 states and 754 transitions. [2023-11-21 22:22:19,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 185 transitions, 642 flow [2023-11-21 22:22:19,610 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 22:22:19,613 INFO L231 Difference]: Finished difference. Result has 158 places, 184 transitions, 634 flow [2023-11-21 22:22:19,615 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 22:22:19,616 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 18 predicate places. [2023-11-21 22:22:19,616 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 184 transitions, 634 flow [2023-11-21 22:22:19,617 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 22:22:19,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:19,617 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 22:22:19,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:22:19,618 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 22:22:19,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:19,618 INFO L85 PathProgramCache]: Analyzing trace with hash -789065557, now seen corresponding path program 1 times [2023-11-21 22:22:19,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:19,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105890660] [2023-11-21 22:22:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:19,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:19,866 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 22:22:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:19,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105890660] [2023-11-21 22:22:19,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105890660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:19,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:19,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737694159] [2023-11-21 22:22:19,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:19,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:19,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:19,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:20,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 140 [2023-11-21 22:22:20,202 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 22:22:20,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:20,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 140 [2023-11-21 22:22:20,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:21,784 INFO L124 PetriNetUnfolderBase]: 3173/8712 cut-off events. [2023-11-21 22:22:21,784 INFO L125 PetriNetUnfolderBase]: For 4361/4372 co-relation queries the response was YES. [2023-11-21 22:22:21,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19457 conditions, 8712 events. 3173/8712 cut-off events. For 4361/4372 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 76112 event pairs, 410 based on Foata normal form. 7/8207 useless extension candidates. Maximal degree in co-relation 19323. Up to 3775 conditions per place. [2023-11-21 22:22:21,868 INFO L140 encePairwiseOnDemand]: 113/140 looper letters, 78 selfloop transitions, 104 changer transitions 4/300 dead transitions. [2023-11-21 22:22:21,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 300 transitions, 1529 flow [2023-11-21 22:22:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:21,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 715 transitions. [2023-11-21 22:22:21,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2023-11-21 22:22:21,872 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 715 transitions. [2023-11-21 22:22:21,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 715 transitions. [2023-11-21 22:22:21,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:21,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 715 transitions. [2023-11-21 22:22:21,877 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 22:22:21,882 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 22:22:21,883 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 22:22:21,883 INFO L175 Difference]: Start difference. First operand has 158 places, 184 transitions, 634 flow. Second operand 6 states and 715 transitions. [2023-11-21 22:22:21,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 300 transitions, 1529 flow [2023-11-21 22:22:21,898 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 22:22:21,903 INFO L231 Difference]: Finished difference. Result has 167 places, 284 transitions, 1638 flow [2023-11-21 22:22:21,904 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 22:22:21,904 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 27 predicate places. [2023-11-21 22:22:21,905 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 284 transitions, 1638 flow [2023-11-21 22:22:21,905 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 22:22:21,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:21,906 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 22:22:21,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:22:21,906 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 22:22:21,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -468383767, now seen corresponding path program 1 times [2023-11-21 22:22:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:21,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970671159] [2023-11-21 22:22:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:21,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:22,372 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 22:22:22,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970671159] [2023-11-21 22:22:22,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970671159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:22,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:22,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:22,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511046674] [2023-11-21 22:22:22,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:22,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:22,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:22,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:22,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:22,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 140 [2023-11-21 22:22:22,574 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 22:22:22,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:22,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 140 [2023-11-21 22:22:22,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:26,388 INFO L124 PetriNetUnfolderBase]: 8581/20124 cut-off events. [2023-11-21 22:22:26,388 INFO L125 PetriNetUnfolderBase]: For 22364/24762 co-relation queries the response was YES. [2023-11-21 22:22:26,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58964 conditions, 20124 events. 8581/20124 cut-off events. For 22364/24762 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 190622 event pairs, 1832 based on Foata normal form. 70/19104 useless extension candidates. Maximal degree in co-relation 20664. Up to 11835 conditions per place. [2023-11-21 22:22:26,642 INFO L140 encePairwiseOnDemand]: 105/140 looper letters, 173 selfloop transitions, 249 changer transitions 0/525 dead transitions. [2023-11-21 22:22:26,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 525 transitions, 3950 flow [2023-11-21 22:22:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 743 transitions. [2023-11-21 22:22:26,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2023-11-21 22:22:26,647 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 743 transitions. [2023-11-21 22:22:26,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 743 transitions. [2023-11-21 22:22:26,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:26,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 743 transitions. [2023-11-21 22:22:26,772 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 22:22:26,775 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 22:22:26,775 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 22:22:26,775 INFO L175 Difference]: Start difference. First operand has 167 places, 284 transitions, 1638 flow. Second operand 6 states and 743 transitions. [2023-11-21 22:22:26,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 525 transitions, 3950 flow [2023-11-21 22:22:26,843 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 22:22:26,853 INFO L231 Difference]: Finished difference. Result has 171 places, 517 transitions, 4284 flow [2023-11-21 22:22:26,853 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 22:22:26,854 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 31 predicate places. [2023-11-21 22:22:26,854 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 517 transitions, 4284 flow [2023-11-21 22:22:26,855 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 22:22:26,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:26,855 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 22:22:26,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:22:26,856 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 22:22:26,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1146121371, now seen corresponding path program 1 times [2023-11-21 22:22:26,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:26,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369406622] [2023-11-21 22:22:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:26,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:27,470 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 22:22:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369406622] [2023-11-21 22:22:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369406622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809741559] [2023-11-21 22:22:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:27,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:27,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:27,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:27,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec1953-94e4-4c58-99f7-d4fc439a72bf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:22:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:27,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 22:22:27,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:27,698 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 22:22:27,842 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 22:22:27,879 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 22:22:27,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:27,926 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 22:22:27,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:22:27,986 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 22:22:28,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:28,004 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 22:22:28,014 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 22:22:28,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:28,046 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_576 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_576) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 2)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_576 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_576) c_threadThread1of2ForFork0_~t~0.base) c_threadThread1of2ForFork0_~t~0.offset) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_576 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_576) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 1))))) is different from false [2023-11-21 22:22:28,061 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_threadThread1of2ForFork0_~t~0.offset 2))) (let ((.cse0 (store |c_#race| c_threadThread1of2ForFork0_~t~0.base (store (select |c_#race| c_threadThread1of2ForFork0_~t~0.base) .cse1 |c_threadThread1of2ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_576 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_576) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 1)))) (forall ((v_ArrVal_576 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_576) c_threadThread1of2ForFork0_~t~0.base) c_threadThread1of2ForFork0_~t~0.offset) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_576 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_576) c_threadThread1of2ForFork0_~t~0.base) .cse1)))))) is different from false [2023-11-21 22:22:30,273 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 22:22:30,322 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 22:22:30,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809741559] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:30,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:30,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2023-11-21 22:22:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586434403] [2023-11-21 22:22:30,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:30,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-21 22:22:30,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-21 22:22:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=774, Unknown=2, NotChecked=114, Total=992 [2023-11-21 22:22:30,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 140 [2023-11-21 22:22:30,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 517 transitions, 4284 flow. Second operand has 32 states, 32 states have (on average 58.78125) internal successors, (1881), 32 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states 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 22:22:30,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:30,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 140 [2023-11-21 22:22:30,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand