./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct.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_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/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_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/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_a5868164-8b2c-4f24-8047-23ab8f2d0e89/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 b9f8638b837f9d4f066ca2de5a13579053f042517f09bc86f1b9882385463239 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:27:13,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:27:14,062 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:27:14,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:27:14,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:27:14,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:27:14,093 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:27:14,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:27:14,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:27:14,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:27:14,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:27:14,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:27:14,097 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:27:14,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:27:14,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:27:14,099 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:27:14,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:27:14,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:27:14,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:27:14,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:27:14,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:27:14,108 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:27:14,109 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:27:14,110 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:27:14,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:27:14,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:27:14,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:27:14,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:27:14,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:27:14,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:27:14,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:14,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:27:14,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:27:14,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:27:14,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:27:14,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:27:14,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:27:14,127 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:27:14,128 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:27:14,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:27:14,129 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:27:14,130 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_a5868164-8b2c-4f24-8047-23ab8f2d0e89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9f8638b837f9d4f066ca2de5a13579053f042517f09bc86f1b9882385463239 [2023-11-12 02:27:14,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:27:14,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:27:14,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:27:14,494 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:27:14,495 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:27:14,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct.i [2023-11-12 02:27:17,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:27:18,019 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:27:18,020 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/sv-benchmarks/c/pthread-race-challenges/per-thread-struct.i [2023-11-12 02:27:18,042 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/data/e445946fb/36c4270e5a04495baed76ffe21d4767d/FLAG894bca679 [2023-11-12 02:27:18,058 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/data/e445946fb/36c4270e5a04495baed76ffe21d4767d [2023-11-12 02:27:18,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:27:18,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:27:18,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:18,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:27:18,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:27:18,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dbebda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18, skipping insertion in model container [2023-11-12 02:27:18,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,128 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:27:18,344 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:27:18,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:18,653 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:27:18,668 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:27:18,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:18,789 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:27:18,805 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:27:18,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18 WrapperNode [2023-11-12 02:27:18,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:18,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:18,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:27:18,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:27:18,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,926 INFO L138 Inliner]: procedures = 266, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-11-12 02:27:18,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:18,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:27:18,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:27:18,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:27:18,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,953 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:18,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:27:18,993 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:27:18,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:27:18,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:27:18,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (1/1) ... [2023-11-12 02:27:19,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:19,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:19,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:27:19,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:27:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:27:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:27:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:27:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:27:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:27:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:27:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:27:19,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-12 02:27:19,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-12 02:27:19,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:27:19,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:27:19,082 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 02:27:19,234 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:27:19,236 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:27:19,457 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:27:19,465 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:27:19,465 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:27:19,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:19 BoogieIcfgContainer [2023-11-12 02:27:19,468 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:27:19,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:27:19,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:27:19,474 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:27:19,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:27:18" (1/3) ... [2023-11-12 02:27:19,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c117e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:19, skipping insertion in model container [2023-11-12 02:27:19,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:18" (2/3) ... [2023-11-12 02:27:19,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c117e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:19, skipping insertion in model container [2023-11-12 02:27:19,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:19" (3/3) ... [2023-11-12 02:27:19,477 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-struct.i [2023-11-12 02:27:19,486 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:27:19,497 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:27:19,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-12 02:27:19,498 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:27:19,567 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:27:19,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 103 transitions, 213 flow [2023-11-12 02:27:19,692 INFO L124 PetriNetUnfolderBase]: 6/154 cut-off events. [2023-11-12 02:27:19,696 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:27:19,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 154 events. 6/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 301 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-11-12 02:27:19,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 103 transitions, 213 flow [2023-11-12 02:27:19,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 103 transitions, 213 flow [2023-11-12 02:27:19,714 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:27:19,733 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 103 transitions, 213 flow [2023-11-12 02:27:19,737 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 103 transitions, 213 flow [2023-11-12 02:27:19,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 103 transitions, 213 flow [2023-11-12 02:27:19,778 INFO L124 PetriNetUnfolderBase]: 6/154 cut-off events. [2023-11-12 02:27:19,778 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:27:19,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 154 events. 6/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 301 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-11-12 02:27:19,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 1972 [2023-11-12 02:27:21,902 INFO L134 LiptonReduction]: Checked pairs total: 7794 [2023-11-12 02:27:21,904 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-11-12 02:27:21,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:27:21,946 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;@5d6d36c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:27:21,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 02:27:21,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:27:21,959 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-11-12 02:27:21,960 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:27:21,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:21,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:21,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-12 02:27:21,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:21,967 INFO L85 PathProgramCache]: Analyzing trace with hash -675672398, now seen corresponding path program 1 times [2023-11-12 02:27:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:21,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118235778] [2023-11-12 02:27:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:21,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:22,389 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 02:27:22,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:22,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118235778] [2023-11-12 02:27:22,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118235778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:22,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:22,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:27:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888711666] [2023-11-12 02:27:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:22,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:22,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:22,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:22,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:22,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 165 [2023-11-12 02:27:22,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 02:27:22,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:22,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 165 [2023-11-12 02:27:22,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:22,656 INFO L124 PetriNetUnfolderBase]: 29/249 cut-off events. [2023-11-12 02:27:22,657 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:27:22,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 249 events. 29/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1207 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 273. Up to 71 conditions per place. [2023-11-12 02:27:22,661 INFO L140 encePairwiseOnDemand]: 160/165 looper letters, 18 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-12 02:27:22,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 54 transitions, 159 flow [2023-11-12 02:27:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:27:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2023-11-12 02:27:22,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5742424242424242 [2023-11-12 02:27:22,680 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2023-11-12 02:27:22,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2023-11-12 02:27:22,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:22,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2023-11-12 02:27:22,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 02:27:22,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states 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 02:27:22,697 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states 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 02:27:22,700 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 101 flow. Second operand 4 states and 379 transitions. [2023-11-12 02:27:22,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 54 transitions, 159 flow [2023-11-12 02:27:22,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 159 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:27:22,706 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 124 flow [2023-11-12 02:27:22,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-11-12 02:27:22,712 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2023-11-12 02:27:22,712 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 124 flow [2023-11-12 02:27:22,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 02:27:22,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:22,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:22,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:27:22,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-12 02:27:22,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:22,715 INFO L85 PathProgramCache]: Analyzing trace with hash 609457082, now seen corresponding path program 1 times [2023-11-12 02:27:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:22,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143481104] [2023-11-12 02:27:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:22,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:23,155 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 02:27:23,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:23,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143481104] [2023-11-12 02:27:23,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143481104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:23,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:23,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:23,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344476418] [2023-11-12 02:27:23,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:23,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:27:23,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:23,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:27:23,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:27:23,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 165 [2023-11-12 02:27:23,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 02:27:23,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:23,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 165 [2023-11-12 02:27:23,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:23,732 INFO L124 PetriNetUnfolderBase]: 240/679 cut-off events. [2023-11-12 02:27:23,733 INFO L125 PetriNetUnfolderBase]: For 32/38 co-relation queries the response was YES. [2023-11-12 02:27:23,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 679 events. 240/679 cut-off events. For 32/38 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3777 event pairs, 40 based on Foata normal form. 1/643 useless extension candidates. Maximal degree in co-relation 1198. Up to 334 conditions per place. [2023-11-12 02:27:23,740 INFO L140 encePairwiseOnDemand]: 142/165 looper letters, 62 selfloop transitions, 29 changer transitions 2/104 dead transitions. [2023-11-12 02:27:23,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 432 flow [2023-11-12 02:27:23,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:27:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:27:23,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 526 transitions. [2023-11-12 02:27:23,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5313131313131313 [2023-11-12 02:27:23,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 526 transitions. [2023-11-12 02:27:23,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 526 transitions. [2023-11-12 02:27:23,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:23,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 526 transitions. [2023-11-12 02:27:23,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 02:27:23,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states 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 02:27:23,753 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states 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 02:27:23,753 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 124 flow. Second operand 6 states and 526 transitions. [2023-11-12 02:27:23,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 432 flow [2023-11-12 02:27:23,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 104 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:27:23,759 INFO L231 Difference]: Finished difference. Result has 63 places, 76 transitions, 331 flow [2023-11-12 02:27:23,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=63, PETRI_TRANSITIONS=76} [2023-11-12 02:27:23,761 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2023-11-12 02:27:23,761 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 331 flow [2023-11-12 02:27:23,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 02:27:23,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:23,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:23,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:27:23,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-12 02:27:23,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:23,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1202638263, now seen corresponding path program 1 times [2023-11-12 02:27:23,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:23,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790189393] [2023-11-12 02:27:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:24,137 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 02:27:24,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:24,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790189393] [2023-11-12 02:27:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790189393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:24,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:24,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:24,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070816252] [2023-11-12 02:27:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:24,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:27:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:27:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:27:24,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 165 [2023-11-12 02:27:24,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 02:27:24,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:24,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 165 [2023-11-12 02:27:24,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:24,836 INFO L124 PetriNetUnfolderBase]: 366/959 cut-off events. [2023-11-12 02:27:24,836 INFO L125 PetriNetUnfolderBase]: For 404/410 co-relation queries the response was YES. [2023-11-12 02:27:24,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 959 events. 366/959 cut-off events. For 404/410 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5666 event pairs, 90 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 2463. Up to 660 conditions per place. [2023-11-12 02:27:24,846 INFO L140 encePairwiseOnDemand]: 143/165 looper letters, 79 selfloop transitions, 72 changer transitions 13/179 dead transitions. [2023-11-12 02:27:24,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 179 transitions, 1059 flow [2023-11-12 02:27:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:27:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:27:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 570 transitions. [2023-11-12 02:27:24,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-11-12 02:27:24,850 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 570 transitions. [2023-11-12 02:27:24,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 570 transitions. [2023-11-12 02:27:24,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:24,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 570 transitions. [2023-11-12 02:27:24,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 02:27:24,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states 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 02:27:24,857 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states 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 02:27:24,857 INFO L175 Difference]: Start difference. First operand has 63 places, 76 transitions, 331 flow. Second operand 6 states and 570 transitions. [2023-11-12 02:27:24,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 179 transitions, 1059 flow [2023-11-12 02:27:24,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 179 transitions, 1033 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-12 02:27:24,869 INFO L231 Difference]: Finished difference. Result has 69 places, 146 transitions, 871 flow [2023-11-12 02:27:24,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=871, PETRI_PLACES=69, PETRI_TRANSITIONS=146} [2023-11-12 02:27:24,870 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 20 predicate places. [2023-11-12 02:27:24,870 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 146 transitions, 871 flow [2023-11-12 02:27:24,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 02:27:24,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:24,871 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-12 02:27:24,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:27:24,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-12 02:27:24,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash -606973255, now seen corresponding path program 1 times [2023-11-12 02:27:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:24,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299056922] [2023-11-12 02:27:24,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:24,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:27:24,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:27:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:27:24,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:27:24,986 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:27:24,987 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-12 02:27:24,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-12 02:27:24,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-12 02:27:24,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-12 02:27:24,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-12 02:27:24,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-12 02:27:24,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-12 02:27:24,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:27:24,993 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-12 02:27:24,999 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:27:24,999 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:27:25,033 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:27:25,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 122 transitions, 260 flow [2023-11-12 02:27:25,081 INFO L124 PetriNetUnfolderBase]: 11/275 cut-off events. [2023-11-12 02:27:25,082 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:27:25,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 275 events. 11/275 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 619 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 156. Up to 8 conditions per place. [2023-11-12 02:27:25,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 122 transitions, 260 flow [2023-11-12 02:27:25,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 122 transitions, 260 flow [2023-11-12 02:27:25,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:27:25,086 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 122 transitions, 260 flow [2023-11-12 02:27:25,086 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 122 transitions, 260 flow [2023-11-12 02:27:25,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 122 transitions, 260 flow [2023-11-12 02:27:25,130 INFO L124 PetriNetUnfolderBase]: 11/275 cut-off events. [2023-11-12 02:27:25,130 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:27:25,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 275 events. 11/275 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 619 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 156. Up to 8 conditions per place. [2023-11-12 02:27:25,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 4964 [2023-11-12 02:27:27,238 INFO L134 LiptonReduction]: Checked pairs total: 21336 [2023-11-12 02:27:27,239 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-11-12 02:27:27,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:27:27,254 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;@5d6d36c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:27:27,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-12 02:27:27,257 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:27:27,260 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-11-12 02:27:27,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:27:27,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:27,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:27,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:27:27,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:27,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2015836697, now seen corresponding path program 1 times [2023-11-12 02:27:27,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:27,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745669678] [2023-11-12 02:27:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:27,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:27,321 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 02:27:27,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:27,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745669678] [2023-11-12 02:27:27,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745669678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:27,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:27,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:27:27,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454190290] [2023-11-12 02:27:27,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:27,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:27,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:27,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:27,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 193 [2023-11-12 02:27:27,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 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 02:27:27,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:27,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 193 [2023-11-12 02:27:27,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:27,577 INFO L124 PetriNetUnfolderBase]: 286/955 cut-off events. [2023-11-12 02:27:27,577 INFO L125 PetriNetUnfolderBase]: For 50/70 co-relation queries the response was YES. [2023-11-12 02:27:27,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 955 events. 286/955 cut-off events. For 50/70 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5988 event pairs, 136 based on Foata normal form. 0/842 useless extension candidates. Maximal degree in co-relation 351. Up to 515 conditions per place. [2023-11-12 02:27:27,584 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 23 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-11-12 02:27:27,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 202 flow [2023-11-12 02:27:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:27:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2023-11-12 02:27:27,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5803108808290155 [2023-11-12 02:27:27,587 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2023-11-12 02:27:27,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2023-11-12 02:27:27,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:27,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2023-11-12 02:27:27,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 02:27:27,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states 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 02:27:27,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states 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 02:27:27,592 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 134 flow. Second operand 4 states and 448 transitions. [2023-11-12 02:27:27,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 202 flow [2023-11-12 02:27:27,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 202 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:27:27,595 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 161 flow [2023-11-12 02:27:27,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-11-12 02:27:27,596 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2023-11-12 02:27:27,596 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 161 flow [2023-11-12 02:27:27,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 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 02:27:27,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:27,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:27,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:27:27,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:27:27,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash -908113666, now seen corresponding path program 1 times [2023-11-12 02:27:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:27,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632239266] [2023-11-12 02:27:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:27,823 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 02:27:27,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:27,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632239266] [2023-11-12 02:27:27,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632239266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:27,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:27,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:27,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585644331] [2023-11-12 02:27:27,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:27,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:27:27,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:27,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:27:27,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:27:28,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 193 [2023-11-12 02:27:28,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 02:27:28,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:28,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 193 [2023-11-12 02:27:28,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:29,552 INFO L124 PetriNetUnfolderBase]: 5336/9835 cut-off events. [2023-11-12 02:27:29,552 INFO L125 PetriNetUnfolderBase]: For 437/457 co-relation queries the response was YES. [2023-11-12 02:27:29,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19157 conditions, 9835 events. 5336/9835 cut-off events. For 437/457 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 68623 event pairs, 1263 based on Foata normal form. 2/9441 useless extension candidates. Maximal degree in co-relation 19059. Up to 5839 conditions per place. [2023-11-12 02:27:29,634 INFO L140 encePairwiseOnDemand]: 166/193 looper letters, 90 selfloop transitions, 48 changer transitions 2/154 dead transitions. [2023-11-12 02:27:29,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 154 transitions, 647 flow [2023-11-12 02:27:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:27:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:27:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 649 transitions. [2023-11-12 02:27:29,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5604490500863558 [2023-11-12 02:27:29,638 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 649 transitions. [2023-11-12 02:27:29,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 649 transitions. [2023-11-12 02:27:29,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:29,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 649 transitions. [2023-11-12 02:27:29,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:29,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states 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 02:27:29,645 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states 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 02:27:29,645 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 161 flow. Second operand 6 states and 649 transitions. [2023-11-12 02:27:29,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 154 transitions, 647 flow [2023-11-12 02:27:29,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 154 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:27:29,652 INFO L231 Difference]: Finished difference. Result has 76 places, 108 transitions, 490 flow [2023-11-12 02:27:29,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=76, PETRI_TRANSITIONS=108} [2023-11-12 02:27:29,653 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 14 predicate places. [2023-11-12 02:27:29,654 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 108 transitions, 490 flow [2023-11-12 02:27:29,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 02:27:29,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:29,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:29,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:27:29,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:27:29,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:29,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1346708102, now seen corresponding path program 1 times [2023-11-12 02:27:29,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:29,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223238018] [2023-11-12 02:27:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:29,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:30,027 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 02:27:30,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:30,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223238018] [2023-11-12 02:27:30,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223238018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:30,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:30,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:30,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203987736] [2023-11-12 02:27:30,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:30,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:27:30,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:30,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:27:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:27:30,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 193 [2023-11-12 02:27:30,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 108 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 02:27:30,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:30,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 193 [2023-11-12 02:27:30,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:32,803 INFO L124 PetriNetUnfolderBase]: 9073/15795 cut-off events. [2023-11-12 02:27:32,804 INFO L125 PetriNetUnfolderBase]: For 8181/8295 co-relation queries the response was YES. [2023-11-12 02:27:32,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43465 conditions, 15795 events. 9073/15795 cut-off events. For 8181/8295 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 111975 event pairs, 2713 based on Foata normal form. 0/14994 useless extension candidates. Maximal degree in co-relation 12569. Up to 11503 conditions per place. [2023-11-12 02:27:32,942 INFO L140 encePairwiseOnDemand]: 166/193 looper letters, 145 selfloop transitions, 142 changer transitions 0/305 dead transitions. [2023-11-12 02:27:32,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 305 transitions, 1896 flow [2023-11-12 02:27:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:27:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:27:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 698 transitions. [2023-11-12 02:27:32,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027633851468048 [2023-11-12 02:27:32,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 698 transitions. [2023-11-12 02:27:32,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 698 transitions. [2023-11-12 02:27:32,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:32,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 698 transitions. [2023-11-12 02:27:32,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 0 states have call successors, (0), 0 states 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 02:27:32,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states 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 02:27:32,955 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states 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 02:27:32,956 INFO L175 Difference]: Start difference. First operand has 76 places, 108 transitions, 490 flow. Second operand 6 states and 698 transitions. [2023-11-12 02:27:32,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 305 transitions, 1896 flow [2023-11-12 02:27:32,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 305 transitions, 1876 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-11-12 02:27:32,995 INFO L231 Difference]: Finished difference. Result has 84 places, 245 transitions, 1784 flow [2023-11-12 02:27:32,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1784, PETRI_PLACES=84, PETRI_TRANSITIONS=245} [2023-11-12 02:27:32,997 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 22 predicate places. [2023-11-12 02:27:32,997 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 245 transitions, 1784 flow [2023-11-12 02:27:32,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 02:27:32,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:32,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:33,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:27:33,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:27:33,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:33,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1468171896, now seen corresponding path program 1 times [2023-11-12 02:27:33,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:33,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453261710] [2023-11-12 02:27:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:33,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:33,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:33,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453261710] [2023-11-12 02:27:33,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453261710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:33,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953224775] [2023-11-12 02:27:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:33,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:33,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:33,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:33,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:27:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:33,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-12 02:27:33,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:33,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 02:27:33,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-12 02:27:33,906 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:27:33,907 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-12 02:27:33,966 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:27:33,966 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-12 02:27:34,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:27:34,116 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2023-11-12 02:27:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:34,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:34,170 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_237 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_237) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 1)))) (forall ((v_ArrVal_237 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_237) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 2)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_237 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_237) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 3)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_237 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_237) c_threadThread1of2ForFork0_~t~0.base) c_threadThread1of2ForFork0_~t~0.offset) |c_threadThread1of2ForFork0_#t~nondet4|))) is different from false [2023-11-12 02:27:34,216 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_threadThread1of2ForFork0_~t~0.offset 3))) (let ((.cse0 (store |c_#race| c_threadThread1of2ForFork0_~t~0.base (store (select |c_#race| c_threadThread1of2ForFork0_~t~0.base) .cse1 |c_threadThread1of2ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_237 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_237) c_threadThread1of2ForFork0_~t~0.base) c_threadThread1of2ForFork0_~t~0.offset))) (forall ((v_ArrVal_237 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_237) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 2)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_237 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_237) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 1)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_237 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_237) c_threadThread1of2ForFork0_~t~0.base) .cse1)))))) is different from false [2023-11-12 02:27:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-12 02:27:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953224775] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:34,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:27:34,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-11-12 02:27:34,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215830574] [2023-11-12 02:27:34,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:34,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-12 02:27:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:34,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-12 02:27:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=339, Unknown=2, NotChecked=78, Total=506 [2023-11-12 02:27:34,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 193 [2023-11-12 02:27:34,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 245 transitions, 1784 flow. Second operand has 23 states, 23 states have (on average 61.26086956521739) internal successors, (1409), 23 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states 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 02:27:34,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:34,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 193 [2023-11-12 02:27:34,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:39,553 INFO L124 PetriNetUnfolderBase]: 14337/23568 cut-off events. [2023-11-12 02:27:39,554 INFO L125 PetriNetUnfolderBase]: For 26957/26971 co-relation queries the response was YES. [2023-11-12 02:27:39,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85295 conditions, 23568 events. 14337/23568 cut-off events. For 26957/26971 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 166526 event pairs, 1879 based on Foata normal form. 420/22638 useless extension candidates. Maximal degree in co-relation 73121. Up to 9771 conditions per place. [2023-11-12 02:27:39,779 INFO L140 encePairwiseOnDemand]: 172/193 looper letters, 547 selfloop transitions, 361 changer transitions 2/915 dead transitions. [2023-11-12 02:27:39,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 915 transitions, 7810 flow [2023-11-12 02:27:39,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 02:27:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-12 02:27:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1374 transitions. [2023-11-12 02:27:39,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41877476379152695 [2023-11-12 02:27:39,786 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1374 transitions. [2023-11-12 02:27:39,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1374 transitions. [2023-11-12 02:27:39,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:39,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1374 transitions. [2023-11-12 02:27:39,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 80.82352941176471) internal successors, (1374), 17 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 02:27:39,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 193.0) internal successors, (3474), 18 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states 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 02:27:39,800 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 193.0) internal successors, (3474), 18 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states 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 02:27:39,800 INFO L175 Difference]: Start difference. First operand has 84 places, 245 transitions, 1784 flow. Second operand 17 states and 1374 transitions. [2023-11-12 02:27:39,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 915 transitions, 7810 flow [2023-11-12 02:27:40,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 915 transitions, 7756 flow, removed 27 selfloop flow, removed 0 redundant places. [2023-11-12 02:27:40,588 INFO L231 Difference]: Finished difference. Result has 113 places, 606 transitions, 6141 flow [2023-11-12 02:27:40,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6141, PETRI_PLACES=113, PETRI_TRANSITIONS=606} [2023-11-12 02:27:40,589 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 51 predicate places. [2023-11-12 02:27:40,590 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 606 transitions, 6141 flow [2023-11-12 02:27:40,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 61.26086956521739) internal successors, (1409), 23 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states 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 02:27:40,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:40,591 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:40,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:40,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:40,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:27:40,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:40,806 INFO L85 PathProgramCache]: Analyzing trace with hash -995324656, now seen corresponding path program 1 times [2023-11-12 02:27:40,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:40,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58859719] [2023-11-12 02:27:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:40,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:41,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:41,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58859719] [2023-11-12 02:27:41,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58859719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:41,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523766405] [2023-11-12 02:27:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:41,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:41,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:41,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:41,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:27:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:41,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 02:27:41,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:41,737 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 02:27:41,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-12 02:27:41,834 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-12 02:27:41,905 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-12 02:27:42,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:27:42,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-11-12 02:27:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:42,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:42,116 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0)) (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0)) (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0))) is different from false [2023-11-12 02:27:42,188 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store |c_#race| v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store |c_#race| v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store |c_#race| v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store |c_#race| v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37)))) is different from false [2023-11-12 02:27:42,251 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1 0)))) (and (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= 0 (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1))) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37)))))) is different from false [2023-11-12 02:27:42,349 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) (.cse1 (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse2 0) .cse1 0)))) (and (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse2) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37)))))) is different from false [2023-11-12 02:27:42,411 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) (.cse2 (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) (.cse3 (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| (store (store (store (select |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1 0) .cse2 0) .cse3 0)))) (and (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= 0 (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse2))) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37))) (forall ((v_threadThread1of2ForFork0_~t~0.base_37 Int)) (or (forall ((v_ArrVal_319 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_37 v_ArrVal_319) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse3) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_37)))))) is different from false [2023-11-12 02:27:42,452 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:27:42,453 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 51 [2023-11-12 02:27:42,463 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:27:42,464 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 36 [2023-11-12 02:27:42,470 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-12 02:27:42,481 INFO L322 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-12 02:27:42,482 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-12 02:27:42,492 INFO L322 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-12 02:27:42,493 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-12 02:27:42,501 INFO L322 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-12 02:27:42,501 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 1 [2023-11-12 02:27:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-12 02:27:42,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523766405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:42,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:27:42,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-11-12 02:27:42,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444834769] [2023-11-12 02:27:42,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:42,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-12 02:27:42,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:42,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-12 02:27:42,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=413, Unknown=5, NotChecked=230, Total=756 [2023-11-12 02:27:42,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 193 [2023-11-12 02:27:42,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 606 transitions, 6141 flow. Second operand has 28 states, 28 states have (on average 63.0) internal successors, (1764), 28 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 02:27:42,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:42,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 193 [2023-11-12 02:27:42,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:51,541 INFO L124 PetriNetUnfolderBase]: 17158/28798 cut-off events. [2023-11-12 02:27:51,541 INFO L125 PetriNetUnfolderBase]: For 94819/94845 co-relation queries the response was YES. [2023-11-12 02:27:51,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131568 conditions, 28798 events. 17158/28798 cut-off events. For 94819/94845 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 209600 event pairs, 1670 based on Foata normal form. 250/27255 useless extension candidates. Maximal degree in co-relation 119922. Up to 10282 conditions per place. [2023-11-12 02:27:51,882 INFO L140 encePairwiseOnDemand]: 161/193 looper letters, 582 selfloop transitions, 467 changer transitions 4/1058 dead transitions. [2023-11-12 02:27:51,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 1058 transitions, 12034 flow [2023-11-12 02:27:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 02:27:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-12 02:27:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1348 transitions. [2023-11-12 02:27:51,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108503505028955 [2023-11-12 02:27:51,890 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1348 transitions. [2023-11-12 02:27:51,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1348 transitions. [2023-11-12 02:27:51,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:51,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1348 transitions. [2023-11-12 02:27:51,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 79.29411764705883) internal successors, (1348), 17 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states 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 02:27:51,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 193.0) internal successors, (3474), 18 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states 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 02:27:51,905 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 193.0) internal successors, (3474), 18 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states 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 02:27:51,905 INFO L175 Difference]: Start difference. First operand has 113 places, 606 transitions, 6141 flow. Second operand 17 states and 1348 transitions. [2023-11-12 02:27:51,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 1058 transitions, 12034 flow [2023-11-12 02:27:53,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 1058 transitions, 12014 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-12 02:27:53,641 INFO L231 Difference]: Finished difference. Result has 141 places, 786 transitions, 10108 flow [2023-11-12 02:27:53,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=6123, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10108, PETRI_PLACES=141, PETRI_TRANSITIONS=786} [2023-11-12 02:27:53,643 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 79 predicate places. [2023-11-12 02:27:53,643 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 786 transitions, 10108 flow [2023-11-12 02:27:53,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 63.0) internal successors, (1764), 28 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 02:27:53,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:53,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:53,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:53,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5868164-8b2c-4f24-8047-23ab8f2d0e89/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:53,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:27:53,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:53,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1388389795, now seen corresponding path program 1 times [2023-11-12 02:27:53,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:53,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163173331] [2023-11-12 02:27:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:53,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:54,122 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 02:27:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:54,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163173331] [2023-11-12 02:27:54,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163173331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:54,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:54,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021421003] [2023-11-12 02:27:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:54,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:27:54,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:27:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:27:54,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 193 [2023-11-12 02:27:54,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 786 transitions, 10108 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 02:27:54,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:54,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 193 [2023-11-12 02:27:54,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:00,600 INFO L124 PetriNetUnfolderBase]: 12848/22913 cut-off events. [2023-11-12 02:28:00,601 INFO L125 PetriNetUnfolderBase]: For 138110/139901 co-relation queries the response was YES. [2023-11-12 02:28:00,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119071 conditions, 22913 events. 12848/22913 cut-off events. For 138110/139901 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 174469 event pairs, 2242 based on Foata normal form. 86/22129 useless extension candidates. Maximal degree in co-relation 112368. Up to 15431 conditions per place. [2023-11-12 02:28:00,912 INFO L140 encePairwiseOnDemand]: 178/193 looper letters, 665 selfloop transitions, 230 changer transitions 0/1041 dead transitions. [2023-11-12 02:28:00,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 1041 transitions, 15137 flow [2023-11-12 02:28:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:28:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:28:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2023-11-12 02:28:00,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5716753022452504 [2023-11-12 02:28:00,916 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2023-11-12 02:28:00,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2023-11-12 02:28:00,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:00,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2023-11-12 02:28:00,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:00,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states 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 02:28:00,923 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states 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 02:28:00,923 INFO L175 Difference]: Start difference. First operand has 141 places, 786 transitions, 10108 flow. Second operand 6 states and 662 transitions. [2023-11-12 02:28:00,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 1041 transitions, 15137 flow [2023-11-12 02:28:02,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 1041 transitions, 15038 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-11-12 02:28:02,581 INFO L231 Difference]: Finished difference. Result has 148 places, 1006 transitions, 14105 flow [2023-11-12 02:28:02,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=10033, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14105, PETRI_PLACES=148, PETRI_TRANSITIONS=1006} [2023-11-12 02:28:02,583 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 86 predicate places. [2023-11-12 02:28:02,583 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 1006 transitions, 14105 flow [2023-11-12 02:28:02,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 02:28:02,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:02,584 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:02,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:28:02,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-12 02:28:02,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:02,584 INFO L85 PathProgramCache]: Analyzing trace with hash 967508356, now seen corresponding path program 1 times [2023-11-12 02:28:02,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:02,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730395959] [2023-11-12 02:28:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:02,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 02:28:02,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:02,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730395959] [2023-11-12 02:28:02,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730395959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:02,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:02,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:28:02,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677265706] [2023-11-12 02:28:02,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:02,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:28:02,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:02,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:28:02,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:28:03,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 193 [2023-11-12 02:28:03,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 1006 transitions, 14105 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 02:28:03,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:03,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 193 [2023-11-12 02:28:03,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand