./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:38:51,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:38:51,630 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-28 23:38:51,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:38:51,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:38:51,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:38:51,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:38:51,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:38:51,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:38:51,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:38:51,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:38:51,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:38:51,659 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:38:51,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:38:51,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:38:51,661 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:38:51,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:38:51,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:38:51,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:38:51,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:38:51,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:38:51,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:38:51,664 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-28 23:38:51,665 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:38:51,665 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:38:51,666 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:38:51,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:38:51,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:38:51,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:38:51,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:38:51,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:38:51,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:38:51,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:38:51,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:38:51,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:38:51,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:38:51,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:38:51,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:38:51,671 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:38:51,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:38:51,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:38:51,671 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_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2023-11-28 23:38:51,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:38:51,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:38:51,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:38:51,920 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:38:51,921 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:38:51,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2023-11-28 23:38:54,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:38:54,897 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:38:54,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2023-11-28 23:38:54,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/data/2dc808169/cc625386a9e445fb8a6fe41339e938b0/FLAGef4182940 [2023-11-28 23:38:54,928 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/data/2dc808169/cc625386a9e445fb8a6fe41339e938b0 [2023-11-28 23:38:54,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:38:54,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:38:54,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:38:54,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:38:54,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:38:54,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:38:54" (1/1) ... [2023-11-28 23:38:54,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488ac71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:54, skipping insertion in model container [2023-11-28 23:38:54,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:38:54" (1/1) ... [2023-11-28 23:38:54,990 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:38:55,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:38:55,385 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:38:55,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:38:55,478 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:38:55,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55 WrapperNode [2023-11-28 23:38:55,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:38:55,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:38:55,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:38:55,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:38:55,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,527 INFO L138 Inliner]: procedures = 265, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-11-28 23:38:55,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:38:55,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:38:55,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:38:55,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:38:55,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:38:55,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:38:55,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:38:55,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:38:55,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (1/1) ... [2023-11-28 23:38:55,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:38:55,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:38:55,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:38:55,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:38:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:38:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:38:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 23:38:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-28 23:38:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-28 23:38:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 23:38:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:38:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-28 23:38:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-28 23:38:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:38:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:38:55,636 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:38:55,765 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:38:55,767 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:38:55,993 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:38:56,017 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:38:56,017 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 23:38:56,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:38:56 BoogieIcfgContainer [2023-11-28 23:38:56,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:38:56,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:38:56,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:38:56,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:38:56,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:38:54" (1/3) ... [2023-11-28 23:38:56,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7990f944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:38:56, skipping insertion in model container [2023-11-28 23:38:56,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:55" (2/3) ... [2023-11-28 23:38:56,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7990f944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:38:56, skipping insertion in model container [2023-11-28 23:38:56,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:38:56" (3/3) ... [2023-11-28 23:38:56,029 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2023-11-28 23:38:56,038 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:38:56,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:38:56,049 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-28 23:38:56,049 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:38:56,116 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-28 23:38:56,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 104 transitions, 212 flow [2023-11-28 23:38:56,206 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2023-11-28 23:38:56,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:38:56,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 103 events. 4/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 85 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-11-28 23:38:56,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 104 transitions, 212 flow [2023-11-28 23:38:56,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 103 transitions, 209 flow [2023-11-28 23:38:56,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:38:56,235 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;@789458f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:38:56,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-28 23:38:56,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:38:56,252 INFO L124 PetriNetUnfolderBase]: 4/54 cut-off events. [2023-11-28 23:38:56,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:38:56,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:38:56,253 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] [2023-11-28 23:38:56,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:38:56,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:38:56,259 INFO L85 PathProgramCache]: Analyzing trace with hash -687642946, now seen corresponding path program 1 times [2023-11-28 23:38:56,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:38:56,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483579190] [2023-11-28 23:38:56,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:56,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:38:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:56,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:38:56,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483579190] [2023-11-28 23:38:56,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483579190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:38:56,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:38:56,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:38:56,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364071429] [2023-11-28 23:38:56,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:38:56,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:38:56,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:38:56,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:38:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:38:56,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 104 [2023-11-28 23:38:56,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:56,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:38:56,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 104 [2023-11-28 23:38:56,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:38:56,676 INFO L124 PetriNetUnfolderBase]: 7/168 cut-off events. [2023-11-28 23:38:56,677 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:38:56,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 168 events. 7/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 6 based on Foata normal form. 5/161 useless extension candidates. Maximal degree in co-relation 150. Up to 24 conditions per place. [2023-11-28 23:38:56,680 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 10 selfloop transitions, 2 changer transitions 1/101 dead transitions. [2023-11-28 23:38:56,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 229 flow [2023-11-28 23:38:56,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:38:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:38:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-11-28 23:38:56,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9198717948717948 [2023-11-28 23:38:56,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-11-28 23:38:56,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-11-28 23:38:56,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:38:56,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-11-28 23:38:56,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:56,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:56,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:56,713 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 209 flow. Second operand 3 states and 287 transitions. [2023-11-28 23:38:56,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 229 flow [2023-11-28 23:38:56,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 101 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:38:56,723 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 212 flow [2023-11-28 23:38:56,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2023-11-28 23:38:56,727 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2023-11-28 23:38:56,728 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 212 flow [2023-11-28 23:38:56,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:56,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:38:56,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:38:56,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:38:56,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:38:56,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:38:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash 837473170, now seen corresponding path program 1 times [2023-11-28 23:38:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:38:56,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426295147] [2023-11-28 23:38:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:56,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:38:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:56,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:38:56,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426295147] [2023-11-28 23:38:56,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426295147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:38:56,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286506415] [2023-11-28 23:38:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:56,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:56,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:38:56,889 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:38:56,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:38:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:56,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:38:56,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:38:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:57,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:38:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:57,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286506415] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:38:57,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:38:57,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-28 23:38:57,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878977128] [2023-11-28 23:38:57,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:38:57,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:38:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:38:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:38:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:38:57,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 104 [2023-11-28 23:38:57,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:57,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:38:57,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 104 [2023-11-28 23:38:57,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:38:57,242 INFO L124 PetriNetUnfolderBase]: 7/174 cut-off events. [2023-11-28 23:38:57,242 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:38:57,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 174 events. 7/174 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 335 event pairs, 6 based on Foata normal form. 2/165 useless extension candidates. Maximal degree in co-relation 197. Up to 24 conditions per place. [2023-11-28 23:38:57,244 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 14 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2023-11-28 23:38:57,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 108 transitions, 276 flow [2023-11-28 23:38:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:38:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:38:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 808 transitions. [2023-11-28 23:38:57,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2023-11-28 23:38:57,249 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 808 transitions. [2023-11-28 23:38:57,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 808 transitions. [2023-11-28 23:38:57,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:38:57,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 808 transitions. [2023-11-28 23:38:57,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.77777777777777) internal successors, (808), 9 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:57,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:57,260 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:57,260 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 212 flow. Second operand 9 states and 808 transitions. [2023-11-28 23:38:57,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 108 transitions, 276 flow [2023-11-28 23:38:57,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 108 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:38:57,264 INFO L231 Difference]: Finished difference. Result has 114 places, 106 transitions, 260 flow [2023-11-28 23:38:57,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=260, PETRI_PLACES=114, PETRI_TRANSITIONS=106} [2023-11-28 23:38:57,265 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 11 predicate places. [2023-11-28 23:38:57,266 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 106 transitions, 260 flow [2023-11-28 23:38:57,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:57,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:38:57,267 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:38:57,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-28 23:38:57,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:57,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:38:57,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:38:57,473 INFO L85 PathProgramCache]: Analyzing trace with hash 863944466, now seen corresponding path program 2 times [2023-11-28 23:38:57,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:38:57,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499127074] [2023-11-28 23:38:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:57,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:38:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:57,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:38:57,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499127074] [2023-11-28 23:38:57,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499127074] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:38:57,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652733412] [2023-11-28 23:38:57,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:38:57,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:57,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:38:57,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:38:57,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:38:57,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:38:57,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:38:57,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:38:57,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:38:57,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-28 23:38:57,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-28 23:38:57,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:38:57,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-11-28 23:38:57,874 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:38:57,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-28 23:38:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-28 23:38:57,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:38:57,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652733412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:38:57,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:38:57,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-11-28 23:38:57,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425884636] [2023-11-28 23:38:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:38:57,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:38:57,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:38:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:38:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:38:58,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 104 [2023-11-28 23:38:58,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 106 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:58,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:38:58,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 104 [2023-11-28 23:38:58,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:38:58,382 INFO L124 PetriNetUnfolderBase]: 129/601 cut-off events. [2023-11-28 23:38:58,383 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-28 23:38:58,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 601 events. 129/601 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3541 event pairs, 58 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 877. Up to 178 conditions per place. [2023-11-28 23:38:58,388 INFO L140 encePairwiseOnDemand]: 93/104 looper letters, 43 selfloop transitions, 22 changer transitions 0/147 dead transitions. [2023-11-28 23:38:58,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 147 transitions, 472 flow [2023-11-28 23:38:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:38:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:38:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 528 transitions. [2023-11-28 23:38:58,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2023-11-28 23:38:58,391 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 528 transitions. [2023-11-28 23:38:58,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 528 transitions. [2023-11-28 23:38:58,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:38:58,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 528 transitions. [2023-11-28 23:38:58,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:58,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 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) [2023-11-28 23:38:58,397 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 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) [2023-11-28 23:38:58,397 INFO L175 Difference]: Start difference. First operand has 114 places, 106 transitions, 260 flow. Second operand 6 states and 528 transitions. [2023-11-28 23:38:58,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 147 transitions, 472 flow [2023-11-28 23:38:58,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 147 transitions, 466 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-28 23:38:58,403 INFO L231 Difference]: Finished difference. Result has 122 places, 128 transitions, 400 flow [2023-11-28 23:38:58,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=400, PETRI_PLACES=122, PETRI_TRANSITIONS=128} [2023-11-28 23:38:58,404 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 19 predicate places. [2023-11-28 23:38:58,405 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 128 transitions, 400 flow [2023-11-28 23:38:58,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:58,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:38:58,406 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:38:58,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:38:58,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-28 23:38:58,609 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:38:58,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:38:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash -766604311, now seen corresponding path program 1 times [2023-11-28 23:38:58,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:38:58,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948733182] [2023-11-28 23:38:58,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:58,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:38:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:58,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:38:58,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948733182] [2023-11-28 23:38:58,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948733182] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:38:58,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599626532] [2023-11-28 23:38:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:58,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:58,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:38:58,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:38:58,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:38:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:58,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:38:58,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:38:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:58,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:38:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:59,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599626532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:38:59,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:38:59,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-28 23:38:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558102551] [2023-11-28 23:38:59,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:38:59,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 23:38:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:38:59,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 23:38:59,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:38:59,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 104 [2023-11-28 23:38:59,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 128 transitions, 400 flow. Second operand has 18 states, 18 states have (on average 89.0) internal successors, (1602), 18 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:59,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:38:59,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 104 [2023-11-28 23:38:59,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:38:59,363 INFO L124 PetriNetUnfolderBase]: 41/452 cut-off events. [2023-11-28 23:38:59,364 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-28 23:38:59,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 452 events. 41/452 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2304 event pairs, 16 based on Foata normal form. 4/429 useless extension candidates. Maximal degree in co-relation 634. Up to 55 conditions per place. [2023-11-28 23:38:59,368 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 18 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2023-11-28 23:38:59,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 146 transitions, 566 flow [2023-11-28 23:38:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 23:38:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-28 23:38:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1870 transitions. [2023-11-28 23:38:59,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8562271062271062 [2023-11-28 23:38:59,377 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1870 transitions. [2023-11-28 23:38:59,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1870 transitions. [2023-11-28 23:38:59,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:38:59,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1870 transitions. [2023-11-28 23:38:59,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.04761904761905) internal successors, (1870), 21 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:59,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 104.0) internal successors, (2288), 22 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:59,390 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 104.0) internal successors, (2288), 22 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:59,390 INFO L175 Difference]: Start difference. First operand has 122 places, 128 transitions, 400 flow. Second operand 21 states and 1870 transitions. [2023-11-28 23:38:59,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 146 transitions, 566 flow [2023-11-28 23:38:59,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 146 transitions, 566 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:38:59,398 INFO L231 Difference]: Finished difference. Result has 147 places, 141 transitions, 530 flow [2023-11-28 23:38:59,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=530, PETRI_PLACES=147, PETRI_TRANSITIONS=141} [2023-11-28 23:38:59,399 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 44 predicate places. [2023-11-28 23:38:59,399 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 141 transitions, 530 flow [2023-11-28 23:38:59,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 89.0) internal successors, (1602), 18 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:59,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:38:59,401 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:38:59,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:38:59,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:59,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:38:59,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:38:59,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1479130391, now seen corresponding path program 2 times [2023-11-28 23:38:59,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:38:59,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008507894] [2023-11-28 23:38:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:59,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:38:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:59,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:38:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008507894] [2023-11-28 23:38:59,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008507894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:38:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354869166] [2023-11-28 23:38:59,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:38:59,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:59,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:38:59,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:38:59,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:39:00,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:39:00,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:39:00,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:39:00,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:00,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-28 23:39:00,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-28 23:39:00,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:39:00,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-11-28 23:39:00,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:39:00,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-28 23:39:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-28 23:39:00,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:39:00,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354869166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:00,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:39:00,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2023-11-28 23:39:00,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110201323] [2023-11-28 23:39:00,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:00,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:39:00,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:00,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:39:00,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-28 23:39:00,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 104 [2023-11-28 23:39:00,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 141 transitions, 530 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:00,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:39:00,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 104 [2023-11-28 23:39:00,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:39:00,734 INFO L124 PetriNetUnfolderBase]: 306/1290 cut-off events. [2023-11-28 23:39:00,734 INFO L125 PetriNetUnfolderBase]: For 282/292 co-relation queries the response was YES. [2023-11-28 23:39:00,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 1290 events. 306/1290 cut-off events. For 282/292 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9192 event pairs, 116 based on Foata normal form. 5/1182 useless extension candidates. Maximal degree in co-relation 2319. Up to 464 conditions per place. [2023-11-28 23:39:00,744 INFO L140 encePairwiseOnDemand]: 89/104 looper letters, 72 selfloop transitions, 36 changer transitions 2/198 dead transitions. [2023-11-28 23:39:00,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 198 transitions, 902 flow [2023-11-28 23:39:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:39:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:39:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 514 transitions. [2023-11-28 23:39:00,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8237179487179487 [2023-11-28 23:39:00,746 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 514 transitions. [2023-11-28 23:39:00,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 514 transitions. [2023-11-28 23:39:00,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:39:00,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 514 transitions. [2023-11-28 23:39:00,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:00,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 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) [2023-11-28 23:39:00,751 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 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) [2023-11-28 23:39:00,751 INFO L175 Difference]: Start difference. First operand has 147 places, 141 transitions, 530 flow. Second operand 6 states and 514 transitions. [2023-11-28 23:39:00,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 198 transitions, 902 flow [2023-11-28 23:39:00,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 198 transitions, 878 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-28 23:39:00,761 INFO L231 Difference]: Finished difference. Result has 150 places, 173 transitions, 758 flow [2023-11-28 23:39:00,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=758, PETRI_PLACES=150, PETRI_TRANSITIONS=173} [2023-11-28 23:39:00,762 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 47 predicate places. [2023-11-28 23:39:00,762 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 173 transitions, 758 flow [2023-11-28 23:39:00,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:00,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:39:00,763 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:39:00,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:39:00,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:00,964 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:39:00,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:00,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1386689862, now seen corresponding path program 1 times [2023-11-28 23:39:00,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106666558] [2023-11-28 23:39:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:00,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:39:01,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:01,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106666558] [2023-11-28 23:39:01,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106666558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:39:01,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65347286] [2023-11-28 23:39:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:01,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:01,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:01,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:01,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:39:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:01,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 23:39:01,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:39:01,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:39:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:39:01,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65347286] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:39:01,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:39:01,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-28 23:39:01,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078203143] [2023-11-28 23:39:01,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:39:01,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 23:39:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 23:39:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:39:01,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 104 [2023-11-28 23:39:01,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 173 transitions, 758 flow. Second operand has 23 states, 23 states have (on average 89.08695652173913) internal successors, (2049), 23 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:01,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:39:01,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 104 [2023-11-28 23:39:01,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:39:02,181 INFO L124 PetriNetUnfolderBase]: 120/882 cut-off events. [2023-11-28 23:39:02,181 INFO L125 PetriNetUnfolderBase]: For 412/412 co-relation queries the response was YES. [2023-11-28 23:39:02,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 882 events. 120/882 cut-off events. For 412/412 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6007 event pairs, 33 based on Foata normal form. 3/826 useless extension candidates. Maximal degree in co-relation 1563. Up to 134 conditions per place. [2023-11-28 23:39:02,188 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 21 selfloop transitions, 30 changer transitions 0/190 dead transitions. [2023-11-28 23:39:02,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 190 transitions, 982 flow [2023-11-28 23:39:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-28 23:39:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-28 23:39:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2664 transitions. [2023-11-28 23:39:02,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8538461538461538 [2023-11-28 23:39:02,199 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2664 transitions. [2023-11-28 23:39:02,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2664 transitions. [2023-11-28 23:39:02,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:39:02,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2664 transitions. [2023-11-28 23:39:02,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 88.8) internal successors, (2664), 30 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:02,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 104.0) internal successors, (3224), 31 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:02,220 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 104.0) internal successors, (3224), 31 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:02,220 INFO L175 Difference]: Start difference. First operand has 150 places, 173 transitions, 758 flow. Second operand 30 states and 2664 transitions. [2023-11-28 23:39:02,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 190 transitions, 982 flow [2023-11-28 23:39:02,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 190 transitions, 958 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-28 23:39:02,232 INFO L231 Difference]: Finished difference. Result has 182 places, 183 transitions, 886 flow [2023-11-28 23:39:02,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=886, PETRI_PLACES=182, PETRI_TRANSITIONS=183} [2023-11-28 23:39:02,233 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 79 predicate places. [2023-11-28 23:39:02,234 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 183 transitions, 886 flow [2023-11-28 23:39:02,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 89.08695652173913) internal successors, (2049), 23 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:02,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:39:02,235 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:39:02,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-28 23:39:02,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:02,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:39:02,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:02,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1979012466, now seen corresponding path program 2 times [2023-11-28 23:39:02,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:02,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755061309] [2023-11-28 23:39:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:02,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-28 23:39:02,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:02,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755061309] [2023-11-28 23:39:02,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755061309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:02,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:39:02,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656115653] [2023-11-28 23:39:02,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:02,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:39:02,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:02,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:39:02,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:39:03,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2023-11-28 23:39:03,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 183 transitions, 886 flow. Second operand has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:03,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:39:03,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2023-11-28 23:39:03,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:39:03,424 INFO L124 PetriNetUnfolderBase]: 300/1404 cut-off events. [2023-11-28 23:39:03,424 INFO L125 PetriNetUnfolderBase]: For 878/918 co-relation queries the response was YES. [2023-11-28 23:39:03,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3238 conditions, 1404 events. 300/1404 cut-off events. For 878/918 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10564 event pairs, 66 based on Foata normal form. 10/1367 useless extension candidates. Maximal degree in co-relation 3019. Up to 443 conditions per place. [2023-11-28 23:39:03,432 INFO L140 encePairwiseOnDemand]: 93/104 looper letters, 79 selfloop transitions, 49 changer transitions 0/249 dead transitions. [2023-11-28 23:39:03,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 249 transitions, 1441 flow [2023-11-28 23:39:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:39:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:39:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 538 transitions. [2023-11-28 23:39:03,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8621794871794872 [2023-11-28 23:39:03,435 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 538 transitions. [2023-11-28 23:39:03,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 538 transitions. [2023-11-28 23:39:03,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:39:03,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 538 transitions. [2023-11-28 23:39:03,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:03,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 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) [2023-11-28 23:39:03,439 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 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) [2023-11-28 23:39:03,439 INFO L175 Difference]: Start difference. First operand has 182 places, 183 transitions, 886 flow. Second operand 6 states and 538 transitions. [2023-11-28 23:39:03,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 249 transitions, 1441 flow [2023-11-28 23:39:03,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 249 transitions, 1395 flow, removed 5 selfloop flow, removed 18 redundant places. [2023-11-28 23:39:03,449 INFO L231 Difference]: Finished difference. Result has 173 places, 224 transitions, 1256 flow [2023-11-28 23:39:03,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1256, PETRI_PLACES=173, PETRI_TRANSITIONS=224} [2023-11-28 23:39:03,450 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 70 predicate places. [2023-11-28 23:39:03,450 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 224 transitions, 1256 flow [2023-11-28 23:39:03,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:03,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:39:03,451 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:39:03,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 23:39:03,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:39:03,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:03,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1137619337, now seen corresponding path program 1 times [2023-11-28 23:39:03,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:03,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736523076] [2023-11-28 23:39:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:03,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-28 23:39:03,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:03,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736523076] [2023-11-28 23:39:03,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736523076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:03,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:03,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:39:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16136533] [2023-11-28 23:39:03,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:03,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:39:03,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:03,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:39:03,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:39:03,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 104 [2023-11-28 23:39:03,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 224 transitions, 1256 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:03,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:39:03,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 104 [2023-11-28 23:39:03,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:39:04,457 INFO L124 PetriNetUnfolderBase]: 569/2232 cut-off events. [2023-11-28 23:39:04,457 INFO L125 PetriNetUnfolderBase]: For 2427/2484 co-relation queries the response was YES. [2023-11-28 23:39:04,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5862 conditions, 2232 events. 569/2232 cut-off events. For 2427/2484 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18275 event pairs, 130 based on Foata normal form. 12/2158 useless extension candidates. Maximal degree in co-relation 5660. Up to 803 conditions per place. [2023-11-28 23:39:04,474 INFO L140 encePairwiseOnDemand]: 89/104 looper letters, 118 selfloop transitions, 78 changer transitions 11/318 dead transitions. [2023-11-28 23:39:04,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 318 transitions, 2194 flow [2023-11-28 23:39:04,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:39:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:39:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 524 transitions. [2023-11-28 23:39:04,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8397435897435898 [2023-11-28 23:39:04,477 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 524 transitions. [2023-11-28 23:39:04,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 524 transitions. [2023-11-28 23:39:04,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:39:04,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 524 transitions. [2023-11-28 23:39:04,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:04,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 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) [2023-11-28 23:39:04,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 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) [2023-11-28 23:39:04,482 INFO L175 Difference]: Start difference. First operand has 173 places, 224 transitions, 1256 flow. Second operand 6 states and 524 transitions. [2023-11-28 23:39:04,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 318 transitions, 2194 flow [2023-11-28 23:39:04,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 318 transitions, 2192 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-28 23:39:04,505 INFO L231 Difference]: Finished difference. Result has 182 places, 272 transitions, 1860 flow [2023-11-28 23:39:04,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1860, PETRI_PLACES=182, PETRI_TRANSITIONS=272} [2023-11-28 23:39:04,506 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 79 predicate places. [2023-11-28 23:39:04,506 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 272 transitions, 1860 flow [2023-11-28 23:39:04,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:04,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:39:04,507 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:39:04,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 23:39:04,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:39:04,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash -779311232, now seen corresponding path program 1 times [2023-11-28 23:39:04,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:04,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619753292] [2023-11-28 23:39:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:04,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-28 23:39:05,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:05,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619753292] [2023-11-28 23:39:05,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619753292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:05,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:05,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:39:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701651758] [2023-11-28 23:39:05,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:39:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:39:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:39:05,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2023-11-28 23:39:05,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 272 transitions, 1860 flow. Second operand has 10 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:05,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:39:05,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2023-11-28 23:39:05,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:39:07,592 INFO L124 PetriNetUnfolderBase]: 1231/4584 cut-off events. [2023-11-28 23:39:07,593 INFO L125 PetriNetUnfolderBase]: For 9269/9510 co-relation queries the response was YES. [2023-11-28 23:39:07,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14457 conditions, 4584 events. 1231/4584 cut-off events. For 9269/9510 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 43935 event pairs, 132 based on Foata normal form. 159/4691 useless extension candidates. Maximal degree in co-relation 14239. Up to 893 conditions per place. [2023-11-28 23:39:07,623 INFO L140 encePairwiseOnDemand]: 82/104 looper letters, 363 selfloop transitions, 78 changer transitions 91/638 dead transitions. [2023-11-28 23:39:07,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 638 transitions, 5979 flow [2023-11-28 23:39:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:39:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-28 23:39:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1132 transitions. [2023-11-28 23:39:07,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7774725274725275 [2023-11-28 23:39:07,627 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1132 transitions. [2023-11-28 23:39:07,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1132 transitions. [2023-11-28 23:39:07,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:39:07,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1132 transitions. [2023-11-28 23:39:07,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 80.85714285714286) internal successors, (1132), 14 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:07,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 104.0) internal successors, (1560), 15 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:07,635 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 104.0) internal successors, (1560), 15 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:07,635 INFO L175 Difference]: Start difference. First operand has 182 places, 272 transitions, 1860 flow. Second operand 14 states and 1132 transitions. [2023-11-28 23:39:07,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 638 transitions, 5979 flow [2023-11-28 23:39:07,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 638 transitions, 5893 flow, removed 43 selfloop flow, removed 0 redundant places. [2023-11-28 23:39:07,686 INFO L231 Difference]: Finished difference. Result has 206 places, 345 transitions, 2899 flow [2023-11-28 23:39:07,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2899, PETRI_PLACES=206, PETRI_TRANSITIONS=345} [2023-11-28 23:39:07,687 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 103 predicate places. [2023-11-28 23:39:07,688 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 345 transitions, 2899 flow [2023-11-28 23:39:07,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:07,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:39:07,688 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:39:07,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 23:39:07,689 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:39:07,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:07,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2121615540, now seen corresponding path program 2 times [2023-11-28 23:39:07,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:07,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267458947] [2023-11-28 23:39:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:07,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-28 23:39:08,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:08,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267458947] [2023-11-28 23:39:08,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267458947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:08,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:08,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 23:39:08,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545679885] [2023-11-28 23:39:08,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:08,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:39:08,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:08,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:39:08,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:39:09,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2023-11-28 23:39:09,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 345 transitions, 2899 flow. Second operand has 11 states, 11 states have (on average 69.9090909090909) internal successors, (769), 11 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:09,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:39:09,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2023-11-28 23:39:09,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:39:10,915 INFO L124 PetriNetUnfolderBase]: 1278/4799 cut-off events. [2023-11-28 23:39:10,915 INFO L125 PetriNetUnfolderBase]: For 14513/14801 co-relation queries the response was YES. [2023-11-28 23:39:10,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17563 conditions, 4799 events. 1278/4799 cut-off events. For 14513/14801 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 47407 event pairs, 264 based on Foata normal form. 210/4950 useless extension candidates. Maximal degree in co-relation 17334. Up to 1353 conditions per place. [2023-11-28 23:39:10,952 INFO L140 encePairwiseOnDemand]: 84/104 looper letters, 194 selfloop transitions, 144 changer transitions 85/529 dead transitions. [2023-11-28 23:39:10,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 529 transitions, 5359 flow [2023-11-28 23:39:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:39:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-28 23:39:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1189 transitions. [2023-11-28 23:39:10,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7621794871794871 [2023-11-28 23:39:10,957 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1189 transitions. [2023-11-28 23:39:10,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1189 transitions. [2023-11-28 23:39:10,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:39:10,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1189 transitions. [2023-11-28 23:39:10,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 79.26666666666667) internal successors, (1189), 15 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:10,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:10,964 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:10,965 INFO L175 Difference]: Start difference. First operand has 206 places, 345 transitions, 2899 flow. Second operand 15 states and 1189 transitions. [2023-11-28 23:39:10,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 529 transitions, 5359 flow [2023-11-28 23:39:11,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 529 transitions, 5353 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-28 23:39:11,046 INFO L231 Difference]: Finished difference. Result has 221 places, 359 transitions, 3364 flow [2023-11-28 23:39:11,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3364, PETRI_PLACES=221, PETRI_TRANSITIONS=359} [2023-11-28 23:39:11,047 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 118 predicate places. [2023-11-28 23:39:11,047 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 359 transitions, 3364 flow [2023-11-28 23:39:11,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.9090909090909) internal successors, (769), 11 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:11,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:39:11,048 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:39:11,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 23:39:11,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:39:11,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1713390294, now seen corresponding path program 3 times [2023-11-28 23:39:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:11,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458317052] [2023-11-28 23:39:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:11,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-28 23:39:11,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:11,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458317052] [2023-11-28 23:39:11,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458317052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:11,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:11,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:39:11,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268512336] [2023-11-28 23:39:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:11,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:39:11,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:39:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:39:12,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2023-11-28 23:39:12,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 359 transitions, 3364 flow. Second operand has 10 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:12,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:39:12,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2023-11-28 23:39:12,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:39:14,510 INFO L124 PetriNetUnfolderBase]: 2252/7758 cut-off events. [2023-11-28 23:39:14,511 INFO L125 PetriNetUnfolderBase]: For 35710/36166 co-relation queries the response was YES. [2023-11-28 23:39:14,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32545 conditions, 7758 events. 2252/7758 cut-off events. For 35710/36166 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 83043 event pairs, 421 based on Foata normal form. 254/7916 useless extension candidates. Maximal degree in co-relation 32312. Up to 1447 conditions per place. [2023-11-28 23:39:14,563 INFO L140 encePairwiseOnDemand]: 84/104 looper letters, 453 selfloop transitions, 154 changer transitions 74/787 dead transitions. [2023-11-28 23:39:14,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 787 transitions, 9408 flow [2023-11-28 23:39:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:39:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-28 23:39:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1184 transitions. [2023-11-28 23:39:14,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7589743589743589 [2023-11-28 23:39:14,566 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1184 transitions. [2023-11-28 23:39:14,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1184 transitions. [2023-11-28 23:39:14,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:39:14,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1184 transitions. [2023-11-28 23:39:14,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 78.93333333333334) internal successors, (1184), 15 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:14,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:14,571 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:14,571 INFO L175 Difference]: Start difference. First operand has 221 places, 359 transitions, 3364 flow. Second operand 15 states and 1184 transitions. [2023-11-28 23:39:14,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 787 transitions, 9408 flow [2023-11-28 23:39:14,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 787 transitions, 9006 flow, removed 38 selfloop flow, removed 8 redundant places. [2023-11-28 23:39:14,816 INFO L231 Difference]: Finished difference. Result has 236 places, 454 transitions, 5107 flow [2023-11-28 23:39:14,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5107, PETRI_PLACES=236, PETRI_TRANSITIONS=454} [2023-11-28 23:39:14,817 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 133 predicate places. [2023-11-28 23:39:14,817 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 454 transitions, 5107 flow [2023-11-28 23:39:14,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:14,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:39:14,818 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:39:14,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 23:39:14,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:39:14,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:14,818 INFO L85 PathProgramCache]: Analyzing trace with hash 178852370, now seen corresponding path program 4 times [2023-11-28 23:39:14,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:14,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599419886] [2023-11-28 23:39:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:14,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:36,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:36,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599419886] [2023-11-28 23:41:36,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599419886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:36,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691952649] [2023-11-28 23:41:36,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 23:41:36,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:36,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:36,495 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:36,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:41:36,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 23:41:36,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:41:36,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-28 23:41:36,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:36,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-11-28 23:41:36,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-28 23:41:36,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-28 23:41:36,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-11-28 23:41:37,147 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:41:37,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-11-28 23:41:37,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:41:37,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-28 23:41:37,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 80 [2023-11-28 23:41:37,267 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-11-28 23:41:37,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 65 treesize of output 84 [2023-11-28 23:41:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-28 23:41:37,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:38,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2023-11-28 23:41:38,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-11-28 23:41:38,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2023-11-28 23:41:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-28 23:41:38,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691952649] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:38,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:41:38,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [32, 25] total 45 [2023-11-28 23:41:38,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110810198] [2023-11-28 23:41:38,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:38,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:41:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:41:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1893, Unknown=0, NotChecked=0, Total=2070 [2023-11-28 23:41:38,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 104 [2023-11-28 23:41:38,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 454 transitions, 5107 flow. Second operand has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:38,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:41:38,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 104 [2023-11-28 23:41:38,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:41:42,767 INFO L124 PetriNetUnfolderBase]: 3177/10011 cut-off events. [2023-11-28 23:41:42,767 INFO L125 PetriNetUnfolderBase]: For 60036/60900 co-relation queries the response was YES. [2023-11-28 23:41:42,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45947 conditions, 10011 events. 3177/10011 cut-off events. For 60036/60900 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 108030 event pairs, 421 based on Foata normal form. 429/10343 useless extension candidates. Maximal degree in co-relation 45704. Up to 1964 conditions per place. [2023-11-28 23:41:42,846 INFO L140 encePairwiseOnDemand]: 78/104 looper letters, 535 selfloop transitions, 329 changer transitions 78/1038 dead transitions. [2023-11-28 23:41:42,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1038 transitions, 13286 flow [2023-11-28 23:41:42,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 23:41:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-28 23:41:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1481 transitions. [2023-11-28 23:41:42,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7494939271255061 [2023-11-28 23:41:42,849 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1481 transitions. [2023-11-28 23:41:42,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1481 transitions. [2023-11-28 23:41:42,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:41:42,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1481 transitions. [2023-11-28 23:41:42,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 77.94736842105263) internal successors, (1481), 19 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:42,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 104.0) internal successors, (2080), 20 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:42,857 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 104.0) internal successors, (2080), 20 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:42,857 INFO L175 Difference]: Start difference. First operand has 236 places, 454 transitions, 5107 flow. Second operand 19 states and 1481 transitions. [2023-11-28 23:41:42,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1038 transitions, 13286 flow [2023-11-28 23:41:43,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 1038 transitions, 13104 flow, removed 77 selfloop flow, removed 4 redundant places. [2023-11-28 23:41:43,561 INFO L231 Difference]: Finished difference. Result has 263 places, 637 transitions, 8761 flow [2023-11-28 23:41:43,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=5022, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8761, PETRI_PLACES=263, PETRI_TRANSITIONS=637} [2023-11-28 23:41:43,561 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 160 predicate places. [2023-11-28 23:41:43,562 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 637 transitions, 8761 flow [2023-11-28 23:41:43,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:43,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:41:43,562 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:41:43,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:41:43,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637af1c6-8b71-45d6-940c-f38b1c9e33ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:43,763 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:41:43,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:43,763 INFO L85 PathProgramCache]: Analyzing trace with hash 631904292, now seen corresponding path program 5 times [2023-11-28 23:41:43,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:43,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274223419] [2023-11-28 23:41:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:43,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-28 23:41:44,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:44,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274223419] [2023-11-28 23:41:44,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274223419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:44,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:44,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:41:44,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547146152] [2023-11-28 23:41:44,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:44,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:41:44,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:41:44,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:41:45,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2023-11-28 23:41:45,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 637 transitions, 8761 flow. Second operand has 10 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:45,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:41:45,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2023-11-28 23:41:45,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:41:48,342 INFO L124 PetriNetUnfolderBase]: 2834/9500 cut-off events. [2023-11-28 23:41:48,342 INFO L125 PetriNetUnfolderBase]: For 83930/84716 co-relation queries the response was YES. [2023-11-28 23:41:48,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48964 conditions, 9500 events. 2834/9500 cut-off events. For 83930/84716 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 104955 event pairs, 450 based on Foata normal form. 506/9904 useless extension candidates. Maximal degree in co-relation 48708. Up to 1691 conditions per place. [2023-11-28 23:41:48,426 INFO L140 encePairwiseOnDemand]: 86/104 looper letters, 500 selfloop transitions, 330 changer transitions 41/979 dead transitions. [2023-11-28 23:41:48,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 979 transitions, 14643 flow [2023-11-28 23:41:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:41:48,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 23:41:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 964 transitions. [2023-11-28 23:41:48,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7724358974358975 [2023-11-28 23:41:48,429 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 964 transitions. [2023-11-28 23:41:48,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 964 transitions. [2023-11-28 23:41:48,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:41:48,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 964 transitions. [2023-11-28 23:41:48,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 80.33333333333333) internal successors, (964), 12 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:48,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 104.0) internal successors, (1352), 13 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:48,432 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 104.0) internal successors, (1352), 13 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:48,432 INFO L175 Difference]: Start difference. First operand has 263 places, 637 transitions, 8761 flow. Second operand 12 states and 964 transitions. [2023-11-28 23:41:48,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 979 transitions, 14643 flow [2023-11-28 23:41:49,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 979 transitions, 14434 flow, removed 64 selfloop flow, removed 3 redundant places. [2023-11-28 23:41:49,233 INFO L231 Difference]: Finished difference. Result has 276 places, 711 transitions, 10864 flow [2023-11-28 23:41:49,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=8596, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10864, PETRI_PLACES=276, PETRI_TRANSITIONS=711} [2023-11-28 23:41:49,234 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 173 predicate places. [2023-11-28 23:41:49,235 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 711 transitions, 10864 flow [2023-11-28 23:41:49,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:49,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:41:49,235 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:41:49,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 23:41:49,235 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:41:49,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:49,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1051545328, now seen corresponding path program 6 times [2023-11-28 23:41:49,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:49,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448699949] [2023-11-28 23:41:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:49,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-28 23:41:49,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:49,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448699949] [2023-11-28 23:41:49,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448699949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:49,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:49,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:41:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594350151] [2023-11-28 23:41:49,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:49,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:41:49,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:49,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:41:49,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:41:50,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2023-11-28 23:41:50,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 711 transitions, 10864 flow. Second operand has 10 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:50,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:41:50,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2023-11-28 23:41:50,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:41:53,540 INFO L124 PetriNetUnfolderBase]: 2986/10054 cut-off events. [2023-11-28 23:41:53,540 INFO L125 PetriNetUnfolderBase]: For 108534/109309 co-relation queries the response was YES. [2023-11-28 23:41:53,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55508 conditions, 10054 events. 2986/10054 cut-off events. For 108534/109309 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 112590 event pairs, 563 based on Foata normal form. 533/10483 useless extension candidates. Maximal degree in co-relation 55246. Up to 2172 conditions per place. [2023-11-28 23:41:53,609 INFO L140 encePairwiseOnDemand]: 85/104 looper letters, 287 selfloop transitions, 435 changer transitions 45/873 dead transitions. [2023-11-28 23:41:53,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 873 transitions, 14376 flow [2023-11-28 23:41:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:41:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 23:41:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 946 transitions. [2023-11-28 23:41:53,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7580128205128205 [2023-11-28 23:41:53,611 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 946 transitions. [2023-11-28 23:41:53,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 946 transitions. [2023-11-28 23:41:53,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:41:53,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 946 transitions. [2023-11-28 23:41:53,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 78.83333333333333) internal successors, (946), 12 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:53,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 104.0) internal successors, (1352), 13 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:53,616 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 104.0) internal successors, (1352), 13 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:53,616 INFO L175 Difference]: Start difference. First operand has 276 places, 711 transitions, 10864 flow. Second operand 12 states and 946 transitions. [2023-11-28 23:41:53,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 873 transitions, 14376 flow [2023-11-28 23:41:54,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 873 transitions, 14000 flow, removed 57 selfloop flow, removed 7 redundant places. [2023-11-28 23:41:54,447 INFO L231 Difference]: Finished difference. Result has 286 places, 733 transitions, 12405 flow [2023-11-28 23:41:54,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=10586, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=403, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12405, PETRI_PLACES=286, PETRI_TRANSITIONS=733} [2023-11-28 23:41:54,448 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 183 predicate places. [2023-11-28 23:41:54,448 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 733 transitions, 12405 flow [2023-11-28 23:41:54,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:54,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:41:54,449 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:41:54,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 23:41:54,449 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-28 23:41:54,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash 430794092, now seen corresponding path program 1 times [2023-11-28 23:41:54,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:54,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030178944] [2023-11-28 23:41:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:54,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat