./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.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_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/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_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/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_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:13:26,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:13:26,504 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:13:26,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:13:26,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:13:26,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:13:26,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:13:26,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:13:26,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:13:26,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:13:26,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:13:26,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:13:26,566 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:13:26,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:13:26,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:13:26,570 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:13:26,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:13:26,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:13:26,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:13:26,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:13:26,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:13:26,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:13:26,574 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:13:26,574 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:13:26,575 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:13:26,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:13:26,576 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:13:26,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:13:26,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:13:26,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:13:26,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:26,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:13:26,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:13:26,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:13:26,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:13:26,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:13:26,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:13:26,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:13:26,582 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:13:26,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:13:26,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:13:26,583 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_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2023-11-21 22:13:26,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:13:26,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:13:26,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:13:26,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:13:26,955 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:13:26,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2023-11-21 22:13:30,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:13:30,384 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:13:30,385 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2023-11-21 22:13:30,411 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/data/27d60edfd/d3cb9f13102b4cce96f63ac8244c24ae/FLAGdf663be49 [2023-11-21 22:13:30,433 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/data/27d60edfd/d3cb9f13102b4cce96f63ac8244c24ae [2023-11-21 22:13:30,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:13:30,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:13:30,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:30,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:13:30,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:13:30,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:30" (1/1) ... [2023-11-21 22:13:30,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d44fa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:30, skipping insertion in model container [2023-11-21 22:13:30,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:30" (1/1) ... [2023-11-21 22:13:30,514 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:13:30,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:30,892 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:13:30,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:31,044 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:13:31,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31 WrapperNode [2023-11-21 22:13:31,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:31,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:31,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:13:31,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:13:31,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,130 INFO L138 Inliner]: procedures = 171, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 106 [2023-11-21 22:13:31,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:31,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:13:31,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:13:31,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:13:31,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,159 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,181 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:13:31,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:13:31,203 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:13:31,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:13:31,204 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (1/1) ... [2023-11-21 22:13:31,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:31,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:31,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:13:31,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:13:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:13:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:13:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:13:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:13:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:13:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 22:13:31,290 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 22:13:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:13:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:13:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:13:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:13:31,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:13:31,293 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 22:13:31,504 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:13:31,509 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:13:31,904 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:13:31,941 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:13:31,941 INFO L308 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-21 22:13:31,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:31 BoogieIcfgContainer [2023-11-21 22:13:31,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:13:31,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:13:31,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:13:31,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:13:31,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:13:30" (1/3) ... [2023-11-21 22:13:31,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef62cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:31, skipping insertion in model container [2023-11-21 22:13:31,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:31" (2/3) ... [2023-11-21 22:13:31,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef62cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:31, skipping insertion in model container [2023-11-21 22:13:31,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:31" (3/3) ... [2023-11-21 22:13:31,954 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-11-21 22:13:31,964 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:13:31,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:13:31,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-21 22:13:31,977 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:13:32,062 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 22:13:32,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 182 transitions, 371 flow [2023-11-21 22:13:32,208 INFO L124 PetriNetUnfolderBase]: 19/239 cut-off events. [2023-11-21 22:13:32,208 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:13:32,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 239 events. 19/239 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 759 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 131. Up to 4 conditions per place. [2023-11-21 22:13:32,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 182 transitions, 371 flow [2023-11-21 22:13:32,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 182 transitions, 371 flow [2023-11-21 22:13:32,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:13:32,265 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;@74acd239, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:13:32,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-21 22:13:32,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:13:32,285 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-11-21 22:13:32,286 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:13:32,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:32,287 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] [2023-11-21 22:13:32,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:13:32,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:32,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1529667346, now seen corresponding path program 1 times [2023-11-21 22:13:32,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:32,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878770194] [2023-11-21 22:13:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:32,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:32,572 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 22:13:32,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:32,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878770194] [2023-11-21 22:13:32,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878770194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:32,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:32,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:32,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853772036] [2023-11-21 22:13:32,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:32,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:32,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:32,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:32,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 182 [2023-11-21 22:13:32,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 182 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 22:13:32,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:32,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 182 [2023-11-21 22:13:32,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:32,966 INFO L124 PetriNetUnfolderBase]: 25/486 cut-off events. [2023-11-21 22:13:32,967 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:13:32,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 486 events. 25/486 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1940 event pairs, 24 based on Foata normal form. 54/490 useless extension candidates. Maximal degree in co-relation 446. Up to 69 conditions per place. [2023-11-21 22:13:32,973 INFO L140 encePairwiseOnDemand]: 167/182 looper letters, 16 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-11-21 22:13:32,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 166 transitions, 375 flow [2023-11-21 22:13:32,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-11-21 22:13:32,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2023-11-21 22:13:32,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-11-21 22:13:32,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-11-21 22:13:32,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:32,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-11-21 22:13:33,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 22:13:33,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 22:13:33,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 22:13:33,013 INFO L175 Difference]: Start difference. First operand has 172 places, 182 transitions, 371 flow. Second operand 3 states and 481 transitions. [2023-11-21 22:13:33,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 166 transitions, 375 flow [2023-11-21 22:13:33,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 166 transitions, 375 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:13:33,024 INFO L231 Difference]: Finished difference. Result has 170 places, 166 transitions, 343 flow [2023-11-21 22:13:33,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=170, PETRI_TRANSITIONS=166} [2023-11-21 22:13:33,030 INFO L281 CegarLoopForPetriNet]: 172 programPoint places, -2 predicate places. [2023-11-21 22:13:33,030 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 166 transitions, 343 flow [2023-11-21 22:13:33,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 22:13:33,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:33,031 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 22:13:33,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:13:33,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:13:33,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1131518709, now seen corresponding path program 1 times [2023-11-21 22:13:33,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:33,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414474108] [2023-11-21 22:13:33,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:33,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,140 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 22:13:33,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414474108] [2023-11-21 22:13:33,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414474108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:33,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:33,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:33,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594737047] [2023-11-21 22:13:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:33,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:33,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:33,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 182 [2023-11-21 22:13:33,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 166 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 22:13:33,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:33,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 182 [2023-11-21 22:13:33,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:33,287 INFO L124 PetriNetUnfolderBase]: 25/483 cut-off events. [2023-11-21 22:13:33,288 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:13:33,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 483 events. 25/483 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1918 event pairs, 24 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 519. Up to 66 conditions per place. [2023-11-21 22:13:33,293 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 14 selfloop transitions, 1 changer transitions 0/164 dead transitions. [2023-11-21 22:13:33,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 164 transitions, 369 flow [2023-11-21 22:13:33,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-11-21 22:13:33,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8663003663003663 [2023-11-21 22:13:33,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-11-21 22:13:33,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-11-21 22:13:33,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:33,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-11-21 22:13:33,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 22:13:33,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 22:13:33,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 22:13:33,307 INFO L175 Difference]: Start difference. First operand has 170 places, 166 transitions, 343 flow. Second operand 3 states and 473 transitions. [2023-11-21 22:13:33,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 164 transitions, 369 flow [2023-11-21 22:13:33,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 164 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:33,316 INFO L231 Difference]: Finished difference. Result has 168 places, 164 transitions, 337 flow [2023-11-21 22:13:33,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=168, PETRI_TRANSITIONS=164} [2023-11-21 22:13:33,318 INFO L281 CegarLoopForPetriNet]: 172 programPoint places, -4 predicate places. [2023-11-21 22:13:33,318 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 164 transitions, 337 flow [2023-11-21 22:13:33,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 22:13:33,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:33,319 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] [2023-11-21 22:13:33,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:13:33,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:13:33,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:33,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1420037707, now seen corresponding path program 1 times [2023-11-21 22:13:33,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:33,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906686196] [2023-11-21 22:13:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:33,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,426 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 22:13:33,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:33,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906686196] [2023-11-21 22:13:33,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906686196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:33,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:33,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:33,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177418519] [2023-11-21 22:13:33,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:33,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:33,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:33,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:33,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 182 [2023-11-21 22:13:33,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 164 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 22:13:33,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:33,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 182 [2023-11-21 22:13:33,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:33,547 INFO L124 PetriNetUnfolderBase]: 25/420 cut-off events. [2023-11-21 22:13:33,547 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:13:33,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 420 events. 25/420 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1629 event pairs, 24 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 459. Up to 68 conditions per place. [2023-11-21 22:13:33,550 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 16 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-11-21 22:13:33,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 163 transitions, 371 flow [2023-11-21 22:13:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-11-21 22:13:33,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8589743589743589 [2023-11-21 22:13:33,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-11-21 22:13:33,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-11-21 22:13:33,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:33,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-11-21 22:13:33,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 22:13:33,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 22:13:33,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 22:13:33,559 INFO L175 Difference]: Start difference. First operand has 168 places, 164 transitions, 337 flow. Second operand 3 states and 469 transitions. [2023-11-21 22:13:33,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 163 transitions, 371 flow [2023-11-21 22:13:33,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 163 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:33,590 INFO L231 Difference]: Finished difference. Result has 168 places, 163 transitions, 338 flow [2023-11-21 22:13:33,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=168, PETRI_TRANSITIONS=163} [2023-11-21 22:13:33,592 INFO L281 CegarLoopForPetriNet]: 172 programPoint places, -4 predicate places. [2023-11-21 22:13:33,592 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 163 transitions, 338 flow [2023-11-21 22:13:33,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 22:13:33,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:33,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:33,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:13:33,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:13:33,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2086099826, now seen corresponding path program 1 times [2023-11-21 22:13:33,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:33,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3769017] [2023-11-21 22:13:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:33,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,722 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 22:13:33,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:33,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3769017] [2023-11-21 22:13:33,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3769017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:33,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:33,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:13:33,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912634168] [2023-11-21 22:13:33,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:33,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:33,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:33,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:33,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:33,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 182 [2023-11-21 22:13:33,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 163 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 22:13:33,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:33,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 182 [2023-11-21 22:13:33,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:33,851 INFO L124 PetriNetUnfolderBase]: 36/519 cut-off events. [2023-11-21 22:13:33,852 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:13:33,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 519 events. 36/519 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2139 event pairs, 0 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 580. Up to 82 conditions per place. [2023-11-21 22:13:33,855 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 20 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2023-11-21 22:13:33,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 169 transitions, 394 flow [2023-11-21 22:13:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:33,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-11-21 22:13:33,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8827838827838828 [2023-11-21 22:13:33,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-11-21 22:13:33,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-11-21 22:13:33,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:33,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-11-21 22:13:33,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 22:13:33,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 22:13:33,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 22:13:33,864 INFO L175 Difference]: Start difference. First operand has 168 places, 163 transitions, 338 flow. Second operand 3 states and 482 transitions. [2023-11-21 22:13:33,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 169 transitions, 394 flow [2023-11-21 22:13:33,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 169 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:33,870 INFO L231 Difference]: Finished difference. Result has 169 places, 163 transitions, 342 flow [2023-11-21 22:13:33,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=169, PETRI_TRANSITIONS=163} [2023-11-21 22:13:33,871 INFO L281 CegarLoopForPetriNet]: 172 programPoint places, -3 predicate places. [2023-11-21 22:13:33,872 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 163 transitions, 342 flow [2023-11-21 22:13:33,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 22:13:33,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:33,873 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] [2023-11-21 22:13:33,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:13:33,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:13:33,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash 219926651, now seen corresponding path program 1 times [2023-11-21 22:13:33,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:33,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316635155] [2023-11-21 22:13:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:33,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,933 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 22:13:33,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:33,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316635155] [2023-11-21 22:13:33,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316635155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:33,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:33,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:33,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641592184] [2023-11-21 22:13:33,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:33,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:33,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:33,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:33,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 182 [2023-11-21 22:13:33,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 163 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 22:13:33,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:33,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 182 [2023-11-21 22:13:33,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:34,027 INFO L124 PetriNetUnfolderBase]: 20/340 cut-off events. [2023-11-21 22:13:34,027 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-21 22:13:34,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 340 events. 20/340 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1121 event pairs, 11 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 370. Up to 41 conditions per place. [2023-11-21 22:13:34,030 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 16 selfloop transitions, 1 changer transitions 0/163 dead transitions. [2023-11-21 22:13:34,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 163 transitions, 376 flow [2023-11-21 22:13:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-11-21 22:13:34,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.86996336996337 [2023-11-21 22:13:34,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-11-21 22:13:34,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-11-21 22:13:34,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:34,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-11-21 22:13:34,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 22:13:34,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 22:13:34,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 22:13:34,038 INFO L175 Difference]: Start difference. First operand has 169 places, 163 transitions, 342 flow. Second operand 3 states and 475 transitions. [2023-11-21 22:13:34,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 163 transitions, 376 flow [2023-11-21 22:13:34,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 163 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:34,043 INFO L231 Difference]: Finished difference. Result has 167 places, 161 transitions, 336 flow [2023-11-21 22:13:34,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=167, PETRI_TRANSITIONS=161} [2023-11-21 22:13:34,045 INFO L281 CegarLoopForPetriNet]: 172 programPoint places, -5 predicate places. [2023-11-21 22:13:34,045 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 161 transitions, 336 flow [2023-11-21 22:13:34,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 22:13:34,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:34,046 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-21 22:13:34,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:13:34,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:13:34,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:34,048 INFO L85 PathProgramCache]: Analyzing trace with hash 834845347, now seen corresponding path program 1 times [2023-11-21 22:13:34,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:34,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485252660] [2023-11-21 22:13:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:34,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:13:34,074 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:13:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:13:34,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:13:34,126 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:13:34,127 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-21 22:13:34,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-21 22:13:34,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-21 22:13:34,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-21 22:13:34,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-21 22:13:34,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-21 22:13:34,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-21 22:13:34,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-21 22:13:34,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-21 22:13:34,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-21 22:13:34,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-21 22:13:34,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-21 22:13:34,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-21 22:13:34,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-21 22:13:34,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-21 22:13:34,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-21 22:13:34,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-21 22:13:34,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-21 22:13:34,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-21 22:13:34,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:13:34,141 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-21 22:13:34,143 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:13:34,144 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:13:34,237 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:13:34,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 253 transitions, 522 flow [2023-11-21 22:13:34,348 INFO L124 PetriNetUnfolderBase]: 34/399 cut-off events. [2023-11-21 22:13:34,348 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:13:34,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 399 events. 34/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1652 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 241. Up to 8 conditions per place. [2023-11-21 22:13:34,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 253 transitions, 522 flow [2023-11-21 22:13:34,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 253 transitions, 522 flow [2023-11-21 22:13:34,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:13:34,363 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;@74acd239, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:13:34,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-21 22:13:34,368 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:13:34,368 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-11-21 22:13:34,368 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:13:34,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:34,368 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] [2023-11-21 22:13:34,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-21 22:13:34,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1678313041, now seen corresponding path program 1 times [2023-11-21 22:13:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:34,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701280726] [2023-11-21 22:13:34,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:34,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:34,405 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 22:13:34,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:34,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701280726] [2023-11-21 22:13:34,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701280726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:34,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:34,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:34,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859127157] [2023-11-21 22:13:34,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:34,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:34,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:34,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:34,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:34,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 253 [2023-11-21 22:13:34,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 253 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 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 22:13:34,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:34,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 253 [2023-11-21 22:13:34,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:35,319 INFO L124 PetriNetUnfolderBase]: 430/3689 cut-off events. [2023-11-21 22:13:35,319 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-21 22:13:35,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4473 conditions, 3689 events. 430/3689 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 32271 event pairs, 420 based on Foata normal form. 575/3886 useless extension candidates. Maximal degree in co-relation 3713. Up to 739 conditions per place. [2023-11-21 22:13:35,357 INFO L140 encePairwiseOnDemand]: 232/253 looper letters, 24 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2023-11-21 22:13:35,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 231 transitions, 530 flow [2023-11-21 22:13:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:35,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:35,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-11-21 22:13:35,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8774703557312253 [2023-11-21 22:13:35,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-11-21 22:13:35,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-11-21 22:13:35,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:35,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-11-21 22:13:35,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 22:13:35,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:13:35,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:13:35,367 INFO L175 Difference]: Start difference. First operand has 238 places, 253 transitions, 522 flow. Second operand 3 states and 666 transitions. [2023-11-21 22:13:35,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 231 transitions, 530 flow [2023-11-21 22:13:35,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 231 transitions, 530 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:13:35,377 INFO L231 Difference]: Finished difference. Result has 236 places, 231 transitions, 482 flow [2023-11-21 22:13:35,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=236, PETRI_TRANSITIONS=231} [2023-11-21 22:13:35,380 INFO L281 CegarLoopForPetriNet]: 238 programPoint places, -2 predicate places. [2023-11-21 22:13:35,380 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 231 transitions, 482 flow [2023-11-21 22:13:35,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 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 22:13:35,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:35,385 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 22:13:35,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:13:35,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-21 22:13:35,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2048893426, now seen corresponding path program 1 times [2023-11-21 22:13:35,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:35,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774385257] [2023-11-21 22:13:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:35,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:35,424 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 22:13:35,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:35,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774385257] [2023-11-21 22:13:35,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774385257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:35,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:35,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:35,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097555773] [2023-11-21 22:13:35,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:35,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:35,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:35,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 253 [2023-11-21 22:13:35,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 231 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 22:13:35,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:35,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 253 [2023-11-21 22:13:35,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:36,299 INFO L124 PetriNetUnfolderBase]: 418/3623 cut-off events. [2023-11-21 22:13:36,299 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-21 22:13:36,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4388 conditions, 3623 events. 418/3623 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 31411 event pairs, 414 based on Foata normal form. 0/3266 useless extension candidates. Maximal degree in co-relation 4347. Up to 717 conditions per place. [2023-11-21 22:13:36,338 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 22 selfloop transitions, 1 changer transitions 0/229 dead transitions. [2023-11-21 22:13:36,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 229 transitions, 524 flow [2023-11-21 22:13:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-11-21 22:13:36,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8590250329380764 [2023-11-21 22:13:36,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-11-21 22:13:36,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-11-21 22:13:36,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:36,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-11-21 22:13:36,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 22:13:36,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:13:36,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:13:36,348 INFO L175 Difference]: Start difference. First operand has 236 places, 231 transitions, 482 flow. Second operand 3 states and 652 transitions. [2023-11-21 22:13:36,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 229 transitions, 524 flow [2023-11-21 22:13:36,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 229 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:36,356 INFO L231 Difference]: Finished difference. Result has 234 places, 229 transitions, 476 flow [2023-11-21 22:13:36,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=234, PETRI_TRANSITIONS=229} [2023-11-21 22:13:36,359 INFO L281 CegarLoopForPetriNet]: 238 programPoint places, -4 predicate places. [2023-11-21 22:13:36,359 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 229 transitions, 476 flow [2023-11-21 22:13:36,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 22:13:36,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:36,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:36,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:13:36,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-21 22:13:36,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:36,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1039862130, now seen corresponding path program 1 times [2023-11-21 22:13:36,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:36,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104502327] [2023-11-21 22:13:36,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:36,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:36,424 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 22:13:36,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:36,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104502327] [2023-11-21 22:13:36,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104502327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:36,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:36,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:36,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781573246] [2023-11-21 22:13:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:36,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:36,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:36,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:36,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 253 [2023-11-21 22:13:36,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 229 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states 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 22:13:36,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:36,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 253 [2023-11-21 22:13:36,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:37,314 INFO L124 PetriNetUnfolderBase]: 564/3794 cut-off events. [2023-11-21 22:13:37,314 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2023-11-21 22:13:37,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4808 conditions, 3794 events. 564/3794 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 34346 event pairs, 552 based on Foata normal form. 0/3406 useless extension candidates. Maximal degree in co-relation 4769. Up to 957 conditions per place. [2023-11-21 22:13:37,354 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 26 selfloop transitions, 2 changer transitions 0/228 dead transitions. [2023-11-21 22:13:37,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 228 transitions, 530 flow [2023-11-21 22:13:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-11-21 22:13:37,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2023-11-21 22:13:37,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-11-21 22:13:37,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-11-21 22:13:37,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:37,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-11-21 22:13:37,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 22:13:37,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:13:37,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:13:37,364 INFO L175 Difference]: Start difference. First operand has 234 places, 229 transitions, 476 flow. Second operand 3 states and 644 transitions. [2023-11-21 22:13:37,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 228 transitions, 530 flow [2023-11-21 22:13:37,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 228 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:37,372 INFO L231 Difference]: Finished difference. Result has 234 places, 228 transitions, 477 flow [2023-11-21 22:13:37,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=234, PETRI_TRANSITIONS=228} [2023-11-21 22:13:37,373 INFO L281 CegarLoopForPetriNet]: 238 programPoint places, -4 predicate places. [2023-11-21 22:13:37,374 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 228 transitions, 477 flow [2023-11-21 22:13:37,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states 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 22:13:37,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:37,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:37,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:13:37,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-21 22:13:37,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash -682868917, now seen corresponding path program 1 times [2023-11-21 22:13:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:37,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437309631] [2023-11-21 22:13:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:37,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:37,458 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 22:13:37,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:37,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437309631] [2023-11-21 22:13:37,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437309631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:37,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:37,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:13:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501937096] [2023-11-21 22:13:37,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:37,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:37,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 253 [2023-11-21 22:13:37,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 228 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:37,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:37,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 253 [2023-11-21 22:13:37,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:38,470 INFO L124 PetriNetUnfolderBase]: 608/4691 cut-off events. [2023-11-21 22:13:38,470 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-21 22:13:38,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5756 conditions, 4691 events. 608/4691 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 44604 event pairs, 484 based on Foata normal form. 1/4241 useless extension candidates. Maximal degree in co-relation 5717. Up to 1011 conditions per place. [2023-11-21 22:13:38,526 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 29 selfloop transitions, 2 changer transitions 0/235 dead transitions. [2023-11-21 22:13:38,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 235 transitions, 553 flow [2023-11-21 22:13:38,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-11-21 22:13:38,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8722002635046113 [2023-11-21 22:13:38,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-11-21 22:13:38,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-11-21 22:13:38,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:38,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-11-21 22:13:38,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states 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 22:13:38,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:13:38,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:13:38,539 INFO L175 Difference]: Start difference. First operand has 234 places, 228 transitions, 477 flow. Second operand 3 states and 662 transitions. [2023-11-21 22:13:38,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 235 transitions, 553 flow [2023-11-21 22:13:38,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 235 transitions, 549 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:38,550 INFO L231 Difference]: Finished difference. Result has 235 places, 229 transitions, 485 flow [2023-11-21 22:13:38,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=485, PETRI_PLACES=235, PETRI_TRANSITIONS=229} [2023-11-21 22:13:38,552 INFO L281 CegarLoopForPetriNet]: 238 programPoint places, -3 predicate places. [2023-11-21 22:13:38,552 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 229 transitions, 485 flow [2023-11-21 22:13:38,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:38,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:38,553 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] [2023-11-21 22:13:38,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:13:38,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-21 22:13:38,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:38,556 INFO L85 PathProgramCache]: Analyzing trace with hash 610105760, now seen corresponding path program 1 times [2023-11-21 22:13:38,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:38,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916136480] [2023-11-21 22:13:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:38,627 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 22:13:38,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916136480] [2023-11-21 22:13:38,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916136480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:38,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:38,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:38,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708232018] [2023-11-21 22:13:38,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:38,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:38,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:38,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 253 [2023-11-21 22:13:38,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 229 transitions, 485 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 22:13:38,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:38,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 253 [2023-11-21 22:13:38,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:39,684 INFO L124 PetriNetUnfolderBase]: 597/4128 cut-off events. [2023-11-21 22:13:39,685 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-21 22:13:39,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5215 conditions, 4128 events. 597/4128 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 38031 event pairs, 498 based on Foata normal form. 0/3794 useless extension candidates. Maximal degree in co-relation 5176. Up to 941 conditions per place. [2023-11-21 22:13:39,719 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 34 selfloop transitions, 2 changer transitions 0/234 dead transitions. [2023-11-21 22:13:39,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 234 transitions, 572 flow [2023-11-21 22:13:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-11-21 22:13:39,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2023-11-21 22:13:39,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-11-21 22:13:39,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-11-21 22:13:39,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:39,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-11-21 22:13:39,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 22:13:39,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:13:39,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:13:39,728 INFO L175 Difference]: Start difference. First operand has 235 places, 229 transitions, 485 flow. Second operand 3 states and 649 transitions. [2023-11-21 22:13:39,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 234 transitions, 572 flow [2023-11-21 22:13:39,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 234 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:39,735 INFO L231 Difference]: Finished difference. Result has 233 places, 227 transitions, 489 flow [2023-11-21 22:13:39,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=489, PETRI_PLACES=233, PETRI_TRANSITIONS=227} [2023-11-21 22:13:39,737 INFO L281 CegarLoopForPetriNet]: 238 programPoint places, -5 predicate places. [2023-11-21 22:13:39,737 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 227 transitions, 489 flow [2023-11-21 22:13:39,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 22:13:39,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:39,738 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] [2023-11-21 22:13:39,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:13:39,738 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-21 22:13:39,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash -986126873, now seen corresponding path program 1 times [2023-11-21 22:13:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:39,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895950722] [2023-11-21 22:13:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:39,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:40,206 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 22:13:40,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:40,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895950722] [2023-11-21 22:13:40,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895950722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:40,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:40,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:13:40,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592354076] [2023-11-21 22:13:40,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:40,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:13:40,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:40,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:13:40,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:13:40,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 253 [2023-11-21 22:13:40,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 227 transitions, 489 flow. Second operand has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 22:13:40,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:40,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 253 [2023-11-21 22:13:40,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:44,155 INFO L124 PetriNetUnfolderBase]: 7127/18181 cut-off events. [2023-11-21 22:13:44,155 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2023-11-21 22:13:44,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30179 conditions, 18181 events. 7127/18181 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 196081 event pairs, 1995 based on Foata normal form. 0/17420 useless extension candidates. Maximal degree in co-relation 30139. Up to 5185 conditions per place. [2023-11-21 22:13:44,332 INFO L140 encePairwiseOnDemand]: 209/253 looper letters, 220 selfloop transitions, 84 changer transitions 0/467 dead transitions. [2023-11-21 22:13:44,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 467 transitions, 1621 flow [2023-11-21 22:13:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:13:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:13:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1328 transitions. [2023-11-21 22:13:44,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8748353096179183 [2023-11-21 22:13:44,338 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1328 transitions. [2023-11-21 22:13:44,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1328 transitions. [2023-11-21 22:13:44,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:44,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1328 transitions. [2023-11-21 22:13:44,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.33333333333334) internal successors, (1328), 6 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 22:13:44,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states 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 22:13:44,349 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states 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 22:13:44,349 INFO L175 Difference]: Start difference. First operand has 233 places, 227 transitions, 489 flow. Second operand 6 states and 1328 transitions. [2023-11-21 22:13:44,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 467 transitions, 1621 flow [2023-11-21 22:13:44,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 467 transitions, 1621 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:13:44,363 INFO L231 Difference]: Finished difference. Result has 243 places, 319 transitions, 1121 flow [2023-11-21 22:13:44,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1121, PETRI_PLACES=243, PETRI_TRANSITIONS=319} [2023-11-21 22:13:44,365 INFO L281 CegarLoopForPetriNet]: 238 programPoint places, 5 predicate places. [2023-11-21 22:13:44,365 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 319 transitions, 1121 flow [2023-11-21 22:13:44,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 22:13:44,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:44,366 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 22:13:44,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:13:44,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-21 22:13:44,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:44,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1674113901, now seen corresponding path program 1 times [2023-11-21 22:13:44,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:44,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379414209] [2023-11-21 22:13:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:44,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:44,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379414209] [2023-11-21 22:13:44,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379414209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:13:44,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36346853] [2023-11-21 22:13:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:44,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:44,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:44,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:44,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:13:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:44,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:13:44,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:44,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:44,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:13:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:44,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36346853] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:13:44,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:13:44,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-21 22:13:44,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031898581] [2023-11-21 22:13:44,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:13:44,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:13:44,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:13:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:13:45,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 253 [2023-11-21 22:13:45,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 319 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 209.2) internal successors, (2092), 10 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states 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 22:13:45,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:45,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 253 [2023-11-21 22:13:45,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:47,026 INFO L124 PetriNetUnfolderBase]: 2569/11111 cut-off events. [2023-11-21 22:13:47,026 INFO L125 PetriNetUnfolderBase]: For 1885/2060 co-relation queries the response was YES. [2023-11-21 22:13:47,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19750 conditions, 11111 events. 2569/11111 cut-off events. For 1885/2060 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 120276 event pairs, 505 based on Foata normal form. 267/10939 useless extension candidates. Maximal degree in co-relation 19705. Up to 1242 conditions per place. [2023-11-21 22:13:47,113 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 72 selfloop transitions, 7 changer transitions 0/328 dead transitions. [2023-11-21 22:13:47,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 328 transitions, 1289 flow [2023-11-21 22:13:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:13:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:13:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1944 transitions. [2023-11-21 22:13:47,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8537549407114624 [2023-11-21 22:13:47,120 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1944 transitions. [2023-11-21 22:13:47,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1944 transitions. [2023-11-21 22:13:47,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:47,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1944 transitions. [2023-11-21 22:13:47,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 22:13:47,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states 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 22:13:47,135 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states 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 22:13:47,136 INFO L175 Difference]: Start difference. First operand has 243 places, 319 transitions, 1121 flow. Second operand 9 states and 1944 transitions. [2023-11-21 22:13:47,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 328 transitions, 1289 flow [2023-11-21 22:13:47,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 328 transitions, 1289 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:13:47,150 INFO L231 Difference]: Finished difference. Result has 204 places, 272 transitions, 1033 flow [2023-11-21 22:13:47,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1033, PETRI_PLACES=204, PETRI_TRANSITIONS=272} [2023-11-21 22:13:47,151 INFO L281 CegarLoopForPetriNet]: 238 programPoint places, -34 predicate places. [2023-11-21 22:13:47,151 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 272 transitions, 1033 flow [2023-11-21 22:13:47,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 209.2) internal successors, (2092), 10 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states 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 22:13:47,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:47,153 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2023-11-21 22:13:47,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 22:13:47,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c333729-2a0e-4ead-9b0b-4ead90d7dcec/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 22:13:47,373 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-21 22:13:47,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:47,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1941287194, now seen corresponding path program 1 times [2023-11-21 22:13:47,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:47,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491803587] [2023-11-21 22:13:47,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:47,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:13:47,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:13:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:13:47,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:13:47,445 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:13:47,445 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-21 22:13:47,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-21 22:13:47,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-21 22:13:47,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-21 22:13:47,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-21 22:13:47,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-21 22:13:47,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-21 22:13:47,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-21 22:13:47,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-21 22:13:47,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-21 22:13:47,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-21 22:13:47,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-21 22:13:47,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-21 22:13:47,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-21 22:13:47,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-21 22:13:47,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-21 22:13:47,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-21 22:13:47,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-21 22:13:47,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-21 22:13:47,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-21 22:13:47,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-21 22:13:47,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-21 22:13:47,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-21 22:13:47,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-21 22:13:47,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-21 22:13:47,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:13:47,451 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:47,451 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:13:47,452 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:13:47,514 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 22:13:47,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 304 places, 324 transitions, 675 flow [2023-11-21 22:13:47,631 INFO L124 PetriNetUnfolderBase]: 54/606 cut-off events. [2023-11-21 22:13:47,631 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-21 22:13:47,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 606 events. 54/606 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2798 event pairs, 1 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2023-11-21 22:13:47,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 304 places, 324 transitions, 675 flow [2023-11-21 22:13:47,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 304 places, 324 transitions, 675 flow [2023-11-21 22:13:47,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:13:47,651 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;@74acd239, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:13:47,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-21 22:13:47,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:13:47,654 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-11-21 22:13:47,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:13:47,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:47,655 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] [2023-11-21 22:13:47,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-21 22:13:47,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash 664382323, now seen corresponding path program 1 times [2023-11-21 22:13:47,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:47,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738355078] [2023-11-21 22:13:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:47,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:47,679 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 22:13:47,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:47,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738355078] [2023-11-21 22:13:47,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738355078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:47,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:47,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:47,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454246189] [2023-11-21 22:13:47,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:47,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:47,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:47,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:47,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:47,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 324 [2023-11-21 22:13:47,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 324 transitions, 675 flow. Second operand has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 22:13:47,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:47,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 324 [2023-11-21 22:13:47,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:53,784 INFO L124 PetriNetUnfolderBase]: 5063/29136 cut-off events. [2023-11-21 22:13:53,784 INFO L125 PetriNetUnfolderBase]: For 940/940 co-relation queries the response was YES. [2023-11-21 22:13:53,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36913 conditions, 29136 events. 5063/29136 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 381101 event pairs, 4975 based on Foata normal form. 5556/31871 useless extension candidates. Maximal degree in co-relation 30781. Up to 7345 conditions per place. [2023-11-21 22:13:54,114 INFO L140 encePairwiseOnDemand]: 297/324 looper letters, 32 selfloop transitions, 2 changer transitions 0/296 dead transitions. [2023-11-21 22:13:54,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 296 transitions, 687 flow [2023-11-21 22:13:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-11-21 22:13:54,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8755144032921811 [2023-11-21 22:13:54,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-11-21 22:13:54,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-11-21 22:13:54,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:54,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-11-21 22:13:54,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 22:13:54,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states 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 22:13:54,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states 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 22:13:54,125 INFO L175 Difference]: Start difference. First operand has 304 places, 324 transitions, 675 flow. Second operand 3 states and 851 transitions. [2023-11-21 22:13:54,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 296 transitions, 687 flow [2023-11-21 22:13:54,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 296 transitions, 687 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:13:54,135 INFO L231 Difference]: Finished difference. Result has 302 places, 296 transitions, 623 flow [2023-11-21 22:13:54,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=623, PETRI_PLACES=302, PETRI_TRANSITIONS=296} [2023-11-21 22:13:54,137 INFO L281 CegarLoopForPetriNet]: 304 programPoint places, -2 predicate places. [2023-11-21 22:13:54,137 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 296 transitions, 623 flow [2023-11-21 22:13:54,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 22:13:54,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:54,138 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 22:13:54,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:13:54,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-21 22:13:54,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1478681802, now seen corresponding path program 1 times [2023-11-21 22:13:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:54,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597655262] [2023-11-21 22:13:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:54,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:54,160 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 22:13:54,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:54,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597655262] [2023-11-21 22:13:54,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597655262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:54,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:54,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962842522] [2023-11-21 22:13:54,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:54,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:54,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:54,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 324 [2023-11-21 22:13:54,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 296 transitions, 623 flow. Second operand has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 22:13:54,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:54,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 324 [2023-11-21 22:13:54,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:59,224 INFO L124 PetriNetUnfolderBase]: 4829/27951 cut-off events. [2023-11-21 22:13:59,225 INFO L125 PetriNetUnfolderBase]: For 942/942 co-relation queries the response was YES. [2023-11-21 22:13:59,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35382 conditions, 27951 events. 4829/27951 cut-off events. For 942/942 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 362746 event pairs, 4795 based on Foata normal form. 0/25297 useless extension candidates. Maximal degree in co-relation 35340. Up to 6996 conditions per place. [2023-11-21 22:13:59,486 INFO L140 encePairwiseOnDemand]: 321/324 looper letters, 30 selfloop transitions, 1 changer transitions 0/294 dead transitions. [2023-11-21 22:13:59,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 294 transitions, 681 flow [2023-11-21 22:13:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:59,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2023-11-21 22:13:59,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8549382716049383 [2023-11-21 22:13:59,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2023-11-21 22:13:59,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2023-11-21 22:13:59,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:59,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2023-11-21 22:13:59,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states 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 22:13:59,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states 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 22:13:59,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states 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 22:13:59,497 INFO L175 Difference]: Start difference. First operand has 302 places, 296 transitions, 623 flow. Second operand 3 states and 831 transitions. [2023-11-21 22:13:59,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 294 transitions, 681 flow [2023-11-21 22:13:59,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 294 transitions, 677 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:59,505 INFO L231 Difference]: Finished difference. Result has 300 places, 294 transitions, 617 flow [2023-11-21 22:13:59,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=617, PETRI_PLACES=300, PETRI_TRANSITIONS=294} [2023-11-21 22:13:59,507 INFO L281 CegarLoopForPetriNet]: 304 programPoint places, -4 predicate places. [2023-11-21 22:13:59,507 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 294 transitions, 617 flow [2023-11-21 22:13:59,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 22:13:59,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:59,508 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] [2023-11-21 22:13:59,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:13:59,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-21 22:13:59,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:59,508 INFO L85 PathProgramCache]: Analyzing trace with hash -223710794, now seen corresponding path program 1 times [2023-11-21 22:13:59,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:59,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499719724] [2023-11-21 22:13:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:59,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:59,534 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 22:13:59,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:59,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499719724] [2023-11-21 22:13:59,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499719724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:59,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:59,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:59,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926227628] [2023-11-21 22:13:59,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:59,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:59,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:59,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:59,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:59,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 324 [2023-11-21 22:13:59,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 294 transitions, 617 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states 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 22:13:59,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:59,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 324 [2023-11-21 22:13:59,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:06,367 INFO L124 PetriNetUnfolderBase]: 8555/38642 cut-off events. [2023-11-21 22:14:06,367 INFO L125 PetriNetUnfolderBase]: For 1474/1474 co-relation queries the response was YES. [2023-11-21 22:14:06,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51608 conditions, 38642 events. 8555/38642 cut-off events. For 1474/1474 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 518352 event pairs, 8425 based on Foata normal form. 0/35044 useless extension candidates. Maximal degree in co-relation 51568. Up to 12286 conditions per place. [2023-11-21 22:14:06,742 INFO L140 encePairwiseOnDemand]: 321/324 looper letters, 36 selfloop transitions, 2 changer transitions 0/293 dead transitions. [2023-11-21 22:14:06,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 293 transitions, 691 flow [2023-11-21 22:14:06,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:06,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2023-11-21 22:14:06,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8425925925925926 [2023-11-21 22:14:06,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2023-11-21 22:14:06,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2023-11-21 22:14:06,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:06,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2023-11-21 22:14:06,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 22:14:06,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states 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 22:14:06,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states 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 22:14:06,754 INFO L175 Difference]: Start difference. First operand has 300 places, 294 transitions, 617 flow. Second operand 3 states and 819 transitions. [2023-11-21 22:14:06,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 293 transitions, 691 flow [2023-11-21 22:14:06,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 293 transitions, 690 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:06,769 INFO L231 Difference]: Finished difference. Result has 300 places, 293 transitions, 618 flow [2023-11-21 22:14:06,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=300, PETRI_TRANSITIONS=293} [2023-11-21 22:14:06,771 INFO L281 CegarLoopForPetriNet]: 304 programPoint places, -4 predicate places. [2023-11-21 22:14:06,771 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 293 transitions, 618 flow [2023-11-21 22:14:06,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states 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 22:14:06,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:06,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:06,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 22:14:06,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-21 22:14:06,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:06,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1470653327, now seen corresponding path program 1 times [2023-11-21 22:14:06,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:06,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692905304] [2023-11-21 22:14:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:06,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:06,814 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 22:14:06,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:06,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692905304] [2023-11-21 22:14:06,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692905304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:06,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:06,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:14:06,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724886446] [2023-11-21 22:14:06,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:06,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:06,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:06,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:06,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:06,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 324 [2023-11-21 22:14:06,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 293 transitions, 618 flow. Second operand has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:06,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:06,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 324 [2023-11-21 22:14:06,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:13,708 INFO L124 PetriNetUnfolderBase]: 7004/38768 cut-off events. [2023-11-21 22:14:13,708 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-11-21 22:14:13,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49268 conditions, 38768 events. 7004/38768 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 531072 event pairs, 6075 based on Foata normal form. 1/35157 useless extension candidates. Maximal degree in co-relation 49228. Up to 10060 conditions per place. [2023-11-21 22:14:14,098 INFO L140 encePairwiseOnDemand]: 321/324 looper letters, 37 selfloop transitions, 2 changer transitions 0/300 dead transitions. [2023-11-21 22:14:14,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 300 transitions, 710 flow [2023-11-21 22:14:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 841 transitions. [2023-11-21 22:14:14,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8652263374485597 [2023-11-21 22:14:14,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 841 transitions. [2023-11-21 22:14:14,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 841 transitions. [2023-11-21 22:14:14,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:14,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 841 transitions. [2023-11-21 22:14:14,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 0 states have call successors, (0), 0 states 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 22:14:14,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states 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 22:14:14,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states 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 22:14:14,109 INFO L175 Difference]: Start difference. First operand has 300 places, 293 transitions, 618 flow. Second operand 3 states and 841 transitions. [2023-11-21 22:14:14,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 300 transitions, 710 flow [2023-11-21 22:14:14,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 300 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:14,119 INFO L231 Difference]: Finished difference. Result has 301 places, 294 transitions, 626 flow [2023-11-21 22:14:14,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=626, PETRI_PLACES=301, PETRI_TRANSITIONS=294} [2023-11-21 22:14:14,120 INFO L281 CegarLoopForPetriNet]: 304 programPoint places, -3 predicate places. [2023-11-21 22:14:14,120 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 294 transitions, 626 flow [2023-11-21 22:14:14,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:14,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:14,121 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] [2023-11-21 22:14:14,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-21 22:14:14,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-21 22:14:14,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:14,122 INFO L85 PathProgramCache]: Analyzing trace with hash 483143525, now seen corresponding path program 1 times [2023-11-21 22:14:14,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:14,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063075562] [2023-11-21 22:14:14,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:14,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:14,161 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 22:14:14,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:14,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063075562] [2023-11-21 22:14:14,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063075562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:14,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:14,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:14:14,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296430753] [2023-11-21 22:14:14,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:14,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:14,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:14,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:14,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 324 [2023-11-21 22:14:14,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 294 transitions, 626 flow. Second operand has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 22:14:14,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:14,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 324 [2023-11-21 22:14:14,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand