./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 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_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl --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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:56,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:56,569 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:24:56,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:56,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:56,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:56,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:56,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:56,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:56,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:56,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:56,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:56,645 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:56,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:56,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:24:56,649 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:56,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:56,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:56,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:56,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:24:56,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:56,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:24:56,653 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:24:56,654 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:56,655 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:56,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:24:56,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:56,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:56,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:56,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:56,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:56,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:56,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:56,662 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:24:56,662 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:56,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:56,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:56,663 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:24:56,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:56,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:56,664 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:56,665 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_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2023-11-12 02:24:57,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:57,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:57,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:57,112 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:57,113 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:57,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-11-12 02:25:00,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:25:01,042 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:25:01,044 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-11-12 02:25:01,066 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/data/2cfecfb64/fe59daf7dd284716aa6611d21e86c887/FLAG5b61ffa48 [2023-11-12 02:25:01,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/data/2cfecfb64/fe59daf7dd284716aa6611d21e86c887 [2023-11-12 02:25:01,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:25:01,103 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:25:01,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:01,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:25:01,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:25:01,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:01" (1/1) ... [2023-11-12 02:25:01,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793a4dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:01, skipping insertion in model container [2023-11-12 02:25:01,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:01" (1/1) ... [2023-11-12 02:25:01,192 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:25:01,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:01,935 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:25:02,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:02,167 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:25:02,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02 WrapperNode [2023-11-12 02:25:02,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:02,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:02,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:25:02,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:25:02,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,294 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 353 [2023-11-12 02:25:02,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:02,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:25:02,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:25:02,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:25:02,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,355 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,389 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:25:02,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:25:02,415 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:25:02,415 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:25:02,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (1/1) ... [2023-11-12 02:25:02,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:02,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:02,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:25:02,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:25:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:25:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:25:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:25:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:25:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:25:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:25:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:25:02,531 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:25:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:25:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:25:02,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:25:02,534 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:25:02,720 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:25:02,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:25:03,523 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:25:03,544 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:25:03,546 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-12 02:25:03,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:03 BoogieIcfgContainer [2023-11-12 02:25:03,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:25:03,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:25:03,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:25:03,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:25:03,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:25:01" (1/3) ... [2023-11-12 02:25:03,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741b1e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:03, skipping insertion in model container [2023-11-12 02:25:03,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:02" (2/3) ... [2023-11-12 02:25:03,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741b1e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:03, skipping insertion in model container [2023-11-12 02:25:03,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:03" (3/3) ... [2023-11-12 02:25:03,566 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2023-11-12 02:25:03,577 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:25:03,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:25:03,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-12 02:25:03,593 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:25:03,739 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:25:03,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 377 transitions, 761 flow [2023-11-12 02:25:04,158 INFO L124 PetriNetUnfolderBase]: 78/602 cut-off events. [2023-11-12 02:25:04,158 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:25:04,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 602 events. 78/602 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3369 event pairs, 0 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 340. Up to 8 conditions per place. [2023-11-12 02:25:04,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 377 transitions, 761 flow [2023-11-12 02:25:04,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 377 transitions, 761 flow [2023-11-12 02:25:04,213 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:25:04,231 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 377 transitions, 761 flow [2023-11-12 02:25:04,236 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 377 transitions, 761 flow [2023-11-12 02:25:04,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 377 transitions, 761 flow [2023-11-12 02:25:04,390 INFO L124 PetriNetUnfolderBase]: 78/602 cut-off events. [2023-11-12 02:25:04,390 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:25:04,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 602 events. 78/602 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3369 event pairs, 0 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 340. Up to 8 conditions per place. [2023-11-12 02:25:04,528 INFO L119 LiptonReduction]: Number of co-enabled transitions 50820 [2023-11-12 02:25:09,521 INFO L134 LiptonReduction]: Checked pairs total: 189412 [2023-11-12 02:25:09,522 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-11-12 02:25:09,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:25:09,573 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;@5093a656, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:25:09,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-12 02:25:09,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:25:09,580 INFO L124 PetriNetUnfolderBase]: 10/38 cut-off events. [2023-11-12 02:25:09,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:25:09,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:09,581 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-12 02:25:09,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:25:09,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:09,589 INFO L85 PathProgramCache]: Analyzing trace with hash 982467427, now seen corresponding path program 1 times [2023-11-12 02:25:09,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:09,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202789450] [2023-11-12 02:25:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:09,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202789450] [2023-11-12 02:25:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202789450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:09,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:09,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:09,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185012004] [2023-11-12 02:25:09,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:09,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:09,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:09,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:09,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:10,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 614 [2023-11-12 02:25:10,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 194 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:10,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 614 [2023-11-12 02:25:10,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:10,644 INFO L124 PetriNetUnfolderBase]: 822/2954 cut-off events. [2023-11-12 02:25:10,644 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:25:10,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 2954 events. 822/2954 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 23989 event pairs, 684 based on Foata normal form. 357/3023 useless extension candidates. Maximal degree in co-relation 4323. Up to 1527 conditions per place. [2023-11-12 02:25:10,672 INFO L140 encePairwiseOnDemand]: 578/614 looper letters, 63 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2023-11-12 02:25:10,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 162 transitions, 461 flow [2023-11-12 02:25:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:10,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1074 transitions. [2023-11-12 02:25:10,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830618892508144 [2023-11-12 02:25:10,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1074 transitions. [2023-11-12 02:25:10,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1074 transitions. [2023-11-12 02:25:10,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:10,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1074 transitions. [2023-11-12 02:25:10,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 614.0) internal successors, (2456), 4 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 614.0) internal successors, (2456), 4 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,745 INFO L175 Difference]: Start difference. First operand has 157 places, 194 transitions, 395 flow. Second operand 3 states and 1074 transitions. [2023-11-12 02:25:10,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 162 transitions, 461 flow [2023-11-12 02:25:10,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:25:10,761 INFO L231 Difference]: Finished difference. Result has 160 places, 162 transitions, 341 flow [2023-11-12 02:25:10,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=160, PETRI_TRANSITIONS=162} [2023-11-12 02:25:10,769 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 3 predicate places. [2023-11-12 02:25:10,770 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 162 transitions, 341 flow [2023-11-12 02:25:10,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:10,772 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:10,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:25:10,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:25:10,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:10,774 INFO L85 PathProgramCache]: Analyzing trace with hash -817306192, now seen corresponding path program 1 times [2023-11-12 02:25:10,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:10,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270768760] [2023-11-12 02:25:10,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:10,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:10,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:10,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270768760] [2023-11-12 02:25:11,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270768760] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:11,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844028764] [2023-11-12 02:25:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:11,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:11,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:11,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:11,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:25:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:11,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:25:11,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:11,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844028764] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:11,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:11,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:25:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153027334] [2023-11-12 02:25:11,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:11,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:25:11,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:11,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:25:11,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:11,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 614 [2023-11-12 02:25:11,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 325.57142857142856) internal successors, (2279), 7 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:11,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:11,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 614 [2023-11-12 02:25:11,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:12,024 INFO L124 PetriNetUnfolderBase]: 822/2957 cut-off events. [2023-11-12 02:25:12,024 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:25:12,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2957 events. 822/2957 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 23990 event pairs, 684 based on Foata normal form. 0/2669 useless extension candidates. Maximal degree in co-relation 4491. Up to 1527 conditions per place. [2023-11-12 02:25:12,050 INFO L140 encePairwiseOnDemand]: 611/614 looper letters, 63 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2023-11-12 02:25:12,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 165 transitions, 489 flow [2023-11-12 02:25:12,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2015 transitions. [2023-11-12 02:25:12,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469598262757872 [2023-11-12 02:25:12,063 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2015 transitions. [2023-11-12 02:25:12,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2015 transitions. [2023-11-12 02:25:12,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:12,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2015 transitions. [2023-11-12 02:25:12,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 335.8333333333333) internal successors, (2015), 6 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,095 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,095 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 341 flow. Second operand 6 states and 2015 transitions. [2023-11-12 02:25:12,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 165 transitions, 489 flow [2023-11-12 02:25:12,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 165 transitions, 485 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:12,106 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 373 flow [2023-11-12 02:25:12,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=373, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2023-11-12 02:25:12,108 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 10 predicate places. [2023-11-12 02:25:12,108 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 373 flow [2023-11-12 02:25:12,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 325.57142857142856) internal successors, (2279), 7 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:12,111 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-12 02:25:12,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:12,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:12,320 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:25:12,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:12,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1829498531, now seen corresponding path program 2 times [2023-11-12 02:25:12,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:12,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906338094] [2023-11-12 02:25:12,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:12,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:12,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:12,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906338094] [2023-11-12 02:25:12,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906338094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313098448] [2023-11-12 02:25:12,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:25:12,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:12,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:12,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:12,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:25:12,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:25:12,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:25:12,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:25:12,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:12,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313098448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:12,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:12,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-12 02:25:12,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662305632] [2023-11-12 02:25:12,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:12,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:25:12,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:12,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:25:12,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:25:12,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 614 [2023-11-12 02:25:12,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 373 flow. Second operand has 13 states, 13 states have (on average 325.3076923076923) internal successors, (4229), 13 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:12,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 614 [2023-11-12 02:25:12,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:13,395 INFO L124 PetriNetUnfolderBase]: 822/2963 cut-off events. [2023-11-12 02:25:13,395 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-12 02:25:13,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4540 conditions, 2963 events. 822/2963 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 24059 event pairs, 684 based on Foata normal form. 6/2682 useless extension candidates. Maximal degree in co-relation 4482. Up to 1527 conditions per place. [2023-11-12 02:25:13,416 INFO L140 encePairwiseOnDemand]: 611/614 looper letters, 63 selfloop transitions, 11 changer transitions 0/171 dead transitions. [2023-11-12 02:25:13,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 171 transitions, 557 flow [2023-11-12 02:25:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:25:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:25:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3968 transitions. [2023-11-12 02:25:13,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5385450597176982 [2023-11-12 02:25:13,431 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3968 transitions. [2023-11-12 02:25:13,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3968 transitions. [2023-11-12 02:25:13,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:13,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3968 transitions. [2023-11-12 02:25:13,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 330.6666666666667) internal successors, (3968), 12 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:13,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 614.0) internal successors, (7982), 13 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:13,475 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 614.0) internal successors, (7982), 13 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:13,476 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 373 flow. Second operand 12 states and 3968 transitions. [2023-11-12 02:25:13,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 171 transitions, 557 flow [2023-11-12 02:25:13,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 543 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:13,485 INFO L231 Difference]: Finished difference. Result has 183 places, 171 transitions, 443 flow [2023-11-12 02:25:13,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=443, PETRI_PLACES=183, PETRI_TRANSITIONS=171} [2023-11-12 02:25:13,488 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2023-11-12 02:25:13,489 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 171 transitions, 443 flow [2023-11-12 02:25:13,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 325.3076923076923) internal successors, (4229), 13 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:13,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:13,494 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-12 02:25:13,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 02:25:13,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:13,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:25:13,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1067342973, now seen corresponding path program 3 times [2023-11-12 02:25:13,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:13,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200635679] [2023-11-12 02:25:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:13,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:25:13,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:25:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:25:13,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:25:13,844 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:25:13,846 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-12 02:25:13,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-12 02:25:13,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-12 02:25:13,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-12 02:25:13,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-12 02:25:13,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-12 02:25:13,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-12 02:25:13,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-12 02:25:13,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-12 02:25:13,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-12 02:25:13,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-12 02:25:13,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-12 02:25:13,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-12 02:25:13,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-12 02:25:13,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-12 02:25:13,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-12 02:25:13,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-12 02:25:13,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-12 02:25:13,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-12 02:25:13,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-12 02:25:13,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-12 02:25:13,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-12 02:25:13,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:25:13,859 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-12 02:25:13,862 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:25:13,863 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:25:13,939 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:25:13,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 489 transitions, 994 flow [2023-11-12 02:25:14,215 INFO L124 PetriNetUnfolderBase]: 126/971 cut-off events. [2023-11-12 02:25:14,215 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:25:14,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 971 events. 126/971 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6218 event pairs, 0 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 604. Up to 12 conditions per place. [2023-11-12 02:25:14,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 489 transitions, 994 flow [2023-11-12 02:25:14,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 430 places, 489 transitions, 994 flow [2023-11-12 02:25:14,259 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:25:14,259 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 430 places, 489 transitions, 994 flow [2023-11-12 02:25:14,262 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 430 places, 489 transitions, 994 flow [2023-11-12 02:25:14,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 489 transitions, 994 flow [2023-11-12 02:25:14,463 INFO L124 PetriNetUnfolderBase]: 126/971 cut-off events. [2023-11-12 02:25:14,463 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:25:14,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 971 events. 126/971 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6218 event pairs, 0 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 604. Up to 12 conditions per place. [2023-11-12 02:25:14,543 INFO L119 LiptonReduction]: Number of co-enabled transitions 128260 [2023-11-12 02:25:20,672 INFO L134 LiptonReduction]: Checked pairs total: 488298 [2023-11-12 02:25:20,673 INFO L136 LiptonReduction]: Total number of compositions: 310 [2023-11-12 02:25:20,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:25:20,681 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;@5093a656, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:25:20,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-12 02:25:20,696 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:25:20,696 INFO L124 PetriNetUnfolderBase]: 26/116 cut-off events. [2023-11-12 02:25:20,696 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:25:20,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:20,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:20,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-12 02:25:20,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:20,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1331769326, now seen corresponding path program 1 times [2023-11-12 02:25:20,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:20,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589993388] [2023-11-12 02:25:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:20,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:20,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:20,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589993388] [2023-11-12 02:25:20,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589993388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:20,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:20,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:20,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657938136] [2023-11-12 02:25:20,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:20,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:20,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:20,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:20,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:20,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 799 [2023-11-12 02:25:20,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 257 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:20,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:20,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 799 [2023-11-12 02:25:20,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:30,301 INFO L124 PetriNetUnfolderBase]: 31138/70964 cut-off events. [2023-11-12 02:25:30,301 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2023-11-12 02:25:30,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115060 conditions, 70964 events. 31138/70964 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 1683. Compared 818310 event pairs, 27108 based on Foata normal form. 9334/72932 useless extension candidates. Maximal degree in co-relation 51463. Up to 43993 conditions per place. [2023-11-12 02:25:31,056 INFO L140 encePairwiseOnDemand]: 753/799 looper letters, 84 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2023-11-12 02:25:31,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 215 transitions, 618 flow [2023-11-12 02:25:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:31,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1393 transitions. [2023-11-12 02:25:31,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811430955360868 [2023-11-12 02:25:31,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1393 transitions. [2023-11-12 02:25:31,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1393 transitions. [2023-11-12 02:25:31,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:31,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1393 transitions. [2023-11-12 02:25:31,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 464.3333333333333) internal successors, (1393), 3 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:31,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:31,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:31,082 INFO L175 Difference]: Start difference. First operand has 209 places, 257 transitions, 530 flow. Second operand 3 states and 1393 transitions. [2023-11-12 02:25:31,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 215 transitions, 618 flow [2023-11-12 02:25:31,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 618 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:25:31,091 INFO L231 Difference]: Finished difference. Result has 212 places, 215 transitions, 456 flow [2023-11-12 02:25:31,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2023-11-12 02:25:31,094 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2023-11-12 02:25:31,094 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 456 flow [2023-11-12 02:25:31,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:31,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:31,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:31,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:25:31,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-12 02:25:31,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:31,098 INFO L85 PathProgramCache]: Analyzing trace with hash 944147115, now seen corresponding path program 1 times [2023-11-12 02:25:31,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:31,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591583310] [2023-11-12 02:25:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:31,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:31,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:31,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591583310] [2023-11-12 02:25:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591583310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:31,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600571545] [2023-11-12 02:25:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:31,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:31,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:31,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:31,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:25:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:31,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:25:31,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:25:31,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:31,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600571545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:31,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:25:31,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-12 02:25:31,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306334565] [2023-11-12 02:25:31,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:31,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:31,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:31,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:31,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:31,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 799 [2023-11-12 02:25:31,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:31,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:31,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 799 [2023-11-12 02:25:31,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:38,894 INFO L124 PetriNetUnfolderBase]: 30503/70084 cut-off events. [2023-11-12 02:25:38,894 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2023-11-12 02:25:39,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114152 conditions, 70084 events. 30503/70084 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 815886 event pairs, 13068 based on Foata normal form. 0/62936 useless extension candidates. Maximal degree in co-relation 114139. Up to 43937 conditions per place. [2023-11-12 02:25:39,354 INFO L140 encePairwiseOnDemand]: 796/799 looper letters, 105 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-11-12 02:25:39,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 236 transitions, 712 flow [2023-11-12 02:25:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1370 transitions. [2023-11-12 02:25:39,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5715477680433876 [2023-11-12 02:25:39,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1370 transitions. [2023-11-12 02:25:39,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1370 transitions. [2023-11-12 02:25:39,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:39,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1370 transitions. [2023-11-12 02:25:39,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.6666666666667) internal successors, (1370), 3 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:39,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:39,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:39,377 INFO L175 Difference]: Start difference. First operand has 212 places, 215 transitions, 456 flow. Second operand 3 states and 1370 transitions. [2023-11-12 02:25:39,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 236 transitions, 712 flow [2023-11-12 02:25:39,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 236 transitions, 708 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:39,386 INFO L231 Difference]: Finished difference. Result has 214 places, 216 transitions, 464 flow [2023-11-12 02:25:39,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=214, PETRI_TRANSITIONS=216} [2023-11-12 02:25:39,390 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 5 predicate places. [2023-11-12 02:25:39,390 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 216 transitions, 464 flow [2023-11-12 02:25:39,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:39,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:39,392 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:39,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:39,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:25:39,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-12 02:25:39,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash -380539492, now seen corresponding path program 1 times [2023-11-12 02:25:39,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:39,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995463718] [2023-11-12 02:25:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:25:39,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995463718] [2023-11-12 02:25:39,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995463718] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049383034] [2023-11-12 02:25:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:39,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:39,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:39,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:39,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9f738b-e9ee-484f-a2fb-4d0b3c7b62d7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:25:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:39,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:25:39,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:25:39,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:25:39,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049383034] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:39,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:39,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:25:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597703147] [2023-11-12 02:25:39,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:39,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:25:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:25:39,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:39,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 799 [2023-11-12 02:25:39,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 216 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 421.7142857142857) internal successors, (2952), 7 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:39,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:39,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 799 [2023-11-12 02:25:39,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand