./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/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_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/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_3d5b824d-bb91-40d1-a65f-98a1b875f536/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 2f28efd84e1dbcbcea7683bca483f8f3b9fbdd333eb36f517b9f12d5bccb885d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:10:48,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:10:49,001 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:10:49,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:10:49,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:10:49,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:10:49,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:10:49,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:10:49,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:10:49,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:10:49,038 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:10:49,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:10:49,039 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:10:49,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:10:49,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:10:49,041 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:10:49,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:10:49,042 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:10:49,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:10:49,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:10:49,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:10:49,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:10:49,045 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:10:49,045 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:10:49,046 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:10:49,046 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:10:49,047 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:10:49,047 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:10:49,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:10:49,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:10:49,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:10:49,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:10:49,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:10:49,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:10:49,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:10:49,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:10:49,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:10:49,072 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:10:49,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:10:49,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:10:49,073 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:10:49,074 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_3d5b824d-bb91-40d1-a65f-98a1b875f536/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f28efd84e1dbcbcea7683bca483f8f3b9fbdd333eb36f517b9f12d5bccb885d [2023-11-12 02:10:49,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:10:49,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:10:49,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:10:49,383 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:10:49,383 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:10:49,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-deagle/floating_read-5.i [2023-11-12 02:10:52,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:10:53,002 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:10:53,003 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/sv-benchmarks/c/pthread-deagle/floating_read-5.i [2023-11-12 02:10:53,025 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/data/07bd0e8e7/842b3b6f50e64ae5bdeb712b357caff3/FLAG5ba6910fe [2023-11-12 02:10:53,041 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/data/07bd0e8e7/842b3b6f50e64ae5bdeb712b357caff3 [2023-11-12 02:10:53,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:10:53,046 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:10:53,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:10:53,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:10:53,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:10:53,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330adfb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53, skipping insertion in model container [2023-11-12 02:10:53,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,123 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:10:53,617 WARN L1577 CHandler]: Possible shadowing of function thread [2023-11-12 02:10:53,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:10:53,655 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:10:53,728 WARN L1577 CHandler]: Possible shadowing of function thread [2023-11-12 02:10:53,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:10:53,778 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:53,778 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:53,788 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:10:53,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53 WrapperNode [2023-11-12 02:10:53,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:10:53,791 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:10:53,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:10:53,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:10:53,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,886 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-11-12 02:10:53,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:10:53,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:10:53,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:10:53,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:10:53,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:10:53,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:10:53,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:10:53,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:10:53,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (1/1) ... [2023-11-12 02:10:53,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:10:53,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:10:54,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:10:54,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:10:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:10:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:10:54,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:10:54,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:10:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:10:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:10:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:10:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-12 02:10:54,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-12 02:10:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:10:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:10:54,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:10:54,070 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 02:10:54,227 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:10:54,230 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:10:54,456 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:10:54,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:10:54,488 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:10:54,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:10:54 BoogieIcfgContainer [2023-11-12 02:10:54,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:10:54,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:10:54,496 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:10:54,500 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:10:54,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:10:53" (1/3) ... [2023-11-12 02:10:54,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcc7d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:10:54, skipping insertion in model container [2023-11-12 02:10:54,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:53" (2/3) ... [2023-11-12 02:10:54,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcc7d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:10:54, skipping insertion in model container [2023-11-12 02:10:54,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:10:54" (3/3) ... [2023-11-12 02:10:54,503 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-5.i [2023-11-12 02:10:54,514 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:10:54,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:10:54,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-12 02:10:54,527 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:10:54,588 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:10:54,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions, 153 flow [2023-11-12 02:10:54,701 INFO L124 PetriNetUnfolderBase]: 9/111 cut-off events. [2023-11-12 02:10:54,701 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:10:54,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 111 events. 9/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 221 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2023-11-12 02:10:54,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 73 transitions, 153 flow [2023-11-12 02:10:54,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 73 transitions, 153 flow [2023-11-12 02:10:54,718 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:10:54,741 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 73 transitions, 153 flow [2023-11-12 02:10:54,752 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 73 transitions, 153 flow [2023-11-12 02:10:54,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions, 153 flow [2023-11-12 02:10:54,836 INFO L124 PetriNetUnfolderBase]: 9/111 cut-off events. [2023-11-12 02:10:54,836 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:10:54,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 111 events. 9/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 221 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2023-11-12 02:10:54,840 INFO L119 LiptonReduction]: Number of co-enabled transitions 528 [2023-11-12 02:10:57,202 INFO L134 LiptonReduction]: Checked pairs total: 750 [2023-11-12 02:10:57,202 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-11-12 02:10:57,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:10:57,225 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;@4780cb91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:10:57,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-12 02:10:57,227 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:10:57,227 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:10:57,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:10:57,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:57,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:10:57,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-12 02:10:57,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:57,234 INFO L85 PathProgramCache]: Analyzing trace with hash 296, now seen corresponding path program 1 times [2023-11-12 02:10:57,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:57,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012422845] [2023-11-12 02:10:57,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:57,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:57,439 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 02:10:57,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:57,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012422845] [2023-11-12 02:10:57,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012422845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:57,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:57,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:10:57,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316102130] [2023-11-12 02:10:57,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:57,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:10:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:57,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:10:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:10:57,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 141 [2023-11-12 02:10:57,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 18 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 02:10:57,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:57,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 141 [2023-11-12 02:10:57,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:57,538 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2023-11-12 02:10:57,539 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:10:57,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 36 events. 7/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 91 event pairs, 6 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 42. Up to 29 conditions per place. [2023-11-12 02:10:57,541 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 6 selfloop transitions, 0 changer transitions 5/14 dead transitions. [2023-11-12 02:10:57,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 14 transitions, 57 flow [2023-11-12 02:10:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:10:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:10:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 139 transitions. [2023-11-12 02:10:57,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2023-11-12 02:10:57,557 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 139 transitions. [2023-11-12 02:10:57,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 139 transitions. [2023-11-12 02:10:57,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:57,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 139 transitions. [2023-11-12 02:10:57,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 02:10:57,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 02:10:57,570 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 02:10:57,572 INFO L175 Difference]: Start difference. First operand has 19 places, 18 transitions, 43 flow. Second operand 2 states and 139 transitions. [2023-11-12 02:10:57,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 14 transitions, 57 flow [2023-11-12 02:10:57,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 57 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:57,577 INFO L231 Difference]: Finished difference. Result has 17 places, 9 transitions, 22 flow [2023-11-12 02:10:57,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=22, PETRI_PLACES=17, PETRI_TRANSITIONS=9} [2023-11-12 02:10:57,583 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-12 02:10:57,584 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 9 transitions, 22 flow [2023-11-12 02:10:57,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 02:10:57,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:57,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:10:57,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:10:57,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-12 02:10:57,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash 293207, now seen corresponding path program 1 times [2023-11-12 02:10:57,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:57,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274771934] [2023-11-12 02:10:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:57,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:57,733 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 02:10:57,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:57,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274771934] [2023-11-12 02:10:57,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274771934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:57,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:57,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:10:57,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167797989] [2023-11-12 02:10:57,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:57,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:57,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:57,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:57,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:57,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 141 [2023-11-12 02:10:57,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 9 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 02:10:57,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:57,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 141 [2023-11-12 02:10:57,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:57,806 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2023-11-12 02:10:57,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:10:57,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 19 events. 3/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 35 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 34. Up to 10 conditions per place. [2023-11-12 02:10:57,808 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 6 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2023-11-12 02:10:57,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 11 transitions, 42 flow [2023-11-12 02:10:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-11-12 02:10:57,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2023-11-12 02:10:57,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-11-12 02:10:57,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-11-12 02:10:57,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:57,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-11-12 02:10:57,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 02:10:57,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 02:10:57,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 02:10:57,830 INFO L175 Difference]: Start difference. First operand has 17 places, 9 transitions, 22 flow. Second operand 3 states and 177 transitions. [2023-11-12 02:10:57,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 11 transitions, 42 flow [2023-11-12 02:10:57,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 11 transitions, 42 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:57,832 INFO L231 Difference]: Finished difference. Result has 16 places, 9 transitions, 30 flow [2023-11-12 02:10:57,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=16, PETRI_TRANSITIONS=9} [2023-11-12 02:10:57,835 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -3 predicate places. [2023-11-12 02:10:57,835 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 9 transitions, 30 flow [2023-11-12 02:10:57,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 02:10:57,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:57,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:10:57,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:10:57,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-12 02:10:57,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:57,842 INFO L85 PathProgramCache]: Analyzing trace with hash 156420576, now seen corresponding path program 1 times [2023-11-12 02:10:57,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:57,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197682488] [2023-11-12 02:10:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:57,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:57,938 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 02:10:57,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:57,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197682488] [2023-11-12 02:10:57,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197682488] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:10:57,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176848779] [2023-11-12 02:10:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:57,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:10:57,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:10:57,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:10:57,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:10:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:58,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:10:58,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:58,048 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 02:10:58,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:10:58,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176848779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:58,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:10:58,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 02:10:58,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684751992] [2023-11-12 02:10:58,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:58,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:58,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:58,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:58,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:10:58,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-11-12 02:10:58,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 9 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 02:10:58,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:58,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-11-12 02:10:58,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:58,109 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2023-11-12 02:10:58,109 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:10:58,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 19 events. 3/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 46. Up to 14 conditions per place. [2023-11-12 02:10:58,110 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 6 selfloop transitions, 2 changer transitions 2/11 dead transitions. [2023-11-12 02:10:58,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 54 flow [2023-11-12 02:10:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-11-12 02:10:58,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-11-12 02:10:58,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-11-12 02:10:58,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-11-12 02:10:58,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:58,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-11-12 02:10:58,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:10:58,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 02:10:58,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 02:10:58,121 INFO L175 Difference]: Start difference. First operand has 16 places, 9 transitions, 30 flow. Second operand 3 states and 188 transitions. [2023-11-12 02:10:58,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 54 flow [2023-11-12 02:10:58,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:10:58,123 INFO L231 Difference]: Finished difference. Result has 17 places, 9 transitions, 36 flow [2023-11-12 02:10:58,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=17, PETRI_TRANSITIONS=9} [2023-11-12 02:10:58,125 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-12 02:10:58,125 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 9 transitions, 36 flow [2023-11-12 02:10:58,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 02:10:58,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:58,126 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:10:58,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:10:58,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-12 02:10:58,332 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-12 02:10:58,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash 156420950, now seen corresponding path program 1 times [2023-11-12 02:10:58,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:58,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542988999] [2023-11-12 02:10:58,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:58,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:10:58,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:10:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:10:58,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:10:58,399 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:10:58,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-12 02:10:58,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2023-11-12 02:10:58,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2023-11-12 02:10:58,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2023-11-12 02:10:58,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2023-11-12 02:10:58,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2023-11-12 02:10:58,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:10:58,403 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-12 02:10:58,405 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:10:58,405 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:10:58,437 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:10:58,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 178 flow [2023-11-12 02:10:58,512 INFO L124 PetriNetUnfolderBase]: 16/190 cut-off events. [2023-11-12 02:10:58,512 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:10:58,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 190 events. 16/190 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 113. Up to 8 conditions per place. [2023-11-12 02:10:58,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 81 transitions, 178 flow [2023-11-12 02:10:58,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 81 transitions, 178 flow [2023-11-12 02:10:58,517 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:10:58,518 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 81 transitions, 178 flow [2023-11-12 02:10:58,518 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 81 transitions, 178 flow [2023-11-12 02:10:58,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 178 flow [2023-11-12 02:10:58,550 INFO L124 PetriNetUnfolderBase]: 16/190 cut-off events. [2023-11-12 02:10:58,550 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:10:58,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 190 events. 16/190 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 113. Up to 8 conditions per place. [2023-11-12 02:10:58,555 INFO L119 LiptonReduction]: Number of co-enabled transitions 1260 [2023-11-12 02:11:00,891 INFO L134 LiptonReduction]: Checked pairs total: 1962 [2023-11-12 02:11:00,892 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-11-12 02:11:00,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:11:00,897 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;@4780cb91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:11:00,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 02:11:00,899 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:11:00,899 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:11:00,899 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:00,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:00,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:11:00,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-12 02:11:00,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:00,901 INFO L85 PathProgramCache]: Analyzing trace with hash 460, now seen corresponding path program 1 times [2023-11-12 02:11:00,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:00,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013835959] [2023-11-12 02:11:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:00,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:00,913 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 02:11:00,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:00,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013835959] [2023-11-12 02:11:00,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013835959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:00,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:00,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:11:00,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416598585] [2023-11-12 02:11:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:00,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:11:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:11:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:11:00,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 156 [2023-11-12 02:11:00,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 02:11:00,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:00,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 156 [2023-11-12 02:11:00,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:00,967 INFO L124 PetriNetUnfolderBase]: 41/118 cut-off events. [2023-11-12 02:11:00,968 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-12 02:11:00,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 118 events. 41/118 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 346 event pairs, 37 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 77. Up to 101 conditions per place. [2023-11-12 02:11:00,969 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 8 selfloop transitions, 0 changer transitions 7/19 dead transitions. [2023-11-12 02:11:00,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 82 flow [2023-11-12 02:11:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:11:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:11:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 151 transitions. [2023-11-12 02:11:00,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2023-11-12 02:11:00,973 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 151 transitions. [2023-11-12 02:11:00,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 151 transitions. [2023-11-12 02:11:00,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:00,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 151 transitions. [2023-11-12 02:11:00,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 02:11:00,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 02:11:00,977 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 02:11:00,977 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 64 flow. Second operand 2 states and 151 transitions. [2023-11-12 02:11:00,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 82 flow [2023-11-12 02:11:00,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 82 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:00,980 INFO L231 Difference]: Finished difference. Result has 23 places, 12 transitions, 34 flow [2023-11-12 02:11:00,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2023-11-12 02:11:00,981 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2023-11-12 02:11:00,982 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 34 flow [2023-11-12 02:11:00,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 02:11:00,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:00,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:11:00,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:11:00,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-12 02:11:00,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash 456013, now seen corresponding path program 1 times [2023-11-12 02:11:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:00,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518089643] [2023-11-12 02:11:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:00,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:01,052 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 02:11:01,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:01,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518089643] [2023-11-12 02:11:01,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518089643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:01,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:01,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:11:01,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546580741] [2023-11-12 02:11:01,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:01,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:01,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:01,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:01,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:01,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-12 02:11:01,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 02:11:01,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:01,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-12 02:11:01,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:01,114 INFO L124 PetriNetUnfolderBase]: 17/56 cut-off events. [2023-11-12 02:11:01,115 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:11:01,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 56 events. 17/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 149 event pairs, 6 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 107. Up to 40 conditions per place. [2023-11-12 02:11:01,116 INFO L140 encePairwiseOnDemand]: 153/156 looper letters, 9 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-11-12 02:11:01,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 62 flow [2023-11-12 02:11:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-11-12 02:11:01,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2023-11-12 02:11:01,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-11-12 02:11:01,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-11-12 02:11:01,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:01,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-11-12 02:11:01,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 02:11:01,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 02:11:01,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 02:11:01,125 INFO L175 Difference]: Start difference. First operand has 23 places, 12 transitions, 34 flow. Second operand 3 states and 192 transitions. [2023-11-12 02:11:01,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 62 flow [2023-11-12 02:11:01,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:01,127 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 46 flow [2023-11-12 02:11:01,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2023-11-12 02:11:01,128 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2023-11-12 02:11:01,128 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 46 flow [2023-11-12 02:11:01,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 02:11:01,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:01,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:01,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:11:01,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-12 02:11:01,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:01,131 INFO L85 PathProgramCache]: Analyzing trace with hash 593023721, now seen corresponding path program 1 times [2023-11-12 02:11:01,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:01,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011943035] [2023-11-12 02:11:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:01,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:01,222 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 02:11:01,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:01,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011943035] [2023-11-12 02:11:01,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011943035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:01,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587362849] [2023-11-12 02:11:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:01,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:01,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:01,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:01,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:11:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:01,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:11:01,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:01,323 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 02:11:01,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:11:01,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587362849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:01,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:11:01,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 02:11:01,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85511328] [2023-11-12 02:11:01,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:01,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:01,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:01,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:01,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:11:01,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 156 [2023-11-12 02:11:01,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 02:11:01,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:01,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 156 [2023-11-12 02:11:01,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:01,366 INFO L124 PetriNetUnfolderBase]: 24/73 cut-off events. [2023-11-12 02:11:01,367 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-12 02:11:01,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 73 events. 24/73 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 219 event pairs, 15 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 164. Up to 53 conditions per place. [2023-11-12 02:11:01,368 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 9 selfloop transitions, 3 changer transitions 2/16 dead transitions. [2023-11-12 02:11:01,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 80 flow [2023-11-12 02:11:01,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2023-11-12 02:11:01,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337606837606838 [2023-11-12 02:11:01,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2023-11-12 02:11:01,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2023-11-12 02:11:01,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:01,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2023-11-12 02:11:01,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 02:11:01,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 02:11:01,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 02:11:01,376 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 46 flow. Second operand 3 states and 203 transitions. [2023-11-12 02:11:01,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 80 flow [2023-11-12 02:11:01,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:01,378 INFO L231 Difference]: Finished difference. Result has 23 places, 14 transitions, 61 flow [2023-11-12 02:11:01,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=23, PETRI_TRANSITIONS=14} [2023-11-12 02:11:01,380 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2023-11-12 02:11:01,380 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 61 flow [2023-11-12 02:11:01,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 02:11:01,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:01,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:01,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:01,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:11:01,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-12 02:11:01,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:01,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1203870851, now seen corresponding path program 1 times [2023-11-12 02:11:01,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:01,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073520947] [2023-11-12 02:11:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:01,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:01,642 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 02:11:01,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073520947] [2023-11-12 02:11:01,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073520947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535756140] [2023-11-12 02:11:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:01,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:01,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:01,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:01,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:11:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:01,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:11:01,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:01,781 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 02:11:01,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:01,808 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 02:11:01,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535756140] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:01,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:01,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:11:01,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084873191] [2023-11-12 02:11:01,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:01,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:11:01,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:11:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:11:01,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 156 [2023-11-12 02:11:01,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 14 transitions, 61 flow. Second operand has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 02:11:01,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:01,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 156 [2023-11-12 02:11:01,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:01,889 INFO L124 PetriNetUnfolderBase]: 12/39 cut-off events. [2023-11-12 02:11:01,889 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-12 02:11:01,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 39 events. 12/39 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 6/45 useless extension candidates. Maximal degree in co-relation 101. Up to 16 conditions per place. [2023-11-12 02:11:01,890 INFO L140 encePairwiseOnDemand]: 153/156 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-11-12 02:11:01,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 82 flow [2023-11-12 02:11:01,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:11:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:11:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2023-11-12 02:11:01,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2023-11-12 02:11:01,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 310 transitions. [2023-11-12 02:11:01,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 310 transitions. [2023-11-12 02:11:01,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:01,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 310 transitions. [2023-11-12 02:11:01,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:11:01,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states 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 02:11:01,898 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states 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 02:11:01,898 INFO L175 Difference]: Start difference. First operand has 23 places, 14 transitions, 61 flow. Second operand 5 states and 310 transitions. [2023-11-12 02:11:01,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 82 flow [2023-11-12 02:11:01,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 15 transitions, 82 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:01,900 INFO L231 Difference]: Finished difference. Result has 23 places, 10 transitions, 46 flow [2023-11-12 02:11:01,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=10} [2023-11-12 02:11:01,901 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2023-11-12 02:11:01,901 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 10 transitions, 46 flow [2023-11-12 02:11:01,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 02:11:01,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:01,902 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:11:01,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:02,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:02,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-12 02:11:02,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1763220354, now seen corresponding path program 1 times [2023-11-12 02:11:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:02,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47793500] [2023-11-12 02:11:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:02,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:11:02,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:11:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:11:02,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:11:02,140 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:11:02,140 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-12 02:11:02,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-12 02:11:02,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-12 02:11:02,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-12 02:11:02,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-12 02:11:02,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-12 02:11:02,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-12 02:11:02,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:11:02,142 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 02:11:02,143 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:11:02,143 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:11:02,161 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:11:02,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 89 transitions, 205 flow [2023-11-12 02:11:02,198 INFO L124 PetriNetUnfolderBase]: 28/318 cut-off events. [2023-11-12 02:11:02,199 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:11:02,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 318 events. 28/318 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 918 event pairs, 1 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 198. Up to 16 conditions per place. [2023-11-12 02:11:02,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 89 transitions, 205 flow [2023-11-12 02:11:02,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 89 transitions, 205 flow [2023-11-12 02:11:02,202 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:11:02,203 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 89 transitions, 205 flow [2023-11-12 02:11:02,203 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 89 transitions, 205 flow [2023-11-12 02:11:02,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 89 transitions, 205 flow [2023-11-12 02:11:02,238 INFO L124 PetriNetUnfolderBase]: 28/318 cut-off events. [2023-11-12 02:11:02,238 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:11:02,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 318 events. 28/318 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 918 event pairs, 1 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 198. Up to 16 conditions per place. [2023-11-12 02:11:02,243 INFO L119 LiptonReduction]: Number of co-enabled transitions 2052 [2023-11-12 02:11:04,334 INFO L134 LiptonReduction]: Checked pairs total: 3087 [2023-11-12 02:11:04,334 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-11-12 02:11:04,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:11:04,336 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;@4780cb91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:11:04,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-12 02:11:04,337 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:11:04,337 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:11:04,338 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:04,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:04,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:11:04,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:11:04,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash 637, now seen corresponding path program 1 times [2023-11-12 02:11:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560336131] [2023-11-12 02:11:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:04,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:04,349 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 02:11:04,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:04,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560336131] [2023-11-12 02:11:04,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560336131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:04,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:04,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:11:04,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896544154] [2023-11-12 02:11:04,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:04,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:11:04,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:04,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:11:04,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:11:04,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 169 [2023-11-12 02:11:04,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 83 flow. Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 02:11:04,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:04,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 169 [2023-11-12 02:11:04,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:04,435 INFO L124 PetriNetUnfolderBase]: 172/375 cut-off events. [2023-11-12 02:11:04,436 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-12 02:11:04,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 375 events. 172/375 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1454 event pairs, 159 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 236. Up to 332 conditions per place. [2023-11-12 02:11:04,441 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 10 selfloop transitions, 0 changer transitions 8/22 dead transitions. [2023-11-12 02:11:04,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 105 flow [2023-11-12 02:11:04,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:11:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:11:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2023-11-12 02:11:04,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822485207100592 [2023-11-12 02:11:04,443 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2023-11-12 02:11:04,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2023-11-12 02:11:04,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:04,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2023-11-12 02:11:04,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 02:11:04,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 02:11:04,446 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 02:11:04,447 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 83 flow. Second operand 2 states and 163 transitions. [2023-11-12 02:11:04,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 105 flow [2023-11-12 02:11:04,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 105 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:04,450 INFO L231 Difference]: Finished difference. Result has 27 places, 14 transitions, 46 flow [2023-11-12 02:11:04,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=27, PETRI_TRANSITIONS=14} [2023-11-12 02:11:04,453 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2023-11-12 02:11:04,454 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 14 transitions, 46 flow [2023-11-12 02:11:04,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 02:11:04,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:04,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:11:04,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:11:04,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:11:04,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:04,457 INFO L85 PathProgramCache]: Analyzing trace with hash 631792, now seen corresponding path program 1 times [2023-11-12 02:11:04,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:04,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221821015] [2023-11-12 02:11:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:04,500 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 02:11:04,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:04,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221821015] [2023-11-12 02:11:04,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221821015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:04,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:04,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:11:04,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089928523] [2023-11-12 02:11:04,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:04,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:04,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:04,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:04,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:04,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 169 [2023-11-12 02:11:04,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 14 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 02:11:04,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:04,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 169 [2023-11-12 02:11:04,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:04,580 INFO L124 PetriNetUnfolderBase]: 61/146 cut-off events. [2023-11-12 02:11:04,582 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-12 02:11:04,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 146 events. 61/146 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 481 event pairs, 34 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 289. Up to 116 conditions per place. [2023-11-12 02:11:04,584 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 11 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-11-12 02:11:04,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 78 flow [2023-11-12 02:11:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:04,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2023-11-12 02:11:04,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40631163708086787 [2023-11-12 02:11:04,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 206 transitions. [2023-11-12 02:11:04,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 206 transitions. [2023-11-12 02:11:04,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:04,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 206 transitions. [2023-11-12 02:11:04,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 02:11:04,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 02:11:04,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 02:11:04,590 INFO L175 Difference]: Start difference. First operand has 27 places, 14 transitions, 46 flow. Second operand 3 states and 206 transitions. [2023-11-12 02:11:04,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 78 flow [2023-11-12 02:11:04,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 17 transitions, 76 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:04,592 INFO L231 Difference]: Finished difference. Result has 25 places, 15 transitions, 56 flow [2023-11-12 02:11:04,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2023-11-12 02:11:04,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2023-11-12 02:11:04,593 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 56 flow [2023-11-12 02:11:04,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 02:11:04,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:04,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:04,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:11:04,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:11:04,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:04,595 INFO L85 PathProgramCache]: Analyzing trace with hash -326792302, now seen corresponding path program 1 times [2023-11-12 02:11:04,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:04,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985686723] [2023-11-12 02:11:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:04,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:04,660 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 02:11:04,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:04,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985686723] [2023-11-12 02:11:04,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985686723] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:04,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765704493] [2023-11-12 02:11:04,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:04,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:04,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:04,663 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:04,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:11:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:04,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:11:04,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:04,762 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 02:11:04,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:11:04,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765704493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:04,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:11:04,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 02:11:04,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586392566] [2023-11-12 02:11:04,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:04,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:04,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:04,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:11:04,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 169 [2023-11-12 02:11:04,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 02:11:04,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:04,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 169 [2023-11-12 02:11:04,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:04,818 INFO L124 PetriNetUnfolderBase]: 100/216 cut-off events. [2023-11-12 02:11:04,818 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-12 02:11:04,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 216 events. 100/216 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 793 event pairs, 62 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 472. Up to 167 conditions per place. [2023-11-12 02:11:04,820 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 11 selfloop transitions, 4 changer transitions 2/19 dead transitions. [2023-11-12 02:11:04,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 98 flow [2023-11-12 02:11:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-11-12 02:11:04,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42998027613412226 [2023-11-12 02:11:04,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-11-12 02:11:04,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-11-12 02:11:04,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:04,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-11-12 02:11:04,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 02:11:04,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 02:11:04,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 02:11:04,829 INFO L175 Difference]: Start difference. First operand has 25 places, 15 transitions, 56 flow. Second operand 3 states and 218 transitions. [2023-11-12 02:11:04,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 98 flow [2023-11-12 02:11:04,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:04,832 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 78 flow [2023-11-12 02:11:04,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-11-12 02:11:04,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2023-11-12 02:11:04,834 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 78 flow [2023-11-12 02:11:04,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 02:11:04,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:04,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:04,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:05,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:05,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:11:05,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1540621736, now seen corresponding path program 1 times [2023-11-12 02:11:05,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238466085] [2023-11-12 02:11:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:05,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:05,097 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 02:11:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238466085] [2023-11-12 02:11:05,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238466085] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995169650] [2023-11-12 02:11:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:05,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:05,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:05,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:05,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:11:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:05,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:11:05,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:05,206 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 02:11:05,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:05,229 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 02:11:05,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995169650] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:05,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:05,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:11:05,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609402381] [2023-11-12 02:11:05,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:05,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:11:05,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:05,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:11:05,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:11:05,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 169 [2023-11-12 02:11:05,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 02:11:05,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:05,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 169 [2023-11-12 02:11:05,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:05,318 INFO L124 PetriNetUnfolderBase]: 44/103 cut-off events. [2023-11-12 02:11:05,318 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-12 02:11:05,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 103 events. 44/103 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 247 event pairs, 0 based on Foata normal form. 14/117 useless extension candidates. Maximal degree in co-relation 277. Up to 52 conditions per place. [2023-11-12 02:11:05,320 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 16 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2023-11-12 02:11:05,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 126 flow [2023-11-12 02:11:05,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:11:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:11:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 401 transitions. [2023-11-12 02:11:05,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39546351084812625 [2023-11-12 02:11:05,323 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 401 transitions. [2023-11-12 02:11:05,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 401 transitions. [2023-11-12 02:11:05,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:05,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 401 transitions. [2023-11-12 02:11:05,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 02:11:05,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states 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 02:11:05,328 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states 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 02:11:05,328 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 78 flow. Second operand 6 states and 401 transitions. [2023-11-12 02:11:05,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 126 flow [2023-11-12 02:11:05,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:05,331 INFO L231 Difference]: Finished difference. Result has 28 places, 13 transitions, 64 flow [2023-11-12 02:11:05,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=64, PETRI_PLACES=28, PETRI_TRANSITIONS=13} [2023-11-12 02:11:05,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2023-11-12 02:11:05,332 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 13 transitions, 64 flow [2023-11-12 02:11:05,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 02:11:05,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:05,333 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-12 02:11:05,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:05,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:05,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:11:05,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1291097885, now seen corresponding path program 1 times [2023-11-12 02:11:05,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:05,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961962083] [2023-11-12 02:11:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:05,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:11:05,583 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:11:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:11:05,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:11:05,601 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:11:05,602 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-12 02:11:05,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-11-12 02:11:05,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-11-12 02:11:05,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-11-12 02:11:05,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-11-12 02:11:05,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-11-12 02:11:05,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-11-12 02:11:05,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-11-12 02:11:05,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:11:05,604 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 02:11:05,605 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:11:05,605 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-12 02:11:05,632 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:11:05,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 97 transitions, 234 flow [2023-11-12 02:11:05,714 INFO L124 PetriNetUnfolderBase]: 52/546 cut-off events. [2023-11-12 02:11:05,714 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-12 02:11:05,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 546 events. 52/546 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2029 event pairs, 6 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 338. Up to 32 conditions per place. [2023-11-12 02:11:05,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 97 transitions, 234 flow [2023-11-12 02:11:05,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 97 transitions, 234 flow [2023-11-12 02:11:05,719 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:11:05,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 97 transitions, 234 flow [2023-11-12 02:11:05,720 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 97 transitions, 234 flow [2023-11-12 02:11:05,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 97 transitions, 234 flow [2023-11-12 02:11:05,791 INFO L124 PetriNetUnfolderBase]: 52/546 cut-off events. [2023-11-12 02:11:05,791 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-12 02:11:05,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 546 events. 52/546 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2029 event pairs, 6 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 338. Up to 32 conditions per place. [2023-11-12 02:11:05,802 INFO L119 LiptonReduction]: Number of co-enabled transitions 2952 [2023-11-12 02:11:08,216 INFO L134 LiptonReduction]: Checked pairs total: 4666 [2023-11-12 02:11:08,216 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-11-12 02:11:08,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:11:08,219 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;@4780cb91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:11:08,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-12 02:11:08,220 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:11:08,220 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:11:08,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:08,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:08,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:11:08,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-12 02:11:08,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:08,221 INFO L85 PathProgramCache]: Analyzing trace with hash 825, now seen corresponding path program 1 times [2023-11-12 02:11:08,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:08,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774835135] [2023-11-12 02:11:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:08,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:08,227 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 02:11:08,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:08,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774835135] [2023-11-12 02:11:08,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774835135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:08,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:08,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:11:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167253002] [2023-11-12 02:11:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:08,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:11:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:11:08,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:11:08,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 181 [2023-11-12 02:11:08,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 104 flow. Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 02:11:08,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:08,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 181 [2023-11-12 02:11:08,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:08,438 INFO L124 PetriNetUnfolderBase]: 639/1178 cut-off events. [2023-11-12 02:11:08,439 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2023-11-12 02:11:08,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2426 conditions, 1178 events. 639/1178 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5385 event pairs, 599 based on Foata normal form. 0/1050 useless extension candidates. Maximal degree in co-relation 765. Up to 1071 conditions per place. [2023-11-12 02:11:08,444 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 12 selfloop transitions, 0 changer transitions 9/25 dead transitions. [2023-11-12 02:11:08,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 130 flow [2023-11-12 02:11:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:11:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:11:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 175 transitions. [2023-11-12 02:11:08,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48342541436464087 [2023-11-12 02:11:08,447 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 175 transitions. [2023-11-12 02:11:08,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 175 transitions. [2023-11-12 02:11:08,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:08,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 175 transitions. [2023-11-12 02:11:08,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 02:11:08,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 02:11:08,451 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 02:11:08,451 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 104 flow. Second operand 2 states and 175 transitions. [2023-11-12 02:11:08,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 130 flow [2023-11-12 02:11:08,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:08,454 INFO L231 Difference]: Finished difference. Result has 31 places, 16 transitions, 60 flow [2023-11-12 02:11:08,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=16} [2023-11-12 02:11:08,455 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-12 02:11:08,456 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 16 transitions, 60 flow [2023-11-12 02:11:08,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 02:11:08,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:08,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:11:08,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:11:08,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-12 02:11:08,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:08,458 INFO L85 PathProgramCache]: Analyzing trace with hash 819333, now seen corresponding path program 1 times [2023-11-12 02:11:08,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:08,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515577248] [2023-11-12 02:11:08,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:08,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:08,479 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 02:11:08,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:08,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515577248] [2023-11-12 02:11:08,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515577248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:08,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:08,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:11:08,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096062912] [2023-11-12 02:11:08,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:08,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:08,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:08,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:08,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:08,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 181 [2023-11-12 02:11:08,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 16 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 02:11:08,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:08,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 181 [2023-11-12 02:11:08,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:08,562 INFO L124 PetriNetUnfolderBase]: 181/358 cut-off events. [2023-11-12 02:11:08,563 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-11-12 02:11:08,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 358 events. 181/358 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1377 event pairs, 122 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 725. Up to 300 conditions per place. [2023-11-12 02:11:08,566 INFO L140 encePairwiseOnDemand]: 178/181 looper letters, 13 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-11-12 02:11:08,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 19 transitions, 96 flow [2023-11-12 02:11:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:08,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2023-11-12 02:11:08,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40515653775322286 [2023-11-12 02:11:08,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2023-11-12 02:11:08,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2023-11-12 02:11:08,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:08,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2023-11-12 02:11:08,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 02:11:08,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 02:11:08,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 02:11:08,574 INFO L175 Difference]: Start difference. First operand has 31 places, 16 transitions, 60 flow. Second operand 3 states and 220 transitions. [2023-11-12 02:11:08,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 19 transitions, 96 flow [2023-11-12 02:11:08,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 90 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:08,576 INFO L231 Difference]: Finished difference. Result has 29 places, 17 transitions, 66 flow [2023-11-12 02:11:08,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=29, PETRI_TRANSITIONS=17} [2023-11-12 02:11:08,577 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2023-11-12 02:11:08,577 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 17 transitions, 66 flow [2023-11-12 02:11:08,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 02:11:08,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:08,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:08,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:11:08,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-12 02:11:08,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1169464534, now seen corresponding path program 1 times [2023-11-12 02:11:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:08,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469226129] [2023-11-12 02:11:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:08,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:08,615 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 02:11:08,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:08,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469226129] [2023-11-12 02:11:08,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469226129] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:08,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683695757] [2023-11-12 02:11:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:08,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:08,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:08,618 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:08,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:11:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:08,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:11:08,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:08,712 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 02:11:08,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:11:08,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683695757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:08,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:11:08,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 02:11:08,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612872439] [2023-11-12 02:11:08,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:08,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:08,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:08,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:08,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:11:08,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 181 [2023-11-12 02:11:08,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 17 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 02:11:08,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:08,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 181 [2023-11-12 02:11:08,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:08,817 INFO L124 PetriNetUnfolderBase]: 321/574 cut-off events. [2023-11-12 02:11:08,817 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-11-12 02:11:08,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 574 events. 321/574 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2307 event pairs, 201 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1232. Up to 466 conditions per place. [2023-11-12 02:11:08,821 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 13 selfloop transitions, 5 changer transitions 2/22 dead transitions. [2023-11-12 02:11:08,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 116 flow [2023-11-12 02:11:08,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-11-12 02:11:08,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429097605893186 [2023-11-12 02:11:08,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-11-12 02:11:08,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-11-12 02:11:08,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:08,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-11-12 02:11:08,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 02:11:08,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 02:11:08,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 02:11:08,828 INFO L175 Difference]: Start difference. First operand has 29 places, 17 transitions, 66 flow. Second operand 3 states and 233 transitions. [2023-11-12 02:11:08,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 116 flow [2023-11-12 02:11:08,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:08,830 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 95 flow [2023-11-12 02:11:08,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-11-12 02:11:08,830 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-12 02:11:08,831 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 95 flow [2023-11-12 02:11:08,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 02:11:08,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:08,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:08,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:09,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:11:09,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-12 02:11:09,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:09,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1893667707, now seen corresponding path program 1 times [2023-11-12 02:11:09,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:09,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677458225] [2023-11-12 02:11:09,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:09,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:09,106 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 02:11:09,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:09,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677458225] [2023-11-12 02:11:09,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677458225] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:09,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758106258] [2023-11-12 02:11:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:09,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:09,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:09,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:09,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:11:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:09,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:11:09,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:09,217 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 02:11:09,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:09,244 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 02:11:09,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758106258] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:09,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-12 02:11:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692974750] [2023-11-12 02:11:09,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:11:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:11:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:11:09,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 181 [2023-11-12 02:11:09,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 02:11:09,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:09,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 181 [2023-11-12 02:11:09,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:09,430 INFO L124 PetriNetUnfolderBase]: 205/366 cut-off events. [2023-11-12 02:11:09,430 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-11-12 02:11:09,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 366 events. 205/366 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1242 event pairs, 8 based on Foata normal form. 14/380 useless extension candidates. Maximal degree in co-relation 1083. Up to 251 conditions per place. [2023-11-12 02:11:09,434 INFO L140 encePairwiseOnDemand]: 177/181 looper letters, 27 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2023-11-12 02:11:09,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 217 flow [2023-11-12 02:11:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:11:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:11:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 434 transitions. [2023-11-12 02:11:09,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996316758747698 [2023-11-12 02:11:09,438 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 434 transitions. [2023-11-12 02:11:09,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 434 transitions. [2023-11-12 02:11:09,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:09,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 434 transitions. [2023-11-12 02:11:09,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states 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 02:11:09,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states 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 02:11:09,446 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states 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 02:11:09,447 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 95 flow. Second operand 6 states and 434 transitions. [2023-11-12 02:11:09,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 217 flow [2023-11-12 02:11:09,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:09,450 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 130 flow [2023-11-12 02:11:09,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2023-11-12 02:11:09,451 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-11-12 02:11:09,451 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 130 flow [2023-11-12 02:11:09,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 02:11:09,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:09,452 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:09,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:09,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:11:09,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-12 02:11:09,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:09,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1994439542, now seen corresponding path program 1 times [2023-11-12 02:11:09,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:09,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856056094] [2023-11-12 02:11:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:09,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:11:09,679 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:11:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:11:09,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:11:09,698 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:11:09,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-12 02:11:09,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-12 02:11:09,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-12 02:11:09,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-12 02:11:09,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-12 02:11:09,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-12 02:11:09,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-12 02:11:09,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-12 02:11:09,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-12 02:11:09,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 02:11:09,701 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 02:11:09,702 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:11:09,702 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-12 02:11:09,726 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-12 02:11:09,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 105 transitions, 265 flow [2023-11-12 02:11:09,894 INFO L124 PetriNetUnfolderBase]: 104/978 cut-off events. [2023-11-12 02:11:09,894 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-12 02:11:09,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 978 events. 104/978 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4681 event pairs, 23 based on Foata normal form. 0/846 useless extension candidates. Maximal degree in co-relation 591. Up to 80 conditions per place. [2023-11-12 02:11:09,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 105 transitions, 265 flow [2023-11-12 02:11:09,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 105 transitions, 265 flow [2023-11-12 02:11:09,903 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:11:09,904 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 105 transitions, 265 flow [2023-11-12 02:11:09,904 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 105 transitions, 265 flow [2023-11-12 02:11:09,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 105 transitions, 265 flow [2023-11-12 02:11:10,054 INFO L124 PetriNetUnfolderBase]: 104/978 cut-off events. [2023-11-12 02:11:10,055 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-12 02:11:10,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 978 events. 104/978 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4681 event pairs, 23 based on Foata normal form. 0/846 useless extension candidates. Maximal degree in co-relation 591. Up to 80 conditions per place. [2023-11-12 02:11:10,079 INFO L119 LiptonReduction]: Number of co-enabled transitions 3960 [2023-11-12 02:11:12,432 INFO L134 LiptonReduction]: Checked pairs total: 7046 [2023-11-12 02:11:12,432 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-11-12 02:11:12,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:11:12,435 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;@4780cb91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:11:12,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-12 02:11:12,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:11:12,436 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:11:12,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:12,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:12,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:11:12,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-12 02:11:12,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1030, now seen corresponding path program 1 times [2023-11-12 02:11:12,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:12,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858551078] [2023-11-12 02:11:12,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:12,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,448 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 02:11:12,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:12,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858551078] [2023-11-12 02:11:12,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858551078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:12,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:12,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:11:12,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749551668] [2023-11-12 02:11:12,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:12,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:11:12,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:12,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:11:12,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:11:12,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 194 [2023-11-12 02:11:12,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 02:11:12,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:12,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 194 [2023-11-12 02:11:12,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:13,008 INFO L124 PetriNetUnfolderBase]: 2250/3713 cut-off events. [2023-11-12 02:11:13,008 INFO L125 PetriNetUnfolderBase]: For 1067/1067 co-relation queries the response was YES. [2023-11-12 02:11:13,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7726 conditions, 3713 events. 2250/3713 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 19191 event pairs, 2129 based on Foata normal form. 0/3374 useless extension candidates. Maximal degree in co-relation 2436. Up to 3442 conditions per place. [2023-11-12 02:11:13,025 INFO L140 encePairwiseOnDemand]: 186/194 looper letters, 14 selfloop transitions, 0 changer transitions 10/28 dead transitions. [2023-11-12 02:11:13,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 157 flow [2023-11-12 02:11:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:11:13,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:11:13,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 187 transitions. [2023-11-12 02:11:13,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48195876288659795 [2023-11-12 02:11:13,027 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 187 transitions. [2023-11-12 02:11:13,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 187 transitions. [2023-11-12 02:11:13,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:13,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 187 transitions. [2023-11-12 02:11:13,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 02:11:13,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 02:11:13,030 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 02:11:13,031 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 127 flow. Second operand 2 states and 187 transitions. [2023-11-12 02:11:13,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 157 flow [2023-11-12 02:11:13,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 157 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:13,034 INFO L231 Difference]: Finished difference. Result has 35 places, 18 transitions, 76 flow [2023-11-12 02:11:13,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=18} [2023-11-12 02:11:13,035 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2023-11-12 02:11:13,036 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 18 transitions, 76 flow [2023-11-12 02:11:13,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 02:11:13,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:13,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:11:13,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 02:11:13,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-12 02:11:13,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1019906, now seen corresponding path program 1 times [2023-11-12 02:11:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:13,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377474990] [2023-11-12 02:11:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:13,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:13,068 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 02:11:13,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:13,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377474990] [2023-11-12 02:11:13,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377474990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:13,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:13,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:11:13,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735927715] [2023-11-12 02:11:13,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:13,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:13,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:13,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 194 [2023-11-12 02:11:13,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 18 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 02:11:13,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:13,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 194 [2023-11-12 02:11:13,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:13,217 INFO L124 PetriNetUnfolderBase]: 485/846 cut-off events. [2023-11-12 02:11:13,218 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2023-11-12 02:11:13,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1749 conditions, 846 events. 485/846 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3609 event pairs, 362 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 1741. Up to 732 conditions per place. [2023-11-12 02:11:13,226 INFO L140 encePairwiseOnDemand]: 191/194 looper letters, 15 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-12 02:11:13,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 21 transitions, 116 flow [2023-11-12 02:11:13,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:13,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2023-11-12 02:11:13,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020618556701031 [2023-11-12 02:11:13,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2023-11-12 02:11:13,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2023-11-12 02:11:13,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:13,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2023-11-12 02:11:13,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 02:11:13,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 02:11:13,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 02:11:13,233 INFO L175 Difference]: Start difference. First operand has 35 places, 18 transitions, 76 flow. Second operand 3 states and 234 transitions. [2023-11-12 02:11:13,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 21 transitions, 116 flow [2023-11-12 02:11:13,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 104 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:13,235 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 76 flow [2023-11-12 02:11:13,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-11-12 02:11:13,237 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2023-11-12 02:11:13,237 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 76 flow [2023-11-12 02:11:13,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 02:11:13,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:13,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:13,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 02:11:13,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-12 02:11:13,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1759250649, now seen corresponding path program 1 times [2023-11-12 02:11:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:13,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013656103] [2023-11-12 02:11:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:13,296 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 02:11:13,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013656103] [2023-11-12 02:11:13,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013656103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243945035] [2023-11-12 02:11:13,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:13,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:13,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:13,298 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:13,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:11:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:13,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:11:13,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:13,424 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 02:11:13,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:11:13,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243945035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:13,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:11:13,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 02:11:13,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362666704] [2023-11-12 02:11:13,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:13,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:13,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:13,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:13,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:11:13,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 194 [2023-11-12 02:11:13,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 02:11:13,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:13,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 194 [2023-11-12 02:11:13,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:13,653 INFO L124 PetriNetUnfolderBase]: 899/1429 cut-off events. [2023-11-12 02:11:13,654 INFO L125 PetriNetUnfolderBase]: For 313/313 co-relation queries the response was YES. [2023-11-12 02:11:13,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3040 conditions, 1429 events. 899/1429 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6125 event pairs, 572 based on Foata normal form. 0/1371 useless extension candidates. Maximal degree in co-relation 3030. Up to 1202 conditions per place. [2023-11-12 02:11:13,665 INFO L140 encePairwiseOnDemand]: 186/194 looper letters, 15 selfloop transitions, 6 changer transitions 2/25 dead transitions. [2023-11-12 02:11:13,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 134 flow [2023-11-12 02:11:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:13,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-11-12 02:11:13,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261168384879725 [2023-11-12 02:11:13,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-11-12 02:11:13,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-11-12 02:11:13,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:13,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-11-12 02:11:13,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 02:11:13,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 02:11:13,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 02:11:13,673 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 76 flow. Second operand 3 states and 248 transitions. [2023-11-12 02:11:13,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 134 flow [2023-11-12 02:11:13,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 25 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:13,675 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 112 flow [2023-11-12 02:11:13,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-11-12 02:11:13,676 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2023-11-12 02:11:13,676 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 112 flow [2023-11-12 02:11:13,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 02:11:13,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:13,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:13,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:13,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-12 02:11:13,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-12 02:11:13,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:13,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1297798802, now seen corresponding path program 1 times [2023-11-12 02:11:13,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:13,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130286362] [2023-11-12 02:11:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:13,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:13,936 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 02:11:13,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:13,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130286362] [2023-11-12 02:11:13,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130286362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:13,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923172511] [2023-11-12 02:11:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:13,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:13,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:13,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:13,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:11:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:14,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:11:14,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:14,064 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 02:11:14,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:14,086 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 02:11:14,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923172511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:14,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:14,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:11:14,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356748754] [2023-11-12 02:11:14,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:14,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:11:14,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:11:14,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:11:14,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 194 [2023-11-12 02:11:14,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 02:11:14,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:14,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 194 [2023-11-12 02:11:14,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:14,305 INFO L124 PetriNetUnfolderBase]: 628/1003 cut-off events. [2023-11-12 02:11:14,306 INFO L125 PetriNetUnfolderBase]: For 696/696 co-relation queries the response was YES. [2023-11-12 02:11:14,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3038 conditions, 1003 events. 628/1003 cut-off events. For 696/696 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3848 event pairs, 56 based on Foata normal form. 14/1016 useless extension candidates. Maximal degree in co-relation 3027. Up to 752 conditions per place. [2023-11-12 02:11:14,316 INFO L140 encePairwiseOnDemand]: 190/194 looper letters, 31 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2023-11-12 02:11:14,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 246 flow [2023-11-12 02:11:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:11:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:11:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 461 transitions. [2023-11-12 02:11:14,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3960481099656357 [2023-11-12 02:11:14,319 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 461 transitions. [2023-11-12 02:11:14,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 461 transitions. [2023-11-12 02:11:14,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:14,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 461 transitions. [2023-11-12 02:11:14,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states 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 02:11:14,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 02:11:14,325 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 02:11:14,325 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 112 flow. Second operand 6 states and 461 transitions. [2023-11-12 02:11:14,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 246 flow [2023-11-12 02:11:14,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:14,330 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 146 flow [2023-11-12 02:11:14,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2023-11-12 02:11:14,331 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-11-12 02:11:14,331 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 146 flow [2023-11-12 02:11:14,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 02:11:14,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:14,333 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:14,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:14,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-12 02:11:14,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-12 02:11:14,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:14,540 INFO L85 PathProgramCache]: Analyzing trace with hash 725105560, now seen corresponding path program 1 times [2023-11-12 02:11:14,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:14,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942629449] [2023-11-12 02:11:14,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:14,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:14,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:14,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942629449] [2023-11-12 02:11:14,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942629449] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:14,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364469175] [2023-11-12 02:11:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:14,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:14,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:14,680 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:14,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:11:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:14,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:11:14,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:14,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:14,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364469175] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:14,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:14,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2023-11-12 02:11:14,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995753214] [2023-11-12 02:11:14,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:14,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:11:14,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:14,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:11:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:11:14,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 194 [2023-11-12 02:11:14,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 146 flow. Second operand has 8 states, 8 states have (on average 73.375) internal successors, (587), 8 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 02:11:14,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:14,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 194 [2023-11-12 02:11:14,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:15,128 INFO L124 PetriNetUnfolderBase]: 555/884 cut-off events. [2023-11-12 02:11:15,128 INFO L125 PetriNetUnfolderBase]: For 1056/1056 co-relation queries the response was YES. [2023-11-12 02:11:15,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 884 events. 555/884 cut-off events. For 1056/1056 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3254 event pairs, 16 based on Foata normal form. 16/899 useless extension candidates. Maximal degree in co-relation 2888. Up to 649 conditions per place. [2023-11-12 02:11:15,139 INFO L140 encePairwiseOnDemand]: 190/194 looper letters, 36 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2023-11-12 02:11:15,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 318 flow [2023-11-12 02:11:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:11:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:11:15,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2023-11-12 02:11:15,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946980854197349 [2023-11-12 02:11:15,143 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2023-11-12 02:11:15,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2023-11-12 02:11:15,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:15,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2023-11-12 02:11:15,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states 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 02:11:15,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states 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 02:11:15,152 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states 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 02:11:15,152 INFO L175 Difference]: Start difference. First operand has 42 places, 26 transitions, 146 flow. Second operand 7 states and 536 transitions. [2023-11-12 02:11:15,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 318 flow [2023-11-12 02:11:15,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 308 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:15,158 INFO L231 Difference]: Finished difference. Result has 49 places, 28 transitions, 174 flow [2023-11-12 02:11:15,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=28} [2023-11-12 02:11:15,158 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-11-12 02:11:15,159 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 28 transitions, 174 flow [2023-11-12 02:11:15,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.375) internal successors, (587), 8 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 02:11:15,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:15,160 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:15,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:15,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-12 02:11:15,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-12 02:11:15,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1796316917, now seen corresponding path program 1 times [2023-11-12 02:11:15,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:15,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906158901] [2023-11-12 02:11:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:15,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 33 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:15,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:15,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906158901] [2023-11-12 02:11:15,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906158901] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:15,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139914346] [2023-11-12 02:11:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:15,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:15,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:15,516 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:15,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:11:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:15,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:11:15,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:15,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:11:15,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139914346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:15,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:11:15,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2023-11-12 02:11:15,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361745942] [2023-11-12 02:11:15,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:15,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:11:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:11:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:11:15,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 194 [2023-11-12 02:11:15,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 28 transitions, 174 flow. Second operand has 8 states, 8 states have (on average 73.125) internal successors, (585), 8 states have internal predecessors, (585), 0 states have call successors, (0), 0 states 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 02:11:15,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:15,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 194 [2023-11-12 02:11:15,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:15,956 INFO L124 PetriNetUnfolderBase]: 475/756 cut-off events. [2023-11-12 02:11:15,956 INFO L125 PetriNetUnfolderBase]: For 1088/1088 co-relation queries the response was YES. [2023-11-12 02:11:15,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 756 events. 475/756 cut-off events. For 1088/1088 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2560 event pairs, 0 based on Foata normal form. 32/787 useless extension candidates. Maximal degree in co-relation 2587. Up to 569 conditions per place. [2023-11-12 02:11:15,964 INFO L140 encePairwiseOnDemand]: 190/194 looper letters, 40 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2023-11-12 02:11:15,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 343 flow [2023-11-12 02:11:15,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:11:15,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:11:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 611 transitions. [2023-11-12 02:11:15,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39368556701030927 [2023-11-12 02:11:15,973 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 611 transitions. [2023-11-12 02:11:15,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 611 transitions. [2023-11-12 02:11:15,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:15,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 611 transitions. [2023-11-12 02:11:15,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.375) internal successors, (611), 8 states have internal predecessors, (611), 0 states have call successors, (0), 0 states 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 02:11:16,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 194.0) internal successors, (1746), 9 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states 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 02:11:16,014 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 194.0) internal successors, (1746), 9 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states 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 02:11:16,014 INFO L175 Difference]: Start difference. First operand has 49 places, 28 transitions, 174 flow. Second operand 8 states and 611 transitions. [2023-11-12 02:11:16,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 343 flow [2023-11-12 02:11:16,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 334 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:11:16,020 INFO L231 Difference]: Finished difference. Result has 50 places, 26 transitions, 162 flow [2023-11-12 02:11:16,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=50, PETRI_TRANSITIONS=26} [2023-11-12 02:11:16,021 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2023-11-12 02:11:16,022 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 26 transitions, 162 flow [2023-11-12 02:11:16,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.125) internal successors, (585), 8 states have internal predecessors, (585), 0 states have call successors, (0), 0 states 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 02:11:16,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:16,022 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:16,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:16,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-12 02:11:16,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-12 02:11:16,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:16,223 INFO L85 PathProgramCache]: Analyzing trace with hash 148742429, now seen corresponding path program 1 times [2023-11-12 02:11:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:16,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633491998] [2023-11-12 02:11:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:11:16,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:11:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:11:16,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:11:16,267 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:11:16,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 10 remaining) [2023-11-12 02:11:16,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-12 02:11:16,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-12 02:11:16,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 10 remaining) [2023-11-12 02:11:16,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-12 02:11:16,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-12 02:11:16,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-12 02:11:16,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-12 02:11:16,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-12 02:11:16,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-12 02:11:16,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-12 02:11:16,269 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:16,275 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 5 thread instances [2023-11-12 02:11:16,275 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:11:16,347 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,348 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,349 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,350 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,351 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,351 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-12 02:11:16,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:11:16 BasicIcfg [2023-11-12 02:11:16,363 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:11:16,364 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:11:16,364 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:11:16,364 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:11:16,365 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:10:54" (3/4) ... [2023-11-12 02:11:16,366 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 02:11:16,368 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:11:16,368 INFO L158 Benchmark]: Toolchain (without parser) took 23322.72ms. Allocated memory was 172.0MB in the beginning and 281.0MB in the end (delta: 109.1MB). Free memory was 122.7MB in the beginning and 215.4MB in the end (delta: -92.7MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2023-11-12 02:11:16,368 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 172.0MB. Free memory is still 141.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:11:16,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 742.63ms. Allocated memory is still 172.0MB. Free memory was 122.4MB in the beginning and 103.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:11:16,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.32ms. Allocated memory is still 172.0MB. Free memory was 102.9MB in the beginning and 101.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:11:16,370 INFO L158 Benchmark]: Boogie Preprocessor took 78.51ms. Allocated memory is still 172.0MB. Free memory was 100.8MB in the beginning and 99.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:11:16,370 INFO L158 Benchmark]: RCFGBuilder took 521.89ms. Allocated memory is still 172.0MB. Free memory was 99.3MB in the beginning and 84.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:11:16,370 INFO L158 Benchmark]: TraceAbstraction took 21867.78ms. Allocated memory was 172.0MB in the beginning and 281.0MB in the end (delta: 109.1MB). Free memory was 84.1MB in the beginning and 215.4MB in the end (delta: -131.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:11:16,371 INFO L158 Benchmark]: Witness Printer took 3.89ms. Allocated memory is still 281.0MB. Free memory is still 215.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:11:16,373 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 172.0MB. Free memory is still 141.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 742.63ms. Allocated memory is still 172.0MB. Free memory was 122.4MB in the beginning and 103.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.32ms. Allocated memory is still 172.0MB. Free memory was 102.9MB in the beginning and 101.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.51ms. Allocated memory is still 172.0MB. Free memory was 100.8MB in the beginning and 99.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 521.89ms. Allocated memory is still 172.0MB. Free memory was 99.3MB in the beginning and 84.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 21867.78ms. Allocated memory was 172.0MB in the beginning and 281.0MB in the end (delta: 109.1MB). Free memory was 84.1MB in the beginning and 215.4MB in the end (delta: -131.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.89ms. Allocated memory is still 281.0MB. Free memory is still 215.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 71 PlacesBefore, 19 PlacesAfterwards, 73 TransitionsBefore, 18 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 68 TotalNumberOfCompositions, 750 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 548, independent: 492, independent conditional: 0, independent unconditional: 492, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 292, independent: 273, independent conditional: 0, independent unconditional: 273, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 548, independent: 219, independent conditional: 0, independent unconditional: 219, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 292, unknown conditional: 0, unknown unconditional: 292] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 80 PlacesBefore, 26 PlacesAfterwards, 81 TransitionsBefore, 24 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 75 TotalNumberOfCompositions, 1962 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1462, independent: 1409, independent conditional: 0, independent unconditional: 1409, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 691, independent: 668, independent conditional: 0, independent unconditional: 668, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1462, independent: 741, independent conditional: 0, independent unconditional: 741, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 691, unknown conditional: 0, unknown unconditional: 691] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 89 PlacesBefore, 31 PlacesAfterwards, 89 TransitionsBefore, 28 TransitionsAfterwards, 2052 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 80 TotalNumberOfCompositions, 3087 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2391, independent: 2334, independent conditional: 0, independent unconditional: 2334, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1063, independent: 1043, independent conditional: 0, independent unconditional: 1043, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2391, independent: 1291, independent conditional: 0, independent unconditional: 1291, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 1063, unknown conditional: 0, unknown unconditional: 1063] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 98 PlacesBefore, 36 PlacesAfterwards, 97 TransitionsBefore, 32 TransitionsAfterwards, 2952 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 84 TotalNumberOfCompositions, 4666 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3563, independent: 3492, independent conditional: 0, independent unconditional: 3492, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1583, independent: 1559, independent conditional: 0, independent unconditional: 1559, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3563, independent: 1933, independent conditional: 0, independent unconditional: 1933, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 1583, unknown conditional: 0, unknown unconditional: 1583] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 107 PlacesBefore, 41 PlacesAfterwards, 105 TransitionsBefore, 36 TransitionsAfterwards, 3960 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 89 TotalNumberOfCompositions, 7046 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5490, independent: 5410, independent conditional: 0, independent unconditional: 5410, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2087, independent: 2062, independent conditional: 0, independent unconditional: 2062, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5490, independent: 3348, independent conditional: 0, independent unconditional: 3348, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 2087, unknown conditional: 0, unknown unconditional: 2087] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 726]: Data race detected [2023-11-12 02:11:16,403 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,403 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,404 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,405 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,405 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,406 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-12 02:11:16,427 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,428 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,428 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,429 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,430 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 02:11:16,430 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not Data race detected The following path leads to a data race: [L710] 0 intptr_t x; [L719] 0 pthread_t t[5 + 1]; [L721] 0 x = 0 [L723] 0 intptr_t i = 1; VAL [\old(argc)=50, argc=50, argv={52:51}, argv={52:51}, i=1, t={3:0}, x=0] [L723] COND TRUE 0 i <= 5 [L724] FCALL, FORK 0 pthread_create(t + i, 0, thread, (void *)i) VAL [\old(argc)=50, arg={0:1}, argc=50, argv={52:51}, argv={52:51}, i=1, t={3:0}, x=0] [L723] 0 i++ VAL [\old(argc)=50, arg={0:1}, argc=50, argv={52:51}, argv={52:51}, i=2, t={3:0}, x=0] [L723] COND TRUE 0 i <= 5 [L724] FCALL, FORK 0 pthread_create(t + i, 0, thread, (void *)i) VAL [\old(argc)=50, arg={0:2}, argc=50, argv={52:51}, argv={52:51}, i=2, t={3:0}, x=0] [L723] 0 i++ VAL [\old(argc)=50, arg={0:2}, argc=50, argv={52:51}, argv={52:51}, i=3, t={3:0}, x=0] [L723] COND TRUE 0 i <= 5 [L724] FCALL, FORK 0 pthread_create(t + i, 0, thread, (void *)i) VAL [\old(argc)=50, arg={0:2}, argc=50, argv={52:51}, argv={52:51}, i=3, t={3:0}, x=0] [L723] 0 i++ VAL [\old(argc)=50, arg={0:2}, argc=50, argv={52:51}, argv={52:51}, i=4, t={3:0}, x=0] [L723] COND TRUE 0 i <= 5 [L724] FCALL, FORK 0 pthread_create(t + i, 0, thread, (void *)i) VAL [\old(argc)=50, arg={0:2}, argc=50, argv={52:51}, argv={52:51}, i=4, t={3:0}, x=0] [L723] 0 i++ VAL [\old(argc)=50, arg={0:2}, argc=50, argv={52:51}, argv={52:51}, i=5, t={3:0}, x=0] [L723] COND TRUE 0 i <= 5 [L724] FCALL, FORK 0 pthread_create(t + i, 0, thread, (void *)i) VAL [\old(argc)=50, arg={0:2}, argc=50, argv={52:51}, argv={52:51}, i=5, t={3:0}, x=0] [L723] 0 i++ VAL [\old(argc)=50, arg={0:2}, argc=50, argv={52:51}, argv={52:51}, i=6, t={3:0}, x=0] [L723] COND FALSE 0 !(i <= 5) [L726] 0 x < 5 + 1 VAL [\old(argc)=50, arg={0:2}, argc=50, argv={52:51}, argv={52:51}, t={3:0}, x=0] [L712] 2 intptr_t thread = (intptr_t)arg; [L714] 2 x = thread [L716] 2 return ((void *)0); [L726] 0 x < 5 + 1 VAL [\old(argc)=50, \result={0:0}, arg={0:2}, arg={0:2}, argc=50, argv={52:51}, argv={52:51}, t={3:0}, thread=2, x=2] Now there is a data race on ~x~0 between C: x = thread [714] and C: x < 5 + 1 [726] - UnprovableResult [Line: 721]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 76 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 11 mSDtfsCounter, 51 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 83 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 3 mSDtfsCounter, 110 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 0 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 1/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 90 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 3 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 0 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 1/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 97 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 150 IncrementalHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 4 mSDtfsCounter, 150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 0 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 1/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 5 thread instances CFG has 7 procedures, 104 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.5s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 143 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 401 IncrementalHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 2 mSDtfsCounter, 401 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 366 SizeOfPredicates, 0 NumberOfNonLiveVariables, 428 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 84/189 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-12 02:11:16,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5b824d-bb91-40d1-a65f-98a1b875f536/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE