./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --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_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/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_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/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_476f445b-fe22-46c0-b67c-3891637cdcbc/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 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:20:43,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:20:43,846 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:20:43,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:20:43,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:20:43,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:20:43,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:20:43,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:20:43,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:20:43,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:20:43,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:20:43,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:20:43,886 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:20:43,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:20:43,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:20:43,889 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:20:43,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:20:43,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:20:43,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:20:43,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:20:43,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:20:43,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:20:43,894 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:20:43,894 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:20:43,895 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:20:43,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:20:43,896 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:20:43,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:20:43,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:20:43,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:20:43,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:43,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:20:43,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:20:43,900 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:20:43,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:20:43,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:20:43,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:20:43,902 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:20:43,903 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:20:43,903 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:20:43,904 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:20:43,904 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_476f445b-fe22-46c0-b67c-3891637cdcbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2023-11-12 02:20:44,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:20:44,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:20:44,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:20:44,193 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:20:44,194 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:20:44,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2023-11-12 02:20:47,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:20:47,619 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:20:47,620 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2023-11-12 02:20:47,636 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/data/ead2e6c96/de13e9bc55ad4677bd70ccff539f4074/FLAG09cb24eec [2023-11-12 02:20:47,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/data/ead2e6c96/de13e9bc55ad4677bd70ccff539f4074 [2023-11-12 02:20:47,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:20:47,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:20:47,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:47,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:20:47,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:20:47,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:47" (1/1) ... [2023-11-12 02:20:47,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16699660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:47, skipping insertion in model container [2023-11-12 02:20:47,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:47" (1/1) ... [2023-11-12 02:20:47,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:20:48,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:48,070 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:20:48,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:48,139 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:20:48,139 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:20:48,148 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:20:48,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48 WrapperNode [2023-11-12 02:20:48,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:48,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:48,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:20:48,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:20:48,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,232 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 381 [2023-11-12 02:20:48,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:48,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:20:48,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:20:48,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:20:48,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,287 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:20:48,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:20:48,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:20:48,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:20:48,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (1/1) ... [2023-11-12 02:20:48,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:48,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:48,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:48,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:20:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:20:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:20:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:20:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:20:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:20:48,438 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:20:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:20:48,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:20:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:20:48,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:20:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:20:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:20:48,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:20:48,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:20:48,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:20:48,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:20:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:20:48,448 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 02:20:48,661 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:20:48,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:20:49,919 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:20:50,172 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:20:50,172 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:20:50,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:50 BoogieIcfgContainer [2023-11-12 02:20:50,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:20:50,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:20:50,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:20:50,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:20:50,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:20:47" (1/3) ... [2023-11-12 02:20:50,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:50, skipping insertion in model container [2023-11-12 02:20:50,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:48" (2/3) ... [2023-11-12 02:20:50,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:50, skipping insertion in model container [2023-11-12 02:20:50,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:50" (3/3) ... [2023-11-12 02:20:50,188 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-11-12 02:20:50,198 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:20:50,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:20:50,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-11-12 02:20:50,211 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:20:50,397 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:20:50,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 523 places, 540 transitions, 1101 flow [2023-11-12 02:20:50,778 INFO L124 PetriNetUnfolderBase]: 27/537 cut-off events. [2023-11-12 02:20:50,779 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:20:50,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 537 events. 27/537 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 663 event pairs, 0 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 428. Up to 2 conditions per place. [2023-11-12 02:20:50,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 523 places, 540 transitions, 1101 flow [2023-11-12 02:20:50,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 473 places, 487 transitions, 992 flow [2023-11-12 02:20:50,825 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:20:50,848 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 473 places, 487 transitions, 992 flow [2023-11-12 02:20:50,854 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 473 places, 487 transitions, 992 flow [2023-11-12 02:20:50,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 473 places, 487 transitions, 992 flow [2023-11-12 02:20:50,988 INFO L124 PetriNetUnfolderBase]: 24/487 cut-off events. [2023-11-12 02:20:50,988 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:20:50,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 487 events. 24/487 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 650 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 428. Up to 2 conditions per place. [2023-11-12 02:20:51,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 14658 [2023-11-12 02:21:25,790 INFO L134 LiptonReduction]: Checked pairs total: 107007 [2023-11-12 02:21:25,790 INFO L136 LiptonReduction]: Total number of compositions: 499 [2023-11-12 02:21:25,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:21:25,815 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;@b7d8be2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:21:25,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2023-11-12 02:21:25,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:21:25,818 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:21:25,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:21:25,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:25,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:21:25,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-11-12 02:21:25,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2049, now seen corresponding path program 1 times [2023-11-12 02:21:25,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:25,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951901855] [2023-11-12 02:21:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:25,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:25,962 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 02:21:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:25,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951901855] [2023-11-12 02:21:25,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951901855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:25,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:25,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:21:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660014866] [2023-11-12 02:21:25,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:25,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:21:25,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:26,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:21:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:21:26,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 498 out of 1039 [2023-11-12 02:21:26,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 143 transitions, 304 flow. Second operand has 2 states, 2 states have (on average 498.5) internal successors, (997), 2 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 02:21:26,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:26,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 498 of 1039 [2023-11-12 02:21:26,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:26,718 INFO L124 PetriNetUnfolderBase]: 1338/3390 cut-off events. [2023-11-12 02:21:26,719 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-12 02:21:26,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5356 conditions, 3390 events. 1338/3390 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 26145 event pairs, 903 based on Foata normal form. 315/2996 useless extension candidates. Maximal degree in co-relation 4852. Up to 1844 conditions per place. [2023-11-12 02:21:26,756 INFO L140 encePairwiseOnDemand]: 993/1039 looper letters, 38 selfloop transitions, 0 changer transitions 1/97 dead transitions. [2023-11-12 02:21:26,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 290 flow [2023-11-12 02:21:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:21:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:21:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1081 transitions. [2023-11-12 02:21:26,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202117420596728 [2023-11-12 02:21:26,778 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1081 transitions. [2023-11-12 02:21:26,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1081 transitions. [2023-11-12 02:21:26,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:26,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1081 transitions. [2023-11-12 02:21:26,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 540.5) internal successors, (1081), 2 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states 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 02:21:26,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1039.0) internal successors, (3117), 3 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states 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 02:21:26,808 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1039.0) internal successors, (3117), 3 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states 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 02:21:26,810 INFO L175 Difference]: Start difference. First operand has 141 places, 143 transitions, 304 flow. Second operand 2 states and 1081 transitions. [2023-11-12 02:21:26,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 290 flow [2023-11-12 02:21:26,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 278 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-12 02:21:26,830 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 197 flow [2023-11-12 02:21:26,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1039, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=197, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2023-11-12 02:21:26,837 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -48 predicate places. [2023-11-12 02:21:26,838 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 197 flow [2023-11-12 02:21:26,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 498.5) internal successors, (997), 2 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 02:21:26,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:26,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:26,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:21:26,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-11-12 02:21:26,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:26,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2001501762, now seen corresponding path program 1 times [2023-11-12 02:21:26,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:26,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128843876] [2023-11-12 02:21:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:26,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:27,115 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 02:21:27,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:27,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128843876] [2023-11-12 02:21:27,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128843876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:27,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:27,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:21:27,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243505447] [2023-11-12 02:21:27,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:27,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:27,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 476 out of 1039 [2023-11-12 02:21:27,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 478.6666666666667) internal successors, (1436), 3 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states 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 02:21:27,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:27,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 476 of 1039 [2023-11-12 02:21:27,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:27,893 INFO L124 PetriNetUnfolderBase]: 2112/4780 cut-off events. [2023-11-12 02:21:27,893 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-12 02:21:27,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7752 conditions, 4780 events. 2112/4780 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 35189 event pairs, 1517 based on Foata normal form. 0/3796 useless extension candidates. Maximal degree in co-relation 7749. Up to 2908 conditions per place. [2023-11-12 02:21:27,938 INFO L140 encePairwiseOnDemand]: 1035/1039 looper letters, 40 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-11-12 02:21:27,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 273 flow [2023-11-12 02:21:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1472 transitions. [2023-11-12 02:21:27,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47224895733076677 [2023-11-12 02:21:27,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1472 transitions. [2023-11-12 02:21:27,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1472 transitions. [2023-11-12 02:21:27,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:27,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1472 transitions. [2023-11-12 02:21:27,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 490.6666666666667) internal successors, (1472), 3 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 02:21:27,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1039.0) internal successors, (4156), 4 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states 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 02:21:27,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1039.0) internal successors, (4156), 4 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states 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 02:21:27,966 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 197 flow. Second operand 3 states and 1472 transitions. [2023-11-12 02:21:27,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 273 flow [2023-11-12 02:21:27,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:21:27,970 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 193 flow [2023-11-12 02:21:27,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1039, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2023-11-12 02:21:27,972 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -50 predicate places. [2023-11-12 02:21:27,972 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 193 flow [2023-11-12 02:21:27,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 478.6666666666667) internal successors, (1436), 3 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states 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 02:21:27,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:27,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:27,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:21:27,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-11-12 02:21:27,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash 702458600, now seen corresponding path program 1 times [2023-11-12 02:21:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:27,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229114299] [2023-11-12 02:21:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:28,080 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 02:21:28,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:28,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229114299] [2023-11-12 02:21:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229114299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:28,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:28,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:21:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509165102] [2023-11-12 02:21:28,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:28,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:28,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:28,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:28,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 485 out of 1039 [2023-11-12 02:21:28,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 02:21:28,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:28,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 485 of 1039 [2023-11-12 02:21:28,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:28,803 INFO L124 PetriNetUnfolderBase]: 1716/4129 cut-off events. [2023-11-12 02:21:28,803 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-12 02:21:28,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6565 conditions, 4129 events. 1716/4129 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 32018 event pairs, 1197 based on Foata normal form. 0/3428 useless extension candidates. Maximal degree in co-relation 6561. Up to 2364 conditions per place. [2023-11-12 02:21:28,840 INFO L140 encePairwiseOnDemand]: 1036/1039 looper letters, 40 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-11-12 02:21:28,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 271 flow [2023-11-12 02:21:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:28,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:28,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1498 transitions. [2023-11-12 02:21:28,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48059031119666346 [2023-11-12 02:21:28,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1498 transitions. [2023-11-12 02:21:28,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1498 transitions. [2023-11-12 02:21:28,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:28,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1498 transitions. [2023-11-12 02:21:28,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 499.3333333333333) internal successors, (1498), 3 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states 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 02:21:28,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1039.0) internal successors, (4156), 4 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states 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 02:21:28,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1039.0) internal successors, (4156), 4 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states 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 02:21:28,868 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 193 flow. Second operand 3 states and 1498 transitions. [2023-11-12 02:21:28,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 271 flow [2023-11-12 02:21:28,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:21:28,871 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 190 flow [2023-11-12 02:21:28,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1039, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2023-11-12 02:21:28,873 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -51 predicate places. [2023-11-12 02:21:28,873 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 190 flow [2023-11-12 02:21:28,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 02:21:28,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:28,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:28,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:21:28,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-11-12 02:21:28,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1040937989, now seen corresponding path program 1 times [2023-11-12 02:21:28,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:28,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150848445] [2023-11-12 02:21:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:28,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:29,110 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 02:21:29,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:29,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150848445] [2023-11-12 02:21:29,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150848445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:29,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:29,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:21:29,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713750437] [2023-11-12 02:21:29,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:29,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:29,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:29,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:29,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:29,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 1039 [2023-11-12 02:21:29,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states 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 02:21:29,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:29,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 1039 [2023-11-12 02:21:29,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:29,859 INFO L124 PetriNetUnfolderBase]: 1338/3296 cut-off events. [2023-11-12 02:21:29,859 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-12 02:21:29,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5191 conditions, 3296 events. 1338/3296 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 24800 event pairs, 903 based on Foata normal form. 0/2616 useless extension candidates. Maximal degree in co-relation 5187. Up to 1843 conditions per place. [2023-11-12 02:21:29,893 INFO L140 encePairwiseOnDemand]: 1036/1039 looper letters, 37 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-11-12 02:21:29,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 270 flow [2023-11-12 02:21:29,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:29,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:29,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1480 transitions. [2023-11-12 02:21:29,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748155277510427 [2023-11-12 02:21:29,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1480 transitions. [2023-11-12 02:21:29,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1480 transitions. [2023-11-12 02:21:29,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:29,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1480 transitions. [2023-11-12 02:21:29,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 493.3333333333333) internal successors, (1480), 3 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 02:21:29,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1039.0) internal successors, (4156), 4 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states 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 02:21:29,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1039.0) internal successors, (4156), 4 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states 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 02:21:29,919 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 190 flow. Second operand 3 states and 1480 transitions. [2023-11-12 02:21:29,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 270 flow [2023-11-12 02:21:29,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:21:29,922 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 201 flow [2023-11-12 02:21:29,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1039, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2023-11-12 02:21:29,926 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -49 predicate places. [2023-11-12 02:21:29,927 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 201 flow [2023-11-12 02:21:29,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states 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 02:21:29,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:29,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:29,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:21:29,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-11-12 02:21:29,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:29,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1118156125, now seen corresponding path program 1 times [2023-11-12 02:21:29,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:29,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548333938] [2023-11-12 02:21:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:29,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:30,151 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 02:21:30,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:30,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548333938] [2023-11-12 02:21:30,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548333938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:30,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:30,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:21:30,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829603771] [2023-11-12 02:21:30,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:30,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:21:30,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:21:30,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:21:30,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 1039 [2023-11-12 02:21:30,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 480.75) internal successors, (1923), 4 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states 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 02:21:30,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:30,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 1039 [2023-11-12 02:21:30,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:30,942 INFO L124 PetriNetUnfolderBase]: 1338/3298 cut-off events. [2023-11-12 02:21:30,942 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-12 02:21:30,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 3298 events. 1338/3298 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 24764 event pairs, 903 based on Foata normal form. 0/2617 useless extension candidates. Maximal degree in co-relation 5196. Up to 1842 conditions per place. [2023-11-12 02:21:30,966 INFO L140 encePairwiseOnDemand]: 1032/1039 looper letters, 35 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2023-11-12 02:21:30,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 287 flow [2023-11-12 02:21:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:21:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:21:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1955 transitions. [2023-11-12 02:21:30,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4704042348411935 [2023-11-12 02:21:30,975 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1955 transitions. [2023-11-12 02:21:30,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1955 transitions. [2023-11-12 02:21:30,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:30,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1955 transitions. [2023-11-12 02:21:30,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 488.75) internal successors, (1955), 4 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states 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 02:21:30,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1039.0) internal successors, (5195), 5 states have internal predecessors, (5195), 0 states have call successors, (0), 0 states 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 02:21:30,999 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1039.0) internal successors, (5195), 5 states have internal predecessors, (5195), 0 states have call successors, (0), 0 states 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 02:21:30,999 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 201 flow. Second operand 4 states and 1955 transitions. [2023-11-12 02:21:31,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 287 flow [2023-11-12 02:21:31,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 283 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:21:31,003 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 225 flow [2023-11-12 02:21:31,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1039, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2023-11-12 02:21:31,004 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -46 predicate places. [2023-11-12 02:21:31,005 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 225 flow [2023-11-12 02:21:31,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 480.75) internal successors, (1923), 4 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states 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 02:21:31,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:31,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:31,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:21:31,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-11-12 02:21:31,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:31,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1495183492, now seen corresponding path program 1 times [2023-11-12 02:21:31,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:31,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129985249] [2023-11-12 02:21:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:31,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:21:31,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:31,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129985249] [2023-11-12 02:21:31,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129985249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:31,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:31,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:21:31,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229332189] [2023-11-12 02:21:31,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:31,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:21:31,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:31,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:21:31,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:21:32,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 476 out of 1039 [2023-11-12 02:21:32,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 479.0) internal successors, (2874), 6 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states 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 02:21:32,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:32,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 476 of 1039 [2023-11-12 02:21:32,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:35,011 INFO L124 PetriNetUnfolderBase]: 7133/12119 cut-off events. [2023-11-12 02:21:35,011 INFO L125 PetriNetUnfolderBase]: For 25/39 co-relation queries the response was YES. [2023-11-12 02:21:35,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21578 conditions, 12119 events. 7133/12119 cut-off events. For 25/39 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 86683 event pairs, 2323 based on Foata normal form. 4/9216 useless extension candidates. Maximal degree in co-relation 21572. Up to 5361 conditions per place. [2023-11-12 02:21:35,104 INFO L140 encePairwiseOnDemand]: 1032/1039 looper letters, 130 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2023-11-12 02:21:35,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 186 transitions, 689 flow [2023-11-12 02:21:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:21:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:21:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2993 transitions. [2023-11-12 02:21:35,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801090792428617 [2023-11-12 02:21:35,118 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2993 transitions. [2023-11-12 02:21:35,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2993 transitions. [2023-11-12 02:21:35,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:35,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2993 transitions. [2023-11-12 02:21:35,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 498.8333333333333) internal successors, (2993), 6 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states 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 02:21:35,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1039.0) internal successors, (7273), 7 states have internal predecessors, (7273), 0 states have call successors, (0), 0 states 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 02:21:35,157 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1039.0) internal successors, (7273), 7 states have internal predecessors, (7273), 0 states have call successors, (0), 0 states 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 02:21:35,166 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 225 flow. Second operand 6 states and 2993 transitions. [2023-11-12 02:21:35,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 186 transitions, 689 flow [2023-11-12 02:21:35,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 186 transitions, 688 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:21:35,171 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 288 flow [2023-11-12 02:21:35,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1039, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2023-11-12 02:21:35,173 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -37 predicate places. [2023-11-12 02:21:35,174 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 288 flow [2023-11-12 02:21:35,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 479.0) internal successors, (2874), 6 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states 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 02:21:35,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:35,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:35,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:21:35,182 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-11-12 02:21:35,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1576884085, now seen corresponding path program 1 times [2023-11-12 02:21:35,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:35,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275946549] [2023-11-12 02:21:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:35,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:21:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275946549] [2023-11-12 02:21:35,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275946549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:21:35,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100650455] [2023-11-12 02:21:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:35,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:21:35,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:21:35,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:21:35,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:21:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:35,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:21:35,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:21:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:21:35,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:21:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:21:35,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100650455] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:21:35,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:21:35,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-12 02:21:35,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647469825] [2023-11-12 02:21:35,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:21:35,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:21:35,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:35,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:21:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:21:36,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 1039 [2023-11-12 02:21:36,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 468.75) internal successors, (5625), 12 states have internal predecessors, (5625), 0 states have call successors, (0), 0 states 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 02:21:36,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:36,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 1039 [2023-11-12 02:21:36,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:38,891 INFO L124 PetriNetUnfolderBase]: 4356/9346 cut-off events. [2023-11-12 02:21:38,891 INFO L125 PetriNetUnfolderBase]: For 1476/1569 co-relation queries the response was YES. [2023-11-12 02:21:38,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16980 conditions, 9346 events. 4356/9346 cut-off events. For 1476/1569 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 78778 event pairs, 2382 based on Foata normal form. 3/7294 useless extension candidates. Maximal degree in co-relation 16970. Up to 4496 conditions per place. [2023-11-12 02:21:38,977 INFO L140 encePairwiseOnDemand]: 1029/1039 looper letters, 84 selfloop transitions, 22 changer transitions 0/163 dead transitions. [2023-11-12 02:21:38,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 163 transitions, 708 flow [2023-11-12 02:21:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:21:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:21:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4298 transitions. [2023-11-12 02:21:38,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596299860977436 [2023-11-12 02:21:38,994 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4298 transitions. [2023-11-12 02:21:38,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4298 transitions. [2023-11-12 02:21:38,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:38,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4298 transitions. [2023-11-12 02:21:39,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 477.55555555555554) internal successors, (4298), 9 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:39,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1039.0) internal successors, (10390), 10 states have internal predecessors, (10390), 0 states have call successors, (0), 0 states 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 02:21:39,030 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1039.0) internal successors, (10390), 10 states have internal predecessors, (10390), 0 states have call successors, (0), 0 states 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 02:21:39,031 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 288 flow. Second operand 9 states and 4298 transitions. [2023-11-12 02:21:39,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 163 transitions, 708 flow [2023-11-12 02:21:39,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 163 transitions, 708 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:21:39,045 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 443 flow [2023-11-12 02:21:39,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1039, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=443, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2023-11-12 02:21:39,046 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -25 predicate places. [2023-11-12 02:21:39,046 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 443 flow [2023-11-12 02:21:39,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 468.75) internal successors, (5625), 12 states have internal predecessors, (5625), 0 states have call successors, (0), 0 states 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 02:21:39,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:39,048 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:39,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476f445b-fe22-46c0-b67c-3891637cdcbc/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0